VM ZINC®: Standing Seam Guidelines for Specification and Installation

VM ZINC®: standing seam Guidelines for specification and installation

Junglim Architecture - QUARTZ-ZINC®

Roofing and cladding system in VM ZINC®

Roofs from a 3° pitch and facades

Freedom with shape and appearance

A choice of “ventilated” or “warm” roofing systems

This document applies exclusively to the specification and installation of the designated products or systems on building sites in United Kingdom and the Republic of Ireland. Umicore Marketing Services U.K. Four Rivers House, Fentiman Walk Hertford, Herts, SG14 1DB

A Umicore brand Standing Seam - Contents

3 ...... VM ZINC natural and recyclable 4 ...... Surface appearances 5 ...... What is standing seam? 6 and 7 ...... Types and areas of applications

8 ...... Standing seam roofing, warm roof on mineral wool or PIR 10 ...... Fixing clips 11 to 17 ...... Examples of details: junction gutter, box gutter, verges, ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

18 ...... Standing seam roofing, warm roof on composite panels 20 ...... Fixing clips 21 to 27 ...... Examples of details: junction gutter, box gutter, verges, ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

28 ...... Standing seam roofing, warm roof on cellular glass 30 ...... Fixing clips 31 to 37 ...... Examples of details: junction gutter, box gutter, verges, ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

38 ...... Standing seam roofing, ventilated roof on incompatible support 40 ...... Fixing clips 41 to 47 ...... Examples of details: junction gutter, box gutter, verges, ventilated ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

48 ...... Standing seam roofing, ventilated roof on roof boarding 50 ...... Fixing clips 51 to 57 ...... Examples of details: junction gutter, box gutter, verges, ventilated ridge/hip, valley detail, mansard, junction skylight and junction with chimmey

58 ...... Standing seam roofing, example very low pitch 59 ...... Standing seam roofing, specific applications

60 to 62 ...... Standing seam facade, ventilated cladding, horizontal panels installed on boarding 63 to 65 ...... Standing seam facade, ventilated cladding, vertical panels installed on boarding

Standing seam - System installation 66 ...... Expansion of VM ZINC® - layout 67 ...... Measuring for and ordering profiled panels - maximum length of panels 68 ...... Transportation, storage, installing and working VM ZINC® 69 ...... Preparation and fixing of the top of the panels 3 stage installation of the panels 69 ...... 1. Laying the panel on the structure 70 ...... 2. Installation of clips 71 ...... 3. Preparation of the panels for crimping 72 to 73 ...... Crimping

74 ...... Standing seam facade - Installation of the system

75 ...... Removing the protective film and moving around on the VM ZINC®

76 ...... Appendix 1 - Junctions at the foot of the pitch 77 ...... Appendix 2 - Verge flashing 78 ...... Appendix 3 and 4 - Flashings and forbidden contacts 79 ...... Appendix 5 - Ventilation of VM ZINC® roofing and cladding 80 to 81 ...... Appendix 6 - Compatibility of VM ZINC® with wood, wood derivates, glues and mastics

2 VM ZINC® - natural and recyclable

VM ZINC®

• is the brand name of rolled zinc products, transformed, produced and sold by Umicore. • conforms to the EN 988. • is a 99.995% electrolytic zinc, to which very small quantities of copper and titanium are added.

Physical properties of VM ZINC®

Density: 7.18+ 0.02 g/cm3. Linear expansion: 0.022 mm per m and per °C in the direction of rolling.

Recyclable Zinc is 100% recyclable. More than 90% of the zinc used in the building industry is recycled. Less energy is required to produce it than the other principal metals. The energy balance is even more favourable in recycled zinc. This excellent result clearly proves the contribution of VM ZINC® to sustainable developement.

MJ/kg 250 203(3)

200 105(3)

150

100 50(1) 43

50 18 12(2)

0 ZINC COPPER ALUMINIUM

From ore to metalFrom recycled material to metal

3 VM ZINC® surface appearances

VM ZINC®: a wide variety of surface appearances

® Natural VM ZINC ANTHRA-ZINC® The coating and pigments has a shiny metallic appearance when Its name reflects the charcoal colour, do not in any way alter the new and develops a patina naturally offering many combination possibilities. environmental properties of ® over time. ANTHRA-ZINC is covered on both sides pre-weathered VM ZINC®. Thus it gradually takes on a uniform matt with a surface treatment with anti- Moreover, the coating does not grey appearance. corrosion agents. contain chromate development. ® QUARTZ-ZINC® ANTHRA-ZINC lends itself to highly offers an appearance and texture close structured architecture. Bilacquered VM ZINC® to the patina developed by natural ® 6 colours are available: stone VM ZINC®. PIGMENTO white, sky blue, copper green, The grey tones of QUARTZ-ZINC® and The PIGMENTO® range is based on QUARTZ- autumn brown, slate grey and its structural flexibility bring out the ZINC® to which mineral pigments are Macao brown. For non standard character of a building from the outset. added. 3 colours are available: PIGMENTO® colours, please contact us. Appreciated for refurbishment, its blue, red and green. This coloured finish natural-looking colour blends well with preserves the naturally grained texture of existing construction materials. pre-weathered zinc.

ANTHRA-ZINC® PIGMENTO® green PIGMENTO® red PIGMENTO® blue QUARTZ-ZINC®

4 Introduction What is standing seam?

® ®

> Arch. G. Wastiau- QUARTZ-ZINC & bilacquered VM ZINC

The standing seam system, which developed from roll cap:

• is a roof and facade covering system ® Thus the fixing clips for panels What is VM ZINC PLUS? • can be installed from a 3° pitch. and flashings never penetrate VM ZINC “PLUS®“ is exactly the same • can be laid in lengths upto 13 m the material and therefore do pure high quality material as standard without the need for expansion steps. not damage the appearance or VM ZINC®. It, has a 60 micron thick • can be used for ventilated or warm waterproofing. organic coating to its underside roofing. • adapts to the simplest or the most VM ZINC “PLUS®“ is the future of complex roof shapes. The low height of the seams (25 mm Zinc in Architecture. This allows it to • can be used to cover soffits (box standard) and the 600 mm spacing be installed over non ventilated & gutter overhangs, etc). between joints give the roof a light, harmonious appearance. potentially non compatible substrates. Generally speaking, the profiled panels are held in place at the top Moreover, any non-standard width of the pitch by fixed clips and on the between 60 and 600 mm can be sides by sliding clips distributed along produced. the length of the panel. These clips, Standing seam roofs or cladding should which are fixed to the structure, are only be installed by properly trained and crimped inside the joints. equipped professionals.

Umicore organises practical training courses on the installation of VM ZINC® standing seam: • Reserved for roofing professionals. • Organised in a covered, specially equipped training centre.

: www.vmzinc.co.uk : www.vmzinc.ie ( 01992 822288.

5 Standing Seam Types of application

Warm roof:

VM ZINC® roofing is fixed directly on the insulating material. The underside of the metal is unventilated and therefore the use of VM ZINC® PLUS with an already protected underside is obligatory.

VM ZINC® PLUS on mineral wool VM ZINC® PLUS on composite panels VM ZINC® PLUS on cellular glass or PIR • Very competitive price • Very competitive price • Non - penetrating fastening • Classes of internal humidity load: • Classes of internal humidity load: • Classes of internal humidity load: 1 to 4 1 to 4 1 to 5

Ventilated roof on roof boarding: Ventilated roof on incompatible support: VM ZINC® roof with ventilated underside. This ventilation In this application the underside of the metal is

® consists of an air space where the C02 in the air allows unventilated and therefore the use of VM ZINC PLUS the VM ZINC® to develop a natural patina on the underside. with an already protected underside is obligatory. This ventilated air space, with openings at the bottom and top of the roof is absolutely necessary to guarantee the durability of VM ZINC® (cf appendix 5 page 79).

• Easy installation • Very competitive price • Can be used to cover complex shapes • Classes of internal humidity load: • Classes of internal humidity load: 1 to 4 1 to 4

6 Standing Seam Areas of application

Classes of Internal Application Shape Type of Humidity Load (Nb1) Pitch standing seam Page Low Moderate High roof Roof Facade Straight Curved Complex 1 2 - 3 - 4 5

Warm roof on 8 from 3° to 45° Nb2 cellular glass P - PPP PP

Warm roof on 18 from 3° to 60° composite panels P - PP - P -- Warm roof on mineral wool 28 from 3° to 60° Nb2 or PIR P - PP - PP Ventilated roof on from 3° to 38 roof boarding PPPP - vertical PPP

Ventilated roof on from 3° to incompatible 48 support PPPP - vertical PPP

> Nb1: Further details: please consult BS 5250:2002 & EN 13788:2001.

> Nb2: Please consult our technical department.

What is VM ZINC® PLUS?

VM ZINC® PLUS is VM ZINC® coated on the underside with a protective layer (Umicore patent).

1. Surface appearances available: Natural VM ZINC® PLUS, QUARTZ-ZINC® PLUS and ANTHRA-ZINC® PLUS.

2. Used for « warm » applications or on incompatible structure.

3. No need to ventilate the underside of VM ZINC® PLUS.

7 Standing Seam - Roofing Warm roof on mineral wool or PIR

5 4

1 2

Composition of roof

1 Interior finish

2 Support structure (e.g. steel deck)

3 Vapour control layer

4 Insulation

5 Breather membrane

® 6 VM ZINC PLUS standing seam

8 Installation of this system see pages 66 to 79 > Arch. L3M - QUARTZ-ZINC® PLUS Characteristics of this technique The insulation material has to comply with national regulation (i.e. fire With this warm roof system VM ZINC® resistance). PLUS standing seam can be installed on • Between the VM ZINC® PLUS and the mineral wool or PIR insulation without insulation, a breather membrane is ventilating the underside of the VM ZINC® fixed with an overlap of ± 150 mm. PLUS. Penetrating fixing elements can be used N.B. The information relating to the with the help of plates, joists or special installation of insulation and membranes fixing clips supplied by Umicore. is simply an indication. Structure The choice and installation of these products will be according to the A choice of: recommendations of the insulation and • Steel deck membrane manufacturers. • Timber deck.

Area of application This structure is successively covered by: • A vapour control layer with a high • Roofs with a pitch from 3° to 60°. water vapour resistance installed with • Classes of internal humidity load: Specifications: cold or hot glued joints. 1 to 4. : See www.vmzinc.co.uk • Insulation: either mineral wool or : See www.vmzinc.ie VM ZINC®, the choices some types of PIR. all insulation materials have to resist a compression Only “PLUS” type VM ZINC® with a strenght of minimum 50kPa specially protected underside: (0.5kg/cm2), at a maximum 10% • Natural VM ZINC® PLUS, QUARTZ-ZINC® deformation. PLUS or ANTHRA-ZINC®PLUS. • 0.7 mm thick.

9 Standing Seam - Roofing Warm roof on mineral wool or PIR

Fixing clips to be used

code fig. description material qty/box

220002860 1 sliding clip stainless steel 250 1

220002861 2 distribution plate stainless steel 250 2

3 205709000 3 fixed clip Stainless steel 100

4 4 spacer

Fixing the clips

Only with screws of a diameter, length and type appropriate to the structure.

Information on the spacers (for fixed clips): In order to avoid crushing the insulation, a spacer with the same height as the insulation is placed between the breather membrane and the structure. The fixing screw goes into the hole in this spacer.

10 Examples of details

The solutions presented here are simply examples and are not the only ones possible. Our technical assistance department is available to study other solutions with you.

Gutter

L = Flashing length - see page 76 1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 3. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 4. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 5. loadbearing structure 6. continuous sheet strip in VM ZINC® PLUS, th = 0.7 mm 7. flashing in VM ZINC® PLUS 8. PLULINE® gutter bracket 9. PLULINE® gutter 10. rafter, 5 mm thinner than the insulation 11. breather membrane -When rendering a wall it is 12. vapour control layer recommended to protect the VM ZINC®. 13. insulation mineral wool or PIR - In some cases it is recommended to provide snow guards.

Box gutter (gutter outside the wall) Variation

pitch min. 1° L = Flashing length - see page 76 1. standing seam in VM ZINC® PLUS 2. continuous strip in VM ZINC®, th = 0.8 mm 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. continuous double welt strip in VM ZINC® PLUS, continuously soldered

® pitch min. 1° 5. bracket in VM ZINC , th = 1 mm, w = 250 mm, 2 per m 6. rafter, 5 mm thinner than the insulation 7. roof boarding 8. box gutter in VM ZINC® 9. ventilated space 10. packers fixed to gutter fall 11. fascia with welted panels in VM ZINC®, dimensions maximum for each panels: 400 x 2000 mm 12. breather membrane 13. vapour control layer 14. insulation mineral wool or PIR 15. continuous welt piece in VM ZINC® 16. mesh (2 mm maximum weave)

- In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended Variation to protect the VM ZINC®.

11 Standing Seam - Roofing Warm roof on mineral wool or PIR

Box gutter (gutter inside or on the L = Flashing length - see page 76 wall)

1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS pitch min. 1° 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. folded clip in VM ZINC® PLUS, th = 0.7 mm, continuous

® with flat folded clip 5. continuous sheet strip in VM ZINC PLUS, th = 0.7 mm pitch min. 1° 6. rafter, 5 mm thinner than the insulation 7. roof boarding 8. box gutter in VM ZINC® PLUS 9. bracket in VM ZINC® PLUS, th = 0.7 mm, continuous 10. vapour control layer 11. insulation mineral wool or PIR 12. breather membrane

with rolled bead

- In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended to protect the VM ZINC®.

For curved roof The mimimum pitch at the ridge must be at least 3° over first metre

Wall abutment head

® slope min. 3° 1. standing seam in VM ZINC PLUS 2. head saddle piece in VM ZINC® 3. breather membrane 4. vapour control layer 5. insulation mineral wool or PIR 6. roof boarding 7. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. continuous capping piece in VM ZINC® PLUS 9. wall 10. mastic sealant, compatible with VM ZINC® 11. fixing wedge

12 For curved roof The minimum pitch at the ridge must be at least 3° over the first metre.

Ridge

1. standing seam in VM ZINC® PLUS pitch min. 2. saddle piece in VM ZINC® 3. ridge piece in VM ZINC® PLUS, th = 0.7 mm 4. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 5. rafter 6. breather membrane 7. vapour control layer 8. insulation mineral wool or PIR

Roof abutment

1. standing seam in VM ZINC® PLUS 2. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 3. VM ZINC® PLUS stepped flashings chased into the wall 4. mastic sealant, compatible with VM ZINC® 5. breather membrane 6. vapour control layer 7. insulation mineral wool or PIR 8. fixing wedge

13 Standing Seam - Roofing Warm roof on mineral wool or PIR

Verge

1. standing seam in VM ZINC® PLUS 2. insulation mineral wool or PIR 3. sliding clip VM ZINC® in stainless steel, (manually adapted/tranformed) 4. fascia in VM ZINC® PLUS 5. continuous edge flashing in VM ZINC® PLUS 6. wall 7. breather membrane 8. vapour control layer

Valley detail (to be used for roof pitches in excess of 14°)

1. standing seam in VM ZINC® PLUS 2. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 3. continuous double welt strip in VM ZINC®, continuously soldered R = overlap - see page 76

4. water flow controler* 5. breather membrane 6. vapour control layer 7. insulation mineral wool or PIR 8. valley gutter in VM ZINC® PLUS 9. screw, 20 mm longer than the thickness of the isulation 4* In some conditions a water flow controler can be necessary.

In some cases it is recommended to provide snow guards.

14 Box valley gutter

L = Flashing length - see page 76

1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 5. overflow 6. rafter, 5 mm thinner than the insulation 7. heating cables (if required) 8. box gutter in VM ZINC® PLUS 9. breather membrane 10. insulation mineral wool or PIR 11. vapour control layer - In some cases it is recommended to provide snow guards.

Hip

1. standing seam in VM ZINC® PLUS 2. saddle piece in VM ZINC® 3. hip piece in VM ZINC® PLUS, th = 0.7 mm 4. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 5. rafter 6. breather membrane 7. vapour control layer 8. insulation mineral wool or PIR

15 Standing Seam - Roofing Warm roof on mineral wool or PIR

L = Flashing length - see page 76 Mansard

In some cases it is recommended For a mansard pitch stronger than 60°, to provide snow guards. it’s IMPORTANT to contact the technical service of VM ZINC®.

Junctions skylight (min. pitch 14°) R = overlap - see page 76 independent flashing 1. standing seam in VM ZINC® PLUS standing seam in VM ZINC® PLUS 2. saddle piece in VM ZINC® 3. insulation mineral wool or PIR

continuous welting strip 4. skylight flashing section DD

skylight

saddle piece section AA

Overview To allow for the expansion of the VM ZINC®, we cover the chassis of the skylight with an independent flashing. The above standing seam sheets are welted to this flashing. This flashing is laterally locked in the standing seam. section BB

5. roof boarding 6. vapour control layer 7. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. continuous double welt strip in section CC VM ZINC® PLUS, continuously soldered 9. flashing in VM ZINC ® PLUS to witch the standing seam is fixed 10. water deflector piece, pitch min. 0.5° 11. breather membrane 12. screw, 20 mm longer than the thickness of the insulation 13. fold 20 mm

16 standing seam in VM ZINC® PLUS Junctions skylight (pitch above 3°)

laid seam, soldered continuously

section AA

skylight

saddle piece

Overview section BB Penetrations must not interupt more than three seams. At this level, expansion of the 1. standing seam in VM ZINC® PLUS VM ZINC® must be, towards the ridge not the eaves, = no fixed clip at the ridge. 2. saddle piece in VM ZINC® 3. vapour control layer 4. skylight flashing 5. roof boarding 6. insulation mineral wool or PIR

® section CC 7. sheet clip in VM ZINC PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. continuous double welt strip in VM ZINC® PLUS, continuously soldered 9. standing seam fold, fixed and soldered 10. breather membrane 11. water deflector piece, min. pitch 0.5° 12. fold 20 mm

Junction with chimney in stainless steel (between two seams)

1. standing seam in VM ZINC® PLUS 2. breather membrane 3. tube in VM ZINC® 4. twinwall chimney in stainless steel with insulation 5. flashing piece in stainless steel 6. mastic sealant, compatible with VM ZINC® 7. flashing collar in VM ZINC® (dot soldering) 8. insulation in mineral wool or PIR 9. vapour control layer

*: Fire space in accordance with the building regulations E: make allowances for the expansion & contraction of the VM ZINC® (depending of the temperature when applied) Note: the top of the chimney must be high enough to prevent deposit falling onto the roof. We recommend the use of an uncovered finishing cone for fuel oil heating chimneys.

17 Standing Seam - Roofing Warm roof on composite panels

2 3

Composition of roof

1 Composite panel

2 Tape / aluminium faced

3 Breather membrane

® 4 VM ZINC PLUS standing seam

18 Installation of this system see pages 66 to 79

Characteristics of this technique Particular attention to be put on certification of the upper facing of With this warm roof system VM ZINC® these panels for roofing usage. PLUS standing seam can be installed on Upper layer able to resist pull out

> composite panels without ventilating the Arch. P. Poncin - QUARTZ-ZINC® forces of 50daN/standing seam fixing underside of the VM ZINC® PLUS. clip (dynamic testing method). For all applications: • Galvanised steel internal and external 1. the substrate of the composite panels facing (min. thickness: 0.7 mm for (on the warm side of the roof panel) external facing). must be covered with a vapour control Particular attention to be put on layer material with vapour resistance certification of these panels for roofing always greater than the sum of the usage. resistance of the elements fixed above Upper layer able to resist pull out the vapour control layer. It must be forces of 50daN/standing seam fixing adapted to the internal humidity load clip (dynamic testing method). of the building.

2. the joints between the composite No delamination of the panel and panels must be totally air tight and pull out resistance decrease under have good vapour retarder properties. wet conditions. 3. breather membrane (Tyvek type 2480b or equivalent) should be Area of application installed between the VM ZINC® PLUS N.B. The information relating to the • Roofs with a pitch from 3° to 60°. and the composite panels. installation of the composite panels and • Classes of internal humidity load: This breather membrane must be membranes is simply an indication. 1 to 4. open to water vapour and completely The choice and installation of these watertight. The breather membrane VM ZINC®, the choices products will be according to the must end into the gutter. Only “PLUS” type VM ZINC® with a recommendations of the panels and specially protected underside: Structure membrane manufacturers. • Natural VM ZINC® PLUS, QUARTZ-ZINC® A choice of: PLUS or ANTHRA-ZINC®PLUS. • Upper layer of the composite panel: Specifications: • 0.7 mm thick. solide wood panels or other panels, all : See www.vmzinc.co.uk certified for roofing applications (min. : See www.vmzinc.ie thickness: 12 mm).

19 Standing Seam - Roofing Warm roof on composite panels

Fixing clips to be used

code fig. description material qty/box

1 205709000 1 Fixed clips with stainless steel 100 countersunk screw holes

2 205710000 2 Sliding clips with stainless steel 250 countersunk screw holes

Fixing the clips

Chrome coated screws of a diameter, length and type appropriate to the structure.

20 Examples of details

The solutions presented here are simply examples and not the only ones possible. Our technical assistance department is available to study other solutions with you.

Gutter

L = Flashing length - see page 76 1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 3. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 4. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 5. loadbearing structure 6. continuous sheet strip in VM ZINC® PLUS, th = 0.7 mm 7. flashing in VM ZINC® PLUS 8. PLULINE® gutter bracket 9. PLULINE® gutter 10. rafter, 5 mm thinner than the insulation 11. breather membrane 12. composite panel - In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended to protect the VM ZINC®.

Box gutter (gutter outside the wall) Variation 1. standing seam in VM ZINC® PLUS pitch min. 1° R = overlap - see page 76 2. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 3. continuous double welt strip in VM ZINC® PLUS , continuously soldered 4. rafter, 5 mm thinner than the insulation 5. roof boarding pitch min. 1° 6. box gutter in VM ZINC® 7. bracket in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 8. fascia with welted panels in VM ZINC®, dimensions maximum for each panels: 400 x 2000 mm 9. ventilated space 10. continuous welt piece in VM ZINC® 11. mesh (2 mm maximum weave) 12. packers fixed to gutter fall 13. continuous strip in VM ZINC®, th = 0.8 mm 14. composite panel 15. breather membrane

- In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended to Variation protect the VM ZINC®.

21 Standing Seam - Roofing Warm roof on composite panels

pitch min. 1° L = Flashing length - see page 76

with flat folded clip Box gutter (gutter inside or on the pitch min. 1° wall)

1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 5. continuous sheet strip in VM ZINC® PLUS, th = 0.7 mm 6. rafter, 5 mm thinner than the insulation 7. roof boarding 8. box gutter in VM ZINC® PLUS with rolled bead 9. bracket in VM ZINC® PLUS, th = 0.7 mm, - In some cases snow guards and/or heating cables continuous should be planned. 10. composite panel - When rendering a wall it is recommended to protect 11. breather membrane the VM ZINC®.

For curved roof The minimum pitch at the ridge must be at Wall abutment head least 3° over the first metre. 1. standing seam in VM ZINC® PLUS 2. head saddle piece in VM ZINC® 3. breather membrane 4. composite panel 5. mastic sealant, compatible with VM ZINC® pitch min. 3° 6. roof boarding 7. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. continuous capping piece in VM ZINC® PLUS 9. fixing wedge

22 For curved roof The minimum pitch at the ridge must be at least 3° over the first metre. Ridge

1. standing seam in VM ZINC® PLUS 2. saddle piece in VM ZINC® 3. ridge piece in VM ZINC® PLUS 4. sheet clip in VM ZINC® PLUS, th = 0.7 mm, pitch min. 3° w = 80 mm, 2 per m 5. rafter 6. breather membrane 7. composite panel

Roof abutment

23 Standing Seam - Roofing Warm roof on composite panels

Verge

1. standing seam in VM ZINC® PLUS 2. composite panel 3. sliding clip VM ZINC® in stainless steel, (manually adapted/tranformed) 4. fascia in VM ZINC® PLUS 5. continuous edge flashing in VM ZINC® PLUS 6. wall 7. breather membrane

R = overlap - see page 76

Valley detail (to be used for roof pitches in excess of 14°)

1. standing seam in VM ZINC® PLUS 2. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4* In some conditions a water flow controler can be 3. continuous double welt strip in necessary. VM ZINC® PLUS, continuously soldered 4. water flow controler* 5. breather membrane 6. composite panel 7. valley gutter in VM ZINC® PLUS

In some cases it is recommended to provide snow guards.

24 Box valley gutter

L = Flashing length - see page 76

1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 5. overflow 6. rafter, 5 mm thinner than the insulation 7. heating cables (if required) 8. box gutter in VM ZINC® PLUS 9. breather membrane 10. composite panel

- In some cases it is recommended to provide snow guards.

Hip

1. standing seam in VM ZINC® PLUS 2. saddle piece in VM ZINC® 3. ridge piece in VM ZINC® PLUS 4. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 5. rafter 6. breather membrane 7. composite panel

25 Standing Seam - Roofing Warm roof on composite panels

L = Flashing length - see page 76 Mansard

In some cases it is recommended to provide snow guards. For a mansard pitch stronger than 60°, it’s IMPORTANT to contact the technical service of VM ZINC®.

independent flashing Junctions skylight ® standing seam in VM ZINC PLUS (min. pitch 14°) R = overlap - see page 76 1. standing seam in VM ZINC® PLUS continuous welting strip 2. saddle piece in VM ZINC® 3. composite panel skylight 4. skylight flashing section DD 5. roof boarding

saddle piece

section AA Overview 6 To allow for the expansion of the VM ZINC®, we cover the chassis of the skylight with an independent flashing. The above standing seam sheets are welted to this flashing. This flashing is laterally locked in the standing seam. section BB

6. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 7. fold 20 mm 8. continuous double welt strip in section CC VM ZINC® PLUS, continuously soldered 9. flashing in VM ZINC® PLUS to witch the standing seam is fixed 10. water deflector piece, pitch min. 0.5° 11. breather membrane

26 standing seam in VM ZINC® PLUS Junctions skylight (pitch above 3°)

laid seam, soldered continuously section AA

skylight

saddle piece section BB Overview Penetrations must not interupt more than three seams. At this level, expansion of the VM ZINC® must be, towards the ridge not 1. standing seam in VM ZINC® PLUS the eaves, = no fixed clip at the ridge. 2. saddle piece in VM ZINC® 3. breather membrane 4. skylight flashing 5. roof boarding section CC 6. composite panel 7. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. double welt in VM ZINC® PLUS, continuously soldered 9. standing seam fold, fixed and soldered 10. fold 20 mm 11. water deflector piece, min. pitch 0.5°

Junction with chimney in stainless steel (between two seams)

27 Standing Seam - Roofing Warm roof on cellular glass

7 4 6 5

Composition of the roof

1 Interior finish

2 Support structure (e.g. steel deck)

3 Cellular glass

4 Galvanised steel plates

5 Bituminous membrane

6 Separation layer / 1000 guage PE film

® 7 VM ZINC PLUS standing seam

28 Installation of this system see pages 66 to 79 > Arch. S & C Molina - QUARTZ-ZINC® PLUS Characteristics of this technique

This warm roof system allows the • In order to avoid any contact between installation of VM ZINC® PLUS standing the VM ZINC® PLUS and the bituminous seam on cellular glass insulation without membrane, a transparent polyethy- penetrating fastenings. lene separation membrane is fixed with an overlap of + 150 mm. Structure • The VM ZINC® PLUS panels are fixed • Cellular glass glued to its structure. to this structure with special clips • The cellular glass is then covered with screwed into the galvanised steel a coating of bitumen. plates. • Galvanised steel plates, which the insulation manufacturer has to supply, N.B. The information relating to the are glued to the bitumen coated installation of insulation, plates and cellular glass. The plates must be membranes is simply an indication. positioned in collaboration with the The choice and installation of these Area of application VM ZINC® installer. products will be according to the • Roofs with a pitch from 3° to 45°. • A reinforced heat-sealable membrane recommendations of the insulation • Classes of internal humidity load: is then sealed by torching to the manufacturer. 1 to 5. entire surface of the insulation • On all structures compatible with without overlapping. This membrane Specifications: the installation of cellular glass (e.g. also covers the plates. wood, concrete, steel deck, according : See www.vmzinc.co.uk to the manufacturer’s specifications). : See www.vmzinc.ie • Renovation of waterproof bitumen roof (according to the cellular glass manufacturer’s specifications).

VM ZINC®, the choices

Only “PLUS” type VM ZINC® with a specially protected underside: • Natural VM ZINC® PLUS, QUARTZ-ZINC® PLUS or ANTHRA-ZINC®PLUS. • 0.7 mm thick.

29 Standing Seam - Roofing Warm roof on cellular glass

Fixing clips to be used

code fig. description material qty/box

205709000 1 stainless steel 100 Fixed clips with 1 countersunk screw holes

205710000 2 Sliding clips with stainless steel 250 countersunk screw holes

Fixing the clips

4,8 mm Philips no. 2 conical head recessed screws, with a minimum length of 16 mm, or an equivalent with the same characteristics must be used.

30 Examples of details

The solutions presented here are simply examples and not the only ones possible. Our technical assistance department is available to study other solutions with you.

Gutter

L = Flashing length - see page 76 1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC®PLUS 3. continuous folded strip in VM ZINC® PLUS, th=0.7 mm 4. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 5. loadbearing structure 6. continuous sheet strip in VM ZINC® PLUS, th = 0.7 mm 7. flashing in VM ZINC® PLUS 8. PLULINE® gutter bracket 9. PLULINE® gutter 10. rafter, 5 mm thinner than the insulation 11. PE-film 12. bituminous membrane - In some cases it is recommended to 13. cellular glass provide snow guards. - When rendering a wall it is recommended to protect the VM ZINC®.

Variation Box gutter (gutter outside the wall) pitch min. 1° R = overlap - see page 76 1. standing seam in VM ZINC® PLUS 2. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 3. continuous double welt strip in VM ZINC®, soldered 4. rafter, 5 mm thinner than the insulation pitch min. 1° 5. roof boarding 6. box gutter in VM ZINC® 7. bracket in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 8. fascia with welted panels in VM ZINC®, dimensions maximum for each panel: 400 x 2000 mm 9. ventilated space 10. continuous welt piece in VM ZINC® 11. mesh (2 mm maximum weave) 12. packers fixed to gutter fall 13. continuous strip in VM ZINC®, th = 0.8 mm 14. cellular glass 15. bituminous membrane 16. PE-film

- In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended to Variation protect the VM ZINC®.

31 Standing Seam - Roofing Warm roof on cellular glass

Box gutter (gutter inside or on the L = Flashing length - see page 76 wall)

with flat folded clip

pitch min. 1°

1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, pitch min. 1° w = 80 mm, 2 per m 4. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 5. continuous sheet strip in VM ZINC® PLUS, th = 0.7 mm 6. rafter, 5 mm thinner than the insulation 7. roof boarding 8. box gutter in VM ZINC® PLUS 9. bracket in VM ZINC® PLUS, th = 0.7 mm, continuous 10. bituminous membrane with rolled bead 11. PE-film 12. cellular glass

- In some cases snow guards and/or heating cables should be planned. - When rendering a wall it is recommended to protect the VM ZINC®.

For curved roof The minimum pitch at the ridge must be at least 3° over the first metre. Wall abutment head

1. standing seam in VM ZINC® PLUS 2. head saddle piece in VM ZINC® 3. PE-film 4. bituminous membrane pitch min. 3° 5. cellular glass 6. roof boarding 7. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. continuous capping piece in VM ZINC® PLUS 9. fixing wedge 10. mastic sealant, compatible with VM ZINC®

- When rendering a wall it is recommended to protect the VM ZINC®.

32 For curved roof The minimum pitch at the ridge must be at Ridge least 3° over the first metre. 1. standing seam in VM ZINC® PLUS 2. saddle piece in VM ZINC® 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. ridge piece in VM ZINC® PLUS, th = 0.7 mm pitch min. 5. rafter 6. PE-film 7. bituminous membrane 8. cellular glass

Roof abutment

1. standing seam in VM ZINC® PLUS 2. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 3. VM ZINC® PLUS stepped flashings chased into the wall 4. mastic sealant, compatible with VM ZINC® 5. PE-film 6. bituminous membrane 7. cellular glass 8. fixing plate in galvanised steel 9. fixing wedge

- When rendering a wall it is recommended to protect the VM ZINC®.

33 Standing Seam - Roofing Warm roof on cellular glass

Verge

1. standing seam in VM ZINC® PLUS 2. cellular glass 3. sliding clip VM ZINC® in stainless steel, (manually adapted/tranformed) 4. fascia in VM ZINC® PLUS 5. continuous edge flashing in VM ZINC® PLUS 6. wall 7. PE-film 8. bituminous membrane 9. fixing plate in galvanised steel

- When rendering a wall it is recommended to protect the VM ZINC®.

Valley detail (to be used for roof pitches of minimum 14°)

1. standing seam in VM ZINC® PLUS 2. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 3. continuous double welt strip in VM ZINC® , soldered 4. water flow controler*

R = overlap - see page 76

5. PE-film 6. bituminous membrane 7. cellular glass 8. valley gutter in VM ZINC® PLUS 9. fixing plate in galvanised steel

4* In some conditions a water flow controler can be necessary. In some cases it is recommended to provide snow guards.

34 Box valley gutter

L = Flashing length - see page 76

1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 5. overflow 6. rafter, 5 mm thinner than the insulation 7. heating cables (if required) 8. box gutter in VM ZINC® PLUS 9. PE-film 10. bituminous membrane 11. cellular glass

- In some cases it is recommended to provide snow guards.

Hip

1. standing seam in VM ZINC® PLUS 2. saddle piece in VM ZINC® 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. ridge piece in VM ZINC® PLUS, th = 0.7 mm 5. rafter 6. PE-film 7. bituminous membrane 8. cellular glass

35 Standing Seam - Roofing Warm roof on cellular glass

L = Flashing length - see page 76 Mansard

1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. folded clip in VM ZINC® PLUS, th = 0.7 mm, continuous 5. cellular glass 6. fixing plate in galvanised steel 7. PE-film 8. bituminous membrane

In some cases it is recommended to For a mansard pitch stronger than 45°, it’s provide snow guards. IMPORTANT to contact the technical service of VM ZINC®.

Junctions skylight (min. pitch 14°) independent flashing

standing seam in VM ZINC® PLUS 1. standing seam in VM ZINC® PLUS

® R = overlap - see page 76 2. saddle piece in VM ZINC 3. cellular glass continuous welting strip 4. skylight flashing 5. roof boarding

skylight section DD

saddle piece

Overview To allow for the expansion of the VM ZINC®, section AA we cover the chassis of the skylight with an independent flashing. The above standing seam sheets are welted to this flashing. This flashing is laterally locked in the standing seam.

section BB

6. bituminous membrane 7. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. continuous double welt strip in VM ZINC® section CC PLUS, continuously soldered 9. flashing to witch the standing seam is fixed 10. water deflector piece, pitch min. 0.5° 11. PE-film 12. fixing plate in galvanised steel 13. fold 20 mm

36 standing seam in VM ZINC® PLUS Junctions skylight (pitch above 3°)

laid seam, soldered continuously section AA

skylight

saddle piece section BB Overview Penetrations must not interupt more than three seams. At this level, expansion of the VM ZINC® 1. standing seam in VM ZINC® PLUS must be, towards the ridge not the eaves, 2. saddle piece in VM ZINC® = no fixed clip at the ridge. 3. bituminous membrane 4. skylight flashing 5. roof boarding 6. cellular glass section CC 7. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. continuous double welt strip in VM ZINC® , soldered 9. standing seam fold, fixed and soldered 10. PE-film 11. water deflector piece, min. pitch 0.5° 12. fixing plate in galvanised steel 13. fold 20 mm

Junction with chimney in stainless steel (between two seams)

1. standing seam in VM ZINC® PLUS 2. PE-film 3. tube in VM ZINC® 4. twinwall chimney in stainless steel with insulation 5. flashing piece in stainless steel 6. mastic sealant, compatible with VM ZINC® 7. flashing collar in VM ZINC® (dot soldering) 8. cellular glass 9. bituminous membrane

37 Standing Seam - Roofing Ventilated roof on incompatible support

7 5 6 3 4

Composition of the roof

1 Interior finish

2 Vapour control layer

3 Insulation

4 Breather membrane

5 Ventilated air space

6 Rafter

7 Incompatible support

8 VM ZINC® PLUS Standing seam

38 Installation of this system see pages 66 to 79 > Arch. - QUARTZ-ZINC® PLUS Characteristics of this technique of 50 daN per standing seam fixing clip). This resistance needs • VM ZINC® PLUS is installed on the to be guaranteed even through incompatible support (plywood or panels). ageing of the system and humidity • A 40 mm* continuous air gap must be circumstances through the roof left clear beneath the support of the structure VM ZINC® PLUS, on all the roof pitches. • Maximum difference in height of • Continuous ventilation openings are 1 mm between support elements of made at the top and bottom. the VM ZINC® PLUS. The deflection • In order to keep the integrity of the measured under a rigid 600 mm long roof, it is recommended to install a straight edge cannot exceed 2 mm in breather membrane on the cold side all directions. of the insulation and a vapour control • The nails/screws are countersunk in order to avoid any contact with the Areas of application layer adapted to the internal humidity load of the building, on the warm side VM ZINC® PLUS. • Roofs with a pitch from 3° to vertical. of the insulation. • Classes of internal humidity load: 1 to 4. Possible substrates

• Both renovation and new buildings. • Plywood panels that are not compatible with VM ZINC® must be VM ZINC®, the choices certified for roofing application and at ® Only “PLUS” type VM ZINC with a least 18 mm thick. Specifications: specially protected underside: • All the substrates must be flat, ® ® : See www.vmzinc.co.uk • Natural VM ZINC PLUS, QUARTZ-ZINC dry, and sufficiently resistant to ® : See www.vmzinc.ie PLUS or ANTHRA-ZINC PLUS. all the stresses to which they will • PIGMENTO & PIGMENTO Plus. be submitted (e.g. pull out force

• 0.7 mm thick. Arch. Lord Aeck Sargent Architecture - ANTHRA-ZINC® PLUS >

39 Standing Seam - Roofing Ventilated roof on incompatible support

Fixing clips to be used

code fig. description material qty/box

205709000 1 Stainless steel 100 Fixed clips with countersunk screw holes 1

205710000 2 Sliding clips with Stainnless steel 250 countersunk screw holes 2

Fixing the clips

Chrome coated screws of a diameter, length and type appropriate to the structure.

40 Examples of details

The solutions presented here are simply examples and are not the only possibilities. Our technical assistance department is available to study other alternatives with you.

L = Flashing length - see page 76 Gutter

1. standing seam in VM ZINC® PLUS 2. Sheet clip in vm zinc® plus th= 0.7 mm , l=80 mm, 2 per m 3 continuous eaves apron strip in VM ZINC ® PLUS 4. plywood, 5 mm thinner than adjacent 5. plywood 6. ventilated space 7. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 8. flashing in VM ZINC® PLUS 9. continuous sheet strip in VM ZINC®plus, th = 0.7 mm 10. PLULINE® gutter bracket 11. PLULINE® gutter 12. breather membrane 13. mesh (2 mm max. weave) - In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended to protect the VM ZINC®.

R=overlap page 76 pitch 1° Box gutter (gutter outside the wall) 1. standing seam in VM ZINC® 2. sheet clip in VM ZINC®, th = 0.7 mm, w = 80 mm, 2 per m 3. continuous welting strip in VM ZINC®, soldered 4. plywood, 5 mm thinner than adjacent pitch 1° 5. plywood 6. boxed gutter in VM ZINC® PLUS 7. bracket in VM ZINC® PLUS, th = 0.7 mm, continuous 8. fascia with welted panels in VM ZINC® PLUS, dimensions maximum for each panel: 400 x 2000 mm 9. breather membrane 10. continuous welt piece in VM ZINC® 11. mesh (2 mm maximum weave) 12. packers laid to gutter fall 14 13. continuous strip in VM ZINC® PLUS, th = 0.7 mm 14. ventilated space

- In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended to protect the VM ZINC®.

41 Standing Seam - Roofing Ventilated roof on incompatible support

Box gutter (gutter inside or on the L = page 76 wall)

pitch 1° 1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 12 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. folded strip in VM ZINC®PLUS, th = 0.7 mm, continuous 5. mesh (2 mm maximum weave) pitch 1° 6. plywood, 5 mm thinner than adjacent 7. plywood 8. box gutter in VM ZINC®PLUS 9. bracket in VM ZINC®PLUS, th = 0.7 mm, 9 continuous 10. packers laid to gutter fall 11. breather membrane 12. Ventilated space

- In some cases it is recommended to provide snow guards. - When cementing a wall it is recommended to protect the VM ZINC®.

Wall abutment head for curved roof 1. standing seam in VM ZINC® PLUS 2. head saddle piece in VM ZINC® 3. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m pitch min. 3° 4. continuous capping piece in VM ZINC® PLUS 5. timber 6. plywood 7. non-continuous timber 8. mesh (2 mm max weave) 9. fixing wedge 10. mastic sealant, compatible with VM ZINC® 11. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 12. breather membrane 13. ventilated space

42 Ridge

for curved roof 1. ventilated space 2. plywood 3. sprocket piece 4. mesh (2 mm maximum weave) pitch min. 3° 5. standing seam in VM ZINC® PLUS 6. saddle piece in VM ZINC® 7. sheet clip in VM ZINC® PLUS, th=0.7 mm, w=80 mm, 2 per m 8. folded clip in VM ZINC® 1 mm. L =50mm, 3 per m. 9. ridge piece in VM ZINC® PLUS 10. breather membrane, in accordance with specifications

Roof abutment

43 Standing Seam - Roofing Ventilated roof on incompatible support

Verge

1. standing seam in VM ZINC® PLUS 2. plywood 3. sliding clip VM ZINC® in stainless steel, (manually adapted/transformed) 4. fascia in VM ZINC® max. 400 x 2000 mm 5. continuous edge flashing in VM ZINC® PLUS 6. wall 7. ventilated space 8. breather membrane

Valley detail (to be used for roof pitches of minimum 14°)

1. standing seam in VM ZINC® PLUS 2. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 3. continuous welt strip in VM ZINC®, soldered continuously 4. plywood R = overlap - see page 76

5. plywood 6. valley gutter in VM ZINC® 7. ventilated space 8. water flow controler* 9. breather membrane

8* In some conditions a water flow controler can be necessary.

In some cases it is recommended to provide snow guards.

44 Box valley gutter L = Flashing length - see page 76 1. standing seam in VM ZINC® PLUS 2. continuous eaves apron strip in VM ZINC® PLUS 3. sheet clip in VM ZINC®PLUS, th = 0.7 mm, w = 80 mm, 2 per m 4. folded strip in VM ZINC® PLUS, th = 0.7 mm, continuous 5. mesh (2 mm max weave) 6. plywood, 5 mm thinner than adjacent 7. plywood 8. box gutter in VM ZINC® PLUS 9. ventilated space 10. packers fixed to gutter fall 11. breather membrane, in accordance with specifications 12. heating cables (if required) 13. overflow

- In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended to protect the VM ZINC®.

Hip

1. Ventilated space 2. plywood 3. sprocket piece 4. mesh (2 mm maximum weave) 5. standing seam in VM ZINC® PLUS 6. saddle piece in VM ZINC® 7. sheet clip in VM ZINC® PLUS 8. folded strip in VM ZINC® PLUS 9. ridge piece in VM ZINC® PLUS 10. breather membrane

45 Standing Seam - Roofing Ventilated roof on incompatible support

L = Flashing length - see page 76 Mansard

In some cases it is recommended to provide snow guards.

R = overlap - see page 76 Junctions skylight (min. pitch 14°) independent flashing standing seam in VM ZINC®

continuous welting strip section DD

section AA skylight

saddle piece

Overview To allow for the expansion of the VM ZINC®, we cover the chassis of the section BB skylight with an independent flashing. This flashing is laterally locked in the standing seam.

1. standing seam in VM ZINC® PLUS 2. saddle piece in VM ZINC® 3. fold 20 mm 4. skylight flashing 5. plywood 6. ventilated space section CC 7. sheet clip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. continuous double welt strip in VM ZINC®, soldered 9. flashing VM ZINC® PLUS to witch the standing seam is fixed 10. water deflector piece, pitch min. 0.5° 11. breather membrane 12. fold 20 mm

46 Junctions skylight (pitch above 3°) Standing seam in VM ZINC®

laid seam, soldered continuously section AA

skylight

Overview saddle piece Penetrations must not interupt more section BB than three seams. At this level, expansion of the VM ZINC® must be, towards the ridge not the eaves, 1. standing seam in VM ZINC® PLUS = no fixed clip at the ridge. 2. saddle piece in VM ZINC® 3. fold 20 mm 4. skylight flashing 5. plywood 6. ventilated space section CC 7. sheet strip in VM ZINC® PLUS, th = 0.7 mm, w = 80 mm, 2 per m 8. double welt in VM ZINC®, continuously soldered 9. standing seam fold, laid and soldered 10. water deflector piece, min pitch 0.5° 11. breather membrane neatly glued in the corners

Junction with chimney in stainless steel (between two seams)

1. standing seam in VM ZINC® PLUS 2. plywood 3. continuously soldered tube in VM ZINC® 4. twinwall chimney in stainless steel with insulation 5. flashing piece in stainless steel 6. mastic sealant, compatible with VM ZINC® 7. flashing collar in VM ZINC® (dot soldering) 8. breather membrane neatly glued 9. ventilated space

47 Standing Seam - Roofing Ventilated roof on roof boarding

7 5 6 3 4

Arch. M + W Pearce - Natural VM ZINC® 1

Composition of the roof

1 Interior finish

2 Vapour control layer

3 Insulation

4 Breather membrane

5 Ventilated air space

6 Rafter

7 Roof boarding

® 8 VM ZINC standing seam

48 Installation of this system see pages 66 to 79

Characteristics of this technique • The roof boards are fixed perpen- • VM ZINC® is installed on the roof dicular to the direction of the pitch boarding. leaving a 3 to 5 mm gap between • A 40 mm* continuous air gap must be them. left clear beneath the roof boarding, They are securely fixed to the on all the roof pitches. structure. • Continuous ventilation openings are • Maximum difference in height of made at the top and bottom. 1 mm between roof boards. • In order to keep the integrity of the The deflection measured under a rigid

> 600 mm long straight edge cannot Arch. M + W Pearce - Natural VM ZINC® roof, it is recommended to install a breather membrane on the cold side exceed 2 mm in all directions. Areas of application of the insulation and a vapour control • The roof board nails are countersunk • Roofs with a pitch from 3° to vertical. layer adapted to the internal humidity in order to avoid any contact with the ® • Classes of internal humidity load: load of the building, on the warm side VM ZINC . 1 to 4. of the insulation. • Both renovations and new buildings. Structure ® VM ZINC , the choices • Clean and dry 100 to 150 mm wide, • Natural VM ZINC®, 5 pre-weathered 18 or 24 mm thick softwood boarding, *Cf. appendix 5 page 79 VM ZINC® colours QUARTZ-ZINC®, according to the rafter centres. ANTHRA-ZINC®, PIGMENTO® red, green, • Any wood treatment products blue: 0.7 or 0.8 mm thick. (fungicides, insecticides) must be dry Specifications: • 6 Bilacquered VM ZINC® colours: and completely neutral in relation to : See www.vmzinc.co.uk 0.7 mm thick. Non standard VM ZINC® (cf appendix 6 page 80). : See www.vmzinc.ie bilaquered VM ZINC® colours are also available (for large quantities, any colour - min. orders 10 Tons). Please contact our technical office for

further information. roof boarding >

49 Standing Seam - Roofing Ventilated roof on roof boarding

Fixing clips to be used

Fixed clips

Code Fig description material qty/box 1

205709000 1 Screw-in fixed clips with stainless steel 100 countersunk screw holes

212156000 2 Nail-in fixed clips without stainless steel 100 2 countersunk screw holes

Sliding clips

Code Fig description material qty/box 3

205710000 3 Screw in sliding clips with stainless steel 250 countersunk screw holes

211960000 4 Nail-in sliding clips without stainless steel 250 countersunk screw holes 4

Fixing the clips

With either: • Ring shark, galvanised or stainless steel nails. • Chrome coated screws of a diameter, length and type appropriate to the structure.

50 Examples of details

The solutions presented here are simply examples and are not the only possibilities. Our technical assistance department is available to study other alternatives with you.

Junction gutter

1. standing seam in VM ZINC® L = Flashing length - see page 76 2. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 3. continuous eaves apron strip in VM ZINC® 4. eaves boards, 5 mm thinner than adjacent boards 5. roof boarding 6. ventilated space 7. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 8. flashing in VM ZINC® 9. continuous sheet strip in VM ZINC®, th = 0.8 mm 10. PLULINE® gutter bracket 11. PLULINE® gutter 12. breather membrane 13. mesh (2 mm max. weave) - In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended to protect the VM ZINC®.

Variation Box gutter (gutter outside the wall,

pitch min. 1° ventilation inlet through soffit) R = overlap - see page 76

1. standing seam in VM ZINC® 2. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 3. continuous double welt strip in VM ZINC®, pitch min. 1° continously soldered 4. eaves boards, 5 mm thinner than adjacent boards 5. roof boarding 6. box gutter in VM ZINC® 7. bracket in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 8. fascia with welted panels in VM ZINC®, dimensions maximum for each panel: 400 x 2000 mm 9. breather membrane 10. continuous welt piece in VM ZINC® 11. mesh (2 mm maximum weave) 12. packers fixed to gutter fall 13. continuous strip in VM ZINC®, th = 0.8 mm 14. ventilated space

- In some cases it is recommended to provide snow guards. - When rendering a wall it is recommended to Variation protect the VM ZINC®.

51 Standing Seam - Roofing Ventilated roof on roof boarding

Box gutter (gutter inside or on the L = Flashing length - see page 76 wall, ventilation inlet through gutter)

pitch min. 1° 1. standing seam in VM ZINC® 2. continuous eaves apron strip in VM ZINC® 3. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 4. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m with flat folded clip 5. mesh (2 mm maximum weave) 6. eaves boards, 5 mm thinner than adjacent pitch min. 1° boards 7. roof boarding 8. box gutter in VM ZINC® 9. bracket in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 10. packers fixed to gutter fall 11. breather membrane (optional) 12. continuous sheet strip in VM ZINC®, th = 0.8 mm 13. ventilated space

- In some cases it is recommended to provide with rolled bead snow guards. - When rendering a wall it is recommended to protect the VM ZINC®.

Wall abutment head

® pitch min. 3° 1. standing seam in VM ZINC 2. head saddle piece in VM ZINC® 3. sheet clip in VM ZINC®, th = 0.8 mm, For curved roof w = 80 mm, 2 per m The minimum pitch at the ridge must be at 4. continuous capping piece in VM ZINC® least 3° over the first metre. 5. timber 6. roof boarding 7. non-continuous timber 8. mesh (2 mm max weave) 9. fixing wedge 10. mastic sealant, compatible with VM ZINC® 11. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 12. breather membrane 13. ventilated space

52 Ventilated ridge

1. ventilated space pitch min. 3° 2. roof boarding 3. sprocket piece 4. mesh (2 mm maximum weave) For curved roof ® The minimum pitch at the ridge must be 5. standing seam in VM ZINC at least 3° over the first metre. 6. saddle piece in VM ZINC® 7. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m

8. folded clip in VM ZINC®, th = 1 mm, w = 50 mm, 3 per m Folded clip in VM ZINC® 9. ridge piece in VM ZINC®, th = 0.8 mm 10. breather membrane

Roof abutment

1. standing seam in VM ZINC® 2. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 3. VM ZINC® stepped flashings chased into the wall 4. fixing wedge 5. mastic sealant, compatible with VM ZINC® 6. roof boarding 7. breather membrane 8. ventilated space

53 Standing Seam - Roofing Ventilated roof on roof boarding

Verge

1. standing seam in VM ZINC® 2. roof boarding 3. sliding clip VM ZINC® in stainless steel, (manually adapted/transformed) 4. fascia in VM ZINC® max. 400 x 2000 mm 5. continuous edge flashing in VM ZINC® 6. wall 7. ventilated space 8. breather membrane

Valley detail (to be used for roof pitches of minimum 14°)

1. standing seam in VM ZINC® 2. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 3. continuous double welt strip in VM ZINC®, continously soldered 4. eaves boards, 5 mm thinner than adjacent boards R = overlap - see page 76

5. roof boarding 6. valley gutter in VM ZINC® 7. ventilated space 8. water flow controler* 9. breather membrane (optional)

8* In some conditions a water flow controler can be In some cases it is recommended to provide necessary. snow guards.

54 Box valley gutter

L = Flashing length - see page 76

1. standing seam in VM ZINC® 2. continuous eaves apron strip in VM ZINC® 3. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m - In some cases it is 4. folded clip in VM ZINC®, th = 1 mm, recommended to w = 250 mm, 2 per m or provide snow guards 5. mesh (2 mm max weave) - When rendering 6. eaves boards, 5 mm thinner than adjacent a wall it is recom boards mended to protect 7. roof boarding ® the VM ZINC 8. box gutter in VM ZINC® 9. ventilated space 10. packers fixed to gutter fall 11. breather membrane 12. heating cables (if required) 13. overflow

Ventilated hip

1. ventilated space 2. roof boarding 3. sprocket piece 4. mesh (2 mm maximum weave) 5. standing seam in VM ZINC® 6. saddle piece in VM ZINC® 7. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m

8. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 9. hip piece in VM ZINC®, th = 0.8 mm 10. breather membrane Folded clip in VM ZINC®

55 Standing Seam - Roofing Ventilated roof on roof boarding

L = Flashing length - see page 76 Mansard (with ventilation)

1. standing seam in VM ZINC® 2. continuous eaves apron strip in VM ZINC® 3. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 4. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 5. eaves boards, 5 mm thinner than adjacent boards 6. roof boarding 7. mesh (2 mm max weave) 8. ventilated space 9. breather membrane

In some cases it is recommended to provide snow guards.

R = overlap - see page 76 Junctions skylight (min. pitch 14°)

1. standing seam in VM ZINC® independent flashing standing seam in VM ZINC® 2. saddle piece in VM ZINC® section DD 3. fold 20 mm continuous welting strip 4. skylight flashing 5. roof boarding

section AA skylight

saddle piece

Overview To allow for the expansion of the VM ZINC®, we cover the chassis of the skylight with an section BB independent flashing. This flashing is laterally locked in the standing seam.

6. ventilated space 7. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 8. continuous double welt strip in VM ZINC®, continously soldered 9. flashing to witch the standing seam is fixed 10. water deflector piece, pitch min. 0.5° 11. rafter section CC 12. breather membrane neatly glued in the corners 5

56 standing seam in VM ZINC® Junctions skylight (min. pitch 3°)

laid seam, soldered continuously

section AA

skylight

saddle piece

Overview section BB 1. standing seam in VM ZINC® 2. saddle piece in VM ZINC® 3. fold of 20 mm 4. skylight flashing 5. roof boarding 6. ventilated space 7. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m section CC 8. continuous double welt strip in VM ZINC®, Penetrations must not interupt more continuously soldered than three seams. At this level, 9. standing seam fold, fixed and soldered expansion of the VM ZINC® must be, towards the ridge not the eaves, 10. water deflector piece, min pitch 0.5° = no fixed clip at the ridge. 11. rafter 12. breather membrane neatly glued in the corners

Junction with chimney in stainless steel (between two seams)

1. standing seam in VM ZINC® 2. roof boarding 3. tube in VM ZINC® 4. twinwall chimney in stainless steel with insulation 5. flashing piece in stainless steel 6. mastic sealant, compatible with VM ZINC® 7. flashing collar in VM ZINC® (dot soldering) 8. breather membrane (optional) 9. ventilated space 10. soudure continue

10 *: Fire space in accordance with the building regulations

10 E: make allowances for the expansion & contraction of the VM ZINC® (depending of the temperature when applied) Note: the top of the chimney must be high enough to prevent deposit falling onto the roof. We recommend the use of an uncovered finishing cone for fuel oil heating chimneys.

57 Standing Seam - Roofing Example: very low pitch, ventilated roof

Area of application • In order to keep the integrity of the roof, it is recommended to install a • From a 3° pitch. breather membrane on the cold side • Both renovations and new buildings. of the insulation and a vapour control pitch min. 1° VM ZINC®, the choices layer adapted to the internal humidity load of the building, on the warm side • Natural VM ZINC®, QUARTZ-ZINC®, of the insulation. ANTHRA-ZINC®: 0.7 or 0.8 mm thick. • 6 Bilacquered VM ZINC® colours: Structure 0.7 mm thick. See structure recommendations • PIGMENTO® on page 9. Characteristics of this technique

• The VM ZINC® is installed on the roof boarding. Specifications: • A 40 mm* (minimum) ventilated : See www.vmzinc.co.uk Head verge air gap must be left under the roof See www.vmzinc.ie boarding of the entire roofing area. : 1. standing seam in VM ZINC® • Continuous ventilation openings must 2. saddle piece be made at the top and bottom of the 3. sheet clip in VM ZINC®, th = 0.8 mm, *Cf. appendix 5 page 79 roof*. w = 80 mm, 2 per m 4. mesh (2 mm max weave) 5. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 6. sprocket piece 7. capping piece in VM ZINC® Example of renovation of a roof 8. roof boarding with a low pitch 9. discontinuous roof boarding 10. ventilated space 1. capping piece in VM ZINC® 11. breather membrane (optional) 2. standing seam in VM ZINC® 3. loadbearing structure 4. box gutter in VM ZINC® 5. head verge with saddle piece in VM ZINC® 6. existing roof 7. new insulation see joint detail

pitch min. 3°

58 Standing seam Specific applications Installation of this system see pages 66 to 79

Area of application • Continuous ventilation openings must be made*. • Both renovations and new buildings. Structure VM ZINC®, the choices See structure recommendations • Natural VM ZINC®, QUARTZ-ZINC®, on page 9. ANTHRA-ZINC®: 0.7 or 0.8 mm thick. • 6 Bilacquered VM ZINC® colours: 0.7 mm thick. • PIGMENTO®

Characteristics of this technique Specifications: • The VM ZINC® is installed on the roof boarding. : See www.vmzinc.co.uk • A continuous air gap of at least : See www.vmzinc.ie 40 mm* must be left under the roof *Cf. appendix 5 page 79 boarding.

Secret box gutter

R = overlap - see page 76 with bullnose detail 1. standing seam in VM ZINC® 2. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 3. continuous double welt strip in VM ZINC®, soldered 4. eaves boards, 5 mm thinner than adjacent boards 5. roof boarding 6. box gutter in VM ZINC® 7. continuous strip in VM ZINC®, th = 0.8 mm 8. mesh (2 mm maximum weave)

9. packers fixed to gutter fall 10. ventilated space 11. fascia with welted panels in VM ZINC®, dimensions maximum for each panels: 400 x 2000 mm 12. standing seam in VM ZINC® Detail between the welted panels (n° 11). 13. junction saddle piece in VM ZINC® 14. saddle piece in VM ZINC®

59 Standing Seam - Facade Ventilated cladding, horizontal panels installed on boarding

Arch. Brock Carmichael - QUARTZ-ZINC® Characteristics of this technique > • The VM ZINC® is installed on the • 75° to 90° facades: install boards boarding. vertically leaving 3 to 5 mm between • A continuous 20 mm* (minimum) them. ventilated air gap is to be left behind • 90° facades: install boards vertically at the boarding on the entire facade. 400 mm centre-to-centre. However, • Continuous ventilation openings must for the areas of the facade nearby be made at the top and bottom*. traffic, continuous boarding should be • An efficient rain screen is recom- installed to a height of 2 m. mended. The insulation panels • Maximum difference in height of must be sufficiently rigid and well 1 mm between roof boards. The anchored to their structure to prevent deflection measured under a rigid 600 them from moving and blocking the mm long straight edge cannot exceed ventilation space (Cf. appendix 5 2 mm in all directions. page 79 and refer to the insulation • The nails fixing the boards are manufacturer’s specifications). countersunk in order to avoid any • To prevent potential quilting or canning contact with the VM ZINC®. of the tray centre’s, we recommend Area of application that seam centres are limited to • Roofs with a pitch from 75° to 430mm. (coil width 500 mm) *Cf. appendix 5 page 79 90°. Structure • Both renovation and new buildings. • Clean and dry 100 to 150 mm wide by • Classes of internal humidity 18 or 24 mm thick softwood boards, load: 1 to 4. depending on the centre-to-centre distance between bearing structure VM ZINC®, the choices elements. • Any wood treatment products • Natural VM ZINC®, QUARTZ- Specifications: (fungicides, insecticides) must be dry ZINC®, ANTHRA-ZINC®: 0.7 or : See www.vmzinc.co.uk and completely neutral to VM ZINC® 0.8 mm thick. (see appendix 6 page 80). : See www.vmzinc.ie • 6 Bilacquered VM ZINC® colours: 0.7 mm thick.

• PIGMENTO® Arch. Brock Carmichael - QUARTZ-ZINC® >

60 Facade installation: see pages 66 to 79

Fixing clips to be used and how to fix them

Consult page 10 of this manual. However, since the last panel (at the top of the cladding) is specially profiled (L profile stiffener is mandatory), special sliding clips are soldered in place with spacing of 3 clips/m (see detail).

Examples of details

The solutions presented here are simply examples and are not the only possibilities. Our technical assistance department is available to study other alternatives with you.

Junctions with window

1. standing seam in VM ZINC® 2. boarding 3/m, vertical (ventilation) 3. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 4. breather membrane/rain screen 5. mesh (2 mm max. weave) Verge junction 6. continuous double welt strip in VM ZINC®, soldered 7. mastic sealant, compatible with VM ZINC® 8. non-continuous timber pitch min. 1° 9. window frame 10. continuous strip in VM ZINC® 11. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 12. ventilated space 13. loadbearing structure 14. insulation

61 Standing Seam - Facade Ventilated cladding, horizontal panels installed on boarding

pitch min. 1° Head cladding

1. standing seam in VM ZINC® 2. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 3. mesh (2 mm max. weave) 4. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 5. capping piece in VM ZINC® 6. vertical boarding 3/m (ventilation) 7. loadbearing structure 8. bituminous membrane 9. breather membrane/rain screen (optional) 10. insulation

End of cladding

1. standing seam in VM ZINC® 2. edge flashing in VM ZINC® 3. mesh (2 mm max weave) 4. vertical boarding 3/m (ventilation) 5. loadbearing structure 6. breather membrane/rain screen (optional) 7. capping piece in VM ZINC® 8. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m

® pitch min. 1° 9. folded clip in VM ZINC , th = 1 mm, w = 250 mm, 2 per m 10. continuous strip in VM ZINC® 11. insulation

62 Standing Seam - Facade Ventilated cladding, vertical panels installed on boarding > Arch. Brock Carmichael - QUARTZ-ZINC® Characteristics of this technique (cf. appendix 6 page 80). • 75° to 90° facades: install boards • The VM ZINC® is installed on the horizontally leaving 3 to 5 mm boarding. between them. • A continuous 20 mm* (minimum) • 90° facades: install boards horizontally ventilated air gap is left clear behind at 400 mm centre-to-centre. However, the boarding on the entire facade. for the parts of the facade nearby • Continuous ventilation openings are traffic, continuous boarding should be made at the top and bottom*. installed to a height of 2 m. • An efficient rain screen is recom- • Maximum difference in height of mended. The insulation panels 1 mm between roof boards. The must be sufficiently rigid and well deflection measured under a rigid 600 anchored to their structure to prevent mm long straight edge cannot exceed them from moving and blocking the 2 mm in all directions. ventilation space (Cf. appendix 5 • The nails fixing the boards are page 79 and refer to the insulation countersunk in order to avoid any manufacturer’s specifications). contact with the VM ZINC®. • To prevent potential quilting or canning Area of application of the tray centre’s, we recommend • Roofs with a pitch from 75° to 90°. that seam centres are limited to 430mm *Cf. appendix 5 page 79 • Both renovation and new buildings. (coil width 500 mm). • Classes of internal humidity load: Structure 1 to 4. • Clean and dry 100 to 150 mm wide by VM ZINC®, the choices 18 or 24 mm thick softwood boards, depending on the centre-to-centre • Natural VM ZINC®, QUARTZ-ZINC®, distance between bearing structure ANTHRA-ZINC®: 0.7 or 0.8 mm thick. elements. ® Specifications: • 6 Bilacquered VM ZINC colours: • Any wood treatment products See www.vmzinc.co.uk 0.7 mm thick. (fungicides, insecticides) must be dry :

• PIGMENTO® and completely neutral to VM ZINC® : See www.vmzinc.ie Arch. Belaen & Van de Loock - QUARTZ-ZINC® >

63 Standing Seam - Facade Ventilated cladding, vertical panels installed on boarding

Fixing clips to be used and how to fix them

Consult page 10 of this manual.

Examples of details

The solutions presented here are simply examples and are not the only possibilities. Our technical assistance department is available to study other alternatives with you.

Junctions with window

1. standing seam in VM ZINC® 2. boarding 3. folded clip in VM ZINC®, th = 1 mm,

Verge junction w = 250 mm, 2 per m 4. continuous strip in VM ZINC®, th = 0.8 mm pitch min. 1° 5. mesh (2 mm max. weave) 6. continuous double welt strip in VM ZINC®, soldered 7. mastic sealant, compatible with VM ZINC® 8. capping piece in VM ZINC® 9. window frame 10. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 11. loadbearing structure – ventilated space 12. breather membrane/rain screen (optional) 13. insulation

64 Standing Seam - Facade Ventilated cladding, vertical panels installed on boarding

pitch min. 1°

Head cladding

1. standing seam in VM ZINC® 2. boarding 3. mesh (max. gap size 2 mm) 4. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 5. capping piece in VM ZINC® 6. bituminous membrane 7. ventilated space 8. breather membrane/rain screen (optional) 9. insulation

End of cladding

1. standing seam in VM ZINC® 2. continuous edge flashing in VM ZINC® 3. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 4. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m 5. capping piece in VM ZINC® pitch min. 1° 6. boarding 7. mesh (max. gap size 2 mm) 8. ventilated space 9. breather membrane/rain screen (optional) 10. insulation

65 Standing seam System installation - General Information

Umicore organises practical training courses on the installation of VM ZINC® standing seam:

• Reserved for roofing professionals. • Organised in a covered, specially equipped training centre.

www.vmzinc.co.uk

www.vmzinc.ie

01992 822288

Expansion of VM ZINC®

Any work involving VM ZINC® must allow it to expand and contract freely. The linear expansion of VM ZINC® is 0.022 mm per metre and per degree centigrade.

Example: In United Kingdom and the Republic of Ireland, the temperature range to bear in mind is from – 20°C in mid-winter to + 80°C on the surface of the metal in the sun at the height of the summer. Assuming an ambient temperature of 20°C during installation, we have to take into account: • An additional 60°C (expansion) • 40°C less (contraction).

For a 10 metre long panel: • anticipate an 0.022 mm x 10 x 60 = 13.2 mm increase in length • anticipate 0.022 mm x 10 x 40 = 8.8 mm contraction.

Layout

Layout centred on axis – section either: • a joint on the central axis of the 530 mm standing seam surface to be covered. (1) (1) • the middle of a sheet on the central surface to be covered axis of the element to be covered.

Off-centre layout Dormers, chimneys or other obstacles standing seam must be taken into account before (1) (1) deciding layout. surface to be covered (1) see page 67.

66 Measuring for and ordering profiled panels

Standard measurements: It is best to order panels that are about Useable width: 530 mm 180 mm longer than the part to be Height of standing seam: 25 mm covered. For components which are not Thickness: (0.7 mm) - 0.8 mm parallel to the base and/or the head a To estimate the weight of VM ZINC® for bigger reserve should be planned for. the full surface, apertures and joints For a curved roof the exact bend radius included, based on 600 mm between of the structure must be given when joints: the order is placed. During profiling, this • Thickness 0.7 mm: + 5.66 kg/m2 radius is increased by 50 to 100 mm, so 530 mm • Thickness 0.8 mm: + 6.47 kg/m2 that the panel moulds perfectly to the Before accepting any order, the spacing shape of the roof. between joints and marking of the L profile U profile panels for the building to be covered For conical roofs please consult our must be studied very carefully. PRO-ZINC department.

Sheet profile There must be a sufficient reserve of material on the lateral panels for When using standing seam for cladding, upstands to be made along the edges, in order to prevent potential “quilting? along the walls etc. or “canning? of the tray centre’s, we recommend that seam centres are limited to 430mm. It is possible to use 530mm seam centre’s, but there is a potential for this phenomenon to occur.

For projects located in areas with a high wind level we advise the use of sheet widths of max. 400 mm. In special cases, i.e. theatres, VM ® Overlapping of sheets Single lock ZINC has developed an acoustical zinc before crimping 4 mm system. For more information on these Double lock applications, please contact our technical service.

Maximum length of panels

The maximum length of roofing panels is 10 m. However, experience has shown that: • On roofs, if the fixing clips are installed according to particular specifications, panels up to 13 m can be fixed. Particular care must be taken with the installation of this type of application. • At least three people are needed to handle the panels without damaging them. Consult us first. The longest sides must be divided by one or several steps or welts. • For facades, the length of the panels is limited to 6 m, both for ease of handling and to allow for expansion.

67 Standing seam System installation

Transportation and storage of profiled VM ZINC®

The panels must be transported and Unlike the patined layer, white rust stored vertically, standing on the provides no protection and leaves L profile in containers designed for them. unattractive, indelible marks on the They must be transported and stored roof or facade. Consequently, we do not in dry conditions and in a constant recommend installing panels that have temperature in order to avoid the been attacked by white rust. formation of white rust.

White rust forms on the surface of VM ZINC® when the latter comes in contact with humidity in the absence of carbon dioxide. In this case, the protective passivated layer cannot form and white rust appears on the surface.

Installing VM ZINC®

Before installation • The panels have the correct The roofer must ensure that: measurements and profiles. • the structure is dry, clean and • The structure conforms (flatness, free of any rubbish (nails, leaves, compatibility, etc.) to the vegetation, etc.). All the substrates specifications. must be flat, dry, and sufficiently resistant to all the stresses to which Direction of installation they will be submitted (e.g. pull out Installation can begin on the right or force of 50daN per standing seam the left, regardless of the direction of fixing clip). prevailing winds. Crimping can be done Maximum flush tolerance of 1 mm. In either from bottom to top or top to the case of installation on a separation bottom! Some electric crimping machines membrane, the roofer must also make only allow crimping in one direction! sure that this is clean and dry. So check before deciding on installation direction!

Working VM ZINC®

To avoid micro-cracks in the VM ZINC® PIGMENTO requires working specifications to the right of the folds, do not work with PIGMENTO are slightly different it when the temperature of the metal is below 7°C.

68 Standing seam System installation - Preparation and fixing of the top of the panels

All the junctions at the top of the For watertightness safety reasons we depends highly on the competence of the roof (ridge cap, wall abutment, upper recommand the usage of the “saddle roofer. It remains the architect choice to edge) are made using the saddle piece piece” which is in our opinion the most accept or refuse this alternative. technique. efficient solution. For cladding, please consult the sketches However another solution (folded seam) The cut out joint is still allowed on pages 61 to 65. exists, the watertightness of this solution

Preparation of the tray with an “exterior secured fold” Pitch max. 60° to cut out secured fold

to cut out

α height of upturn (80 + 20 mm)

part to be turned Fig. B up according the pitch of the roof Fig. A Fig. C α = 90° - pitch 2

saddle piece secured fold place tray B on tray A to fold after installation of the saddle piece Fig. C

corner to be folded back A B

Fig. D Fig. E Fig. F

Preparation of the tray with an “interior secured fold” secured fold (20 mm) to cut out Fig. A Fig. C

corner to be folded forward β = 45° part to be turned up hight of upturn to vertical (80 + 20 mm) Fig. B

Fig. F

Fig. D Fig. E to fold after installation of the saddle piece place tray B on tray A saddle piece

A B

69 Standing seam System installation - 3 stage installation of panels

1. Laying the panel on the structure 2. Installation of clips • Lay the panel on the structure Number of clips for roofing: • The L profile of the preceding panel and the clips The number of clips on the roof depends on the that have been fastened to the panel and fixed to climate zone. The diagram page 71 represents the the structure are covered by the U of the next panel, installation of standard 530 mm useable width avoiding stresses and lateral traction. panels, for normal wind loads.

2 Type of clips to be used and fixing method: Zone a (middle): 1 clip every 330 mm (6 pieces/m ) Zone b: 1 clip every 200 mm (9 pieces/m2) You will find the clips specified for each type of Zone c (edges): 1 clip every 150 mm (11 pieces/m2) application on pages 10, 20, 30, 40 and 50. Zinc clips must not be used: they do not offer sufficient wind uplift resistance and because they are too thick, they prevent free expansion of the panels.

In most cases the fixed clips hold the panels in place at the highest point and direct expansion downwards. Two clips are placed one behind the other at each joint (3 for panels longer than 10 m) (Fig. A).

For pitches greater than 75°, the seam is cut and fold (see diagram) to prevent the panel from slipping downwards (Fig. B).

The sliding clips are fixed to the structure taking care always to centre the sliding component in the 25,5 36 slot.

24 Fig. B

70 The installation sequence described here is the one we recommend. However, it is possible to use other sequences.

3. Preparation of the panels for crimping

• Depending on the type of crimper, a 150 mm long single lock seam is made using 50 mm flat nippers or first fold seamers (special hand nippers) at the top or bottom of the standing seam panel. This allows the crimper to be inserted in the joint. • This manoeuvre is repeated about every metre, so that the panels do not separate during crimping and are not lifted by wind action.

NB: At the bottom of the pitch, the fixing clips are placed as close as possible to the eaves strip which must not be penetrated in any circumstances.

min. 1100 mm

min. 1100 mm Fig. A c b ridge c 1 b 600 mm a b c b 2 c 600 mm 1. fixed clips eave 2. sliding clips

71 Standing seam System installation - Crimping

For roofs with a 3° to 75° pitch, it is compulsory to join strips using double lock seams. Do not crimp when the metal temperature is below 7°C or else use a crimper equipped with a heater. Crimping can be done using an electric or hand crimper.

Crimping with an electric crimping machine • Start up the machine: with switch in forward position There are special machines for particular uses: flat • The machine moves forward automatically and makes panels, curved panels, cladding, multi-function. Some a double seam in one pass. machines are reversible while others work only in one • At the end of the seam, support it while keeping it direction (upwards or downwards). perfectly parallel to the roof. An electric crimping machine should not be used in wet • The seaming machine can be stopped at any point conditions (risk of electrocution). along the seam, be lifted off and then replaced on it. • In the case of very steep pitches, tie a rope to the Crimping: front handle and help the machine by pulling it up to Preparation of standing seam for closing with an electric the ridge of the roof. To move the machine down the seamer. pitch, open the pressure lever and let it descend the • Make a single seam by hand along length of the folded standing seam with the help of 150 mm at one end of the pitch (Fig A). the rope. • Fit the machine onto the joint (*) • Close the handle

Fig. B

Fig. A 150 mm 150 mm

350 mm (*) Should it be difficult to place the machine on to the single folded profile, make a double fold by hand over a length of 350 mm and a further single fold along the length of the 150 mm of the profile. Place the machine on the double folded joint and firmly close the roller arm of the machine (Fig. B).

72 Hand crimping The joint is closed once along its entire length using first fold seamers (special hand nippers). The second fold is made using second fold seamers.

Hand crimping - Tools

Second fold seamer Angled pliers

First fold seamer

Large flat pliers Small bending pliers Roofing seamer

Installation: Mallet Fig. A. Overlap sheet 2 on sheet 1, which is held in place by the previously installed fixing clips, by placing the sheets one on top of the other. Fig. B. 1st fold made with the seaming pliers (manual single seaming). Fig. C. 2nd fold (manual double seaming). Fig. D. Close the last few centimetres of the sheets at the abutment with a mallet and roofing seamer.

Installation

Fig. C Fig. D 2 Fig. B

Fig. A 1

Seaming recommendations: • Do not seam when it is raining (danger of electrocution) 200 mm Fig. E • For oxidised zinc, use a cloth soaked in oil to go over the standing seam. A minimum space of 200 mm is needed to remove the seamer. Finish seaming the 200 mm by hand (Fig E). The lateral space required for the seamer is 200 mm (Fig F). 200 mm Fig. F The installation plan (layout –see page 66) should be studied beforehand in order to limit manual interventions as much as possible, and ensure optimal use of the machine.

73 Standing Seam - Facade Installation of the system on facades

UPPER AND LOWER Distinctive characteristics of standing seam on facades EDGE OF TRAY Installation (vertical panel): The sheet is fixed either with two nails or with fixed clips at the top (see pages 62 and 65). At the bottom, the edges of the sheets are cut out. The flat part of the sheet is folded 180° towards the back and is slid into the continuous 8 mm thick VM ZINC® attachment strips which have been previously nailed to the supporting structure (Fig A). For cladding higher than 4 m, we recommend cutting the strips and installing them with a minimum overlap of 60 mm. Fig. A Seaming: For seaming overlapping sheets the L profile of the upper sheet and the U profile of the lower sheet should be cut over 40 mm (Fig B). VARIATION This makes handling easier and ensures better flatness. For pitches of over 75° single seaming is preferred. In order for the joint to be properly closed, two people are needed to do this work: • the first, at the top of the sheet, supports the seamer with a rope, • the second positions the machine against the wall at the bottom

Number of clips on the facade: The number of clips and their distribution are determined in the same way as for a roof pitch (see page 71, Fig. A - below).

OVERLAP OF TRAYS

Fig. B

74 Removing the protective film from pre-weathered zinc

As a general rule, the film must be removed from the entire surface at the same time, immediately following the installation of VM ZINC®. Exceptions to this rule: • Roofs: when the roofer still has to walk on it to install flashings. • Roofs: when people still have to walk on it to do other work such as masonry, joint filling, rendering walls, installing windows, safety equipment, lighting equipment, etc. • Facades: when the cladding is close to the ground and there is still work to be done around it, etc. Under no circumstances must the film be left on installed VM ZINC® for more than a month.

Pre-weathered QUARTZ-ZINC® and ANTHRA-ZINC® are produced using a surface treatment on Natural VM ZINC®. As with all patinas, this change in the crystalline structure of both surfaces of the metal evolves with time. The pre-weathering treatment completed at the plant gradually evolves and coalesces over time with the naturally formed zinc patina. To ensure a consistent finish we recommend profiling and installing the components of a new project using a parent coil.

Moving around on the VM ZINC® during and after installation on the roof

As a general rule, moving around on already installed VM ZINC®, is to be avoided even if the latter is protected by film.

However, if it is necessary to walk on the zinc, we strongly advise moving around using specially designed ladders and wearing safety shoes made for slippery surfaces as Natural VM ZINC®, bilacquered VM ZINC® and pre-weathered VM ZINC® are slippery whether they are covered by film or not, particularly when they are wet.

In any case, obey the building site safety standards in force and as a minimum make sure you are always secured by a safety harness.

The VM ZINC® fitted should be protected during peripheral works (rough casting, tuck- pointing, rendering, etc). However, this protection must allow effective ventilation of the upper surface of the VM ZINC®.

75 Standing seam - Appendix 1 Junctions at the base of the pitch

The solutions shown here are examples and are not the only ones possible. Our technical department is available to analyse alternatives with you.

Junctions using an eaves apron strip (used mainly with gutters):

1. standing seam in VM ZINC® 2. sheet clip in VM ZINC®, th = 0.8 mm, w = 80 mm, 2 per m 3. continuous eaves apron strip in VM ZINC® 4. loadbearing structure 5. folded clip in VM ZINC®, th = 1 mm, w = 250 mm, 2 per m or in galvanised steel, th = 0.8 mm L = Flashing length: - For pitch stronger than 14° L = 70 mm - For pitch between 3° and 14° L = 120 mm

A = nose of the eaves apron strip - For trays of standing seam smaller than 7 m A=B= 30 mm - For trays longer or egal than 7 m A=B= 50 mm

C = C’ depending of the temperature when the standing seam is applied see chapter of the expansion/contraction of the standing seam.

End roof with soldered continuous welting strip

1. standing seam in VM ZINC® 2. sheet clip in VM ZINC® th = 0.8 mm, w = 80 mm, 2 per m 3. continuous welting strip in VM ZINC®, soldered 4. loadbearing structure

R = overlap - Pitch stronger than 14° R=120 mm - Pitch between 9° and 14° R=150 mm - Pitch between 3° and 9° R=300 mm

A = B - For standing seam trays smaller than 7 m A=B=30 mm - For standing seam trays longer than 7 m A=B=50 mm

C = C’ depending of the temperature when the standing seam is applied. see chapter about expansion/contraction of standing seam

A’=20 mm minimum

76 Standing seam - Appendix 2 Verge flashing

The solutions shown here are examples and are not the only ones possible. Our technical department is available to analyse alternatives with you.

Verge detail with VM ZINC® fascia board

1. Roof boarding 2. Fascia board 3. Tray folded to form vertical profile 4. sheet clip in VM ZINC®, th = 0.8 mm, w = 250 mm, 2 per m 5. continuous eaves apron strip in VM ZINC® 6. VM ZINC® fascia piece, th = 0.8 mm 7. VM ZINC® capping piece, th = 0.8 mm

Pitch ≥ 14° H min. = 35 mm Pitch ≤ 14° H min. = 55 mm

VM ZINC® verge fascia for curved roof

Junction:

detail with saddle piece (Fig. A)

detail with welted panels (Fig. B)

1. Clip in VM ZINC® th = 0.7 mm, w = 50 mm VERGE FASICA A-B

77 Standing seam - Appendix 3 and 4 Flashings and forbidden contacts

Appendix 3: Flashings

IMPORTANT: Box gutters, gutters, eaves apron strips, surrounds of windows set in the roof and chimney surrounds must be installed before the panels are fixed.

Verge and ridge cap flashing is installed after the panels are fixed.

Appendix 4: Forbidden Contacts

Direct contact with products such as fresh concrete, plaster, bitumen, mortar and structures containing substances that are aggressive towards VM ZINC®.

Contact with metals such as copper, unprotected or ungalvanised iron, natural lead is forbidden.

Only galvanised steel, natural lead protected by a patinating oil, FLEXUM® lacquered lead, aluminium and austenitic stainless steel can come in contact with VM ZINC®.

Heating oil soot resulting from imperfect combustion landing on the zinc causes irreparable damage. Regular maintenance of furnace burners and the use of fuel that meets standards prevent this damage. Using chimney “caps” may lead to aggressive deposits on the VM ZINC®. Use of an uncovered finishing cone is therefore recommended for fuel oil heating chimneys.

> Arch. D. Wauters- QUARTZ-ZINC®

78 Standing seam - Appendix 5 Ventilation of VM ZINC® - Roofing and cladding

Contact with the outside air provides the If it is impossible to realise this type long, intermediate air inlets should be

CO2 required to form the natural patina of of ventilation, it must be replaced by planned for. VM ZINC®. another air inlet system such as roof ventilators (pitches > 21°) or air vents. In most cases, a layer of insulating Without the presence of outside air These air inlets are to be carefully spaced material is placed below the ventilated VM ZINC® does not protect itself and if to ensure that the entire underside of space. In order to avoid the risk of there is any condensation, a chemical the metal is ventilated. poorly installed insulation obstructing reaction can occur. As a result there can the air space, or of the insulation getting be corrosion on the underside of the Fixing fine mesh (< 2 mm) to all the air wet as the result of condensation, a VM ZINC® which is not visible until holes inlets will deter insects, rodents and birds breather membrane is required on the appear on the outer skin. from entering. top side of the insulation. This breather membrane must be vapour permeable Therefore, to ensure the durability of The minimum depth of the air space and end in the gutter, the box gutter or VM ZINC® fixed on roof boarding its under the roof boarding must be 40 mm. on the outside of the building. underside must be ventilated. The total area of the air inlets (eaves and ridge) is 1/1,000th of the surface area of This breather membrane can also The best ventilation is ensured by two the roof, with a minimum width of prevent convection currents of (cold) continuous air inlets: one at the bottom 10 mm in the case of continuous outside air entering the building. and the other at the top of the roof pitch ventilation. or cladding. Given the increasing level of insu- For installation on roof boarding, the In general we advise planning a total lation in buildings, the installation underside of the latter and thus the area for ventilation at the ridge that is of an effective vapour control layer underside of the VM ZINC® will be 1.5 times greater than at the base of on the warm side of the insulation is ventilated. the roof. For pitches greater than 13 m required.

The use of “PLUS” type VM ZINC® the underside of which has already been protected during production, means that installation can be done without ventilation of the underside as shown on pages 18, 28, 38 and 48. (Natural VM ZINC® PLUS, QUARTZ-ZINC® PLUS or ANTHRA-ZINC® PLUS, PIGMENTO®: red, green, blue).

> Developer: Berkeley Homes - QUARTZ-ZINC®

79 Standing seam - Appendix 6 Compatibility of VM ZINC® with wood, wood derivatives, glues and mastics

The compatibility of the wood with VM ZINC® must be analysed before specifying and installing.

1. VM ZINC® on a wooden load bearing structure

1.1. Wood varieties that may or may not be placed in contact with VM ZINC®

Compatible varieties Incompatible varieties

Fir (red or white) Larch Spruce Oak Pine Chestnut Poplar Red or white cedar Douglas pine All wood varieties with a pH < 5

1.2. Compatibility of wood treatment products with VM ZINC® If the wood is treated, the compatibility of the treatment products with VM ZINC® must be checked (see table below).

Indicative table of wood treatment products*

Compatibility with Type of treatment Components Class VM ZINC®

Non-fixing metal salts Single component salts used in water NO C1 (fluorine, boron or copper)

Complex metal salts containing chromium to Study in progress Metal fixing salts C1 to C5 fix the active metals (CCA, CCB) (consult manufacturer)

Organic products Contain oil solvents YES C1 to C3

Use water as a vehicle combined with non- Emulsions YES C1 to C2 hydrosoluble synthetic substances

Combined metal compounds (copper and To be determined Combined products C1 to C4 boron) with synthetic molecules (consult manufacturer)

Compound of active substances produced To be determined Creosote C4 from hard coal distillation (consult manufacturer)

* always refer to the manufacturer’s notice for the product used.

80 1.3. Compatibility of glues and mastics with VM ZINC® If less traditional decking is used (e.g. wood panels), the compatibility of all the decking’s components (e.g. glues) with VM ZINC® should be checked, and, if applicable, the possibility of ventilating the under-surface of the VM ZINC® (see table below).

Indicative table of glues and mastics*

Compatible products Incompatible products

Polyurethanes Acetic silicones Non-acetic silicones Acid epoxides MS Polymers Ureas/melanin/phenol-formaldehyde (wood or panel glue)

Acrylics (depending on the reagent used) * always refer to the manufacturer’s notice.

2. Use of wood above VM ZINC® Incompatible wood varieties may not be used above VM ZINC® elements (e.g. weather-boarding with incompatible boards or panels above the VM ZINC®). Incompatible timber wash, treatment products or tanic acids will quickly attack the zinc and cause the formation of unattractive stains.

81 Subject

This document is intended for specifiers (building project architects and design teams)

and users (companies responsible for installation on the building site) of the designated product or system.

Its purpose is to provide the main information, text and diagrams, relating to specification and installation (including supporting structures) and flashing installation.

Any use or specification outside the area of use and/or specifications contained in this manual requires specific consultation with the Umicore technical departments. This does not commit the

latter to any responsibility with regard to the feasibility of the design or implementation of these projects.

Countries of application

This document applies exclusively to the specification and installation of the designated products or systems on building sites in United Kingdom and the Republic of Ireland.

Qualifications and reference documents

Please note that the correct use of this manual requires knowledge of VM ZINC® materials and of the zinc-roofing profession.

While construction is underway all standards in force must be respected, including:

• British Standard Code of Practice for control of condensation in buildings, BS5250:2002.

• Calculation procedure in BS EN ISO 13788:2001.

• BS 5250: 2002: Code of practice for control of condensation in buildings.

• BS 5427: Part 1: 1996: Code of practice for the use of profiled sheet for roof and wall cladding on buildings.

• BS 6229: 1982: Flat roofs with continuously supported coverings. Code of practice.

• BS 6399 Part 2: 1997: Loading for buildings. Code of practice for wind loads.

• BS EN 501: Roofing products from metal sheet. Specifications for fully supported roofing products of zinc sheet.

• BS EN 988: Zinc and zinc alloys. Specification for rolled flat products for building.

• BS EN 12056: Part 3: 2000: Gravity drainage systems inside buildings. Roof drainage, layout and calculation.

• BS EN ISO 13788: Hygrothermal performance of building components and building elements. Internal surface temperature to avoid critical surface humidity and interstitial condensation.

Calculation methods.

• CP 143: Part 5: 1964 Zinc: Code of practice for sheet roof and wall coverings. Zinc.

Furthermore, Umicore offers training courses specifically for professionals.

Responsibility

The specification and installation of VM ZINC® products manufactured by Umicore are the sole responsibility of the architects and building professionals who must ensure these products are used in

a way suited to the end purpose of the construction and that they are compatible with other products and techniques used.

The specification and installation of the products implies respecting the standards in force and the manufacturer’s recommendations. In this regard, Umicore publishes and regularly updates

specification and installation manuals for specific geographic areas and provides training courses. All the information on the latter can be obtained from the local VM ZINC team.

Unless otherwise agreed in writing, Umicore cannot be held responsible for any damages resulting from a specification or installation that does not respect all of Umicore’s specifications and the

above standards and practices.

82 Project by: Chetwood associates

Umicore Marketing Services U.K. Four Rivers House, Fentiman Walk Hertford, Herts, SG14 1DB

( 01992 822288,  01992 584460

VMB VM 00004 ZINC - 09/08 F04 001 0604 ENG3 - You can find the list of current technical publications on www.vmzinc.co.uk. or www.vmzinc.ie Pictures: J. Collot, P. Kozlowski. : www.vmzinc.co.uk

: www.vmzinc.ie