FOAMULAR Waterproofing Insulation

FOAMULAR Waterproofing Insulation Horizontal Guide Specification

Section 07220 Roof Insulation Materials

Horizontal waterproofing applications incorporating FOAMULAR waterproofing insulation products include the use of single ply, built-up asphalt, hot fluid applied, or modified bituminous membranes. These horizontal applications may be ballasted/protected with precast pavers, stones or gravel, cast in place concrete, or earth fill. Precast pavers or cast in place concrete may be placed directly over FOAMULAR or they can be elevated to promote venting/drainage with pedestal support systems or a drainage course.

The intent of this guide specification is to generally define and establish materials, describe installation techniques, and define the division of responsibilities. Although the details contained herein are believed to be accurate, actual construction specifications are the responsibility of the project designer. Owens Corning assumes no responsibility for project details.

See Owens Corning FOAMULAR New Construction Guide specifications for information relative to specifying FOAMULAR products below waterproofing membranes.

[Bracketed boldface] information must be edited to suit the use of a particular FOAMULAR product for a horizontal waterproofing application. Boldfaced underlined denotes explanatory information for review as needed.

PART 1 – GENERAL 1.02 Quality Assurance 1.01 Description of Work A. The insulation and waterproofing A. This guide specification describes membrane system must be applied typical application guidelines for by a contractor authorized by the Foamular insulation and generic waterproofing membrane membranes utilized in horizontal manufacturer. waterproofing applications. Owens Corning shall be contacted for B. Preconstruction Review: Before specific information about particular beginning construction, products and systems. waterproofing, insulation, and ballast/protection system, the B. Furnish and install FOAMULAR installer shall meet with installers of [404, 404RB, 604, 604RB, INSUL- work adjacent to or which penetrates DRAIN, or FANFOLD] in horizontal the waterproofing, insulation, and waterproofing applications in strict ballast to discuss the system. The accordance with Drawings and meeting shall include an owner’s Specifications and per Owens representative and the waterproofing Corning FOAMULAR published system manufacturer’s recommendations. representative to review procedures

N-7 January 1998 for preparation of the substrate and G. The waterproofing membrane must application of the be labeled with manufacturer’s name waterproofing/insulation/ballast. and product brand name.

C. The insulation selected shall be H. There shall be no deviations from compatible with the waterproofing manufacturer’s/supplier’s membrane and acceptable to the specifications or the approved shop membrane manufacturer. drawings without the prior written approval of the manufacturer. D. Before start of waterproofing system application, review installed substrate surfaces for compliance 1.03 Submittals with preparation requirements. Document necessary actions for Sections A and B that follow only correcting unacceptable surface apply to those jobs for which an conditions. Owens Corning Thermal Overlay Warranty will be issued. See 1.02 B. E. Upon completion of the installation, an inspection shall be made [by a A. [Owens Corning Design Approval representative of Owens Corning, Form and shop drawings waterproofing manufacturer]. The prepared by the specifier must be insulation and ballast inspection submitted and approved prior to is required only if a Thermal beginning installation.] Overlay Warranty is to be issued for a Protected Roof Membrane B. [Shop drawings are required for Assembly system by Owens final inspection of the system. Corning. In any event it is in the Membrane manufacturer's shop owner’s and specifier’s best drawings are acceptable but must interest to determine that the include: waterproofing system has been properly installed. The purpose 1. Outline of roof and roof of the inspection is to verify that dimensions. installation is in accordance with 2. Location and type of all deck design specifications such as penetrations and equipment. adequate ballast gradation, rate of 3. Insulation type and thickness. coverage and areas covered. 4. Parapet height, if applicable.]

F. Each insulation board must be C. [Ballast Samples for Verification: labeled with manufacturer's name, Submit ballast samples showing product brand name, ASTM material all normal variation to be specification reference, and expected in the delivered identification of the third party product.] inspection agency used for building code qualification. Underwriters D. The contractor shall submit written Laboratories and Factory Mutual verification from the membrane certification documents and manufacturer that he/she is an Material Safety Data Sheets are authorized applicator. available from Owens Corning on request. E. The contractor shall submit written verification that the specifications for the waterproofing system are in

N-8 January 1998 accordance with the numbers as are appropriate. recommendations of the manufacturer. G. Membrane materials shall be properly stored off the ground and protected from the weather as 1.04 Product Delivery, Storage and recommended by their Handling manufacturer/supplier.

A. Deliver all materials in original H. All materials shall be protected from unopened packaging. handling or storage damage. Materials damaged in handling or B. Store insulation materials in a dry storage shall not be used without the area and protect from water and authorization of the direct sunlight. Damaged insulation manufacturer/supplier. materials shall not be used and shall be replaced. In the event the FOAMULAR insulation becomes 1.05 Job Conditions (Cautions and wet, the FOAMULAR insulation Warnings) can be wiped dry and then installed without harm to the A. Do not allow waste products FOAMULAR or the waterproofing (petroleum, grease, oil, solvents, system. vegetable or mineral oil, animal fat, etc.) or direct steam venting to come C. FOAMULAR insulation is in contact with the combustible, but contains a flame waterproofing/insulation/ballast retardant additive to inhibit system. Any atypical exposures accidental ignition from small fire must be presented to Owens sources. During shipping, storage, Corning or the membrane installation and use, this material manufacturer for assessment of should not be exposed to flame or impact on products. other ignition sources. B. The surface to be waterproofed shall D. All flammable materials shall be be free of ponded water, ice or stored in a cool, dry area away from snow. This precaution is to sparks and open flames. discourage potential future Precautions outlined on containers condensation on the underside of or provided by the the membrane. manufacturer/supplier shall be followed. C. Complete substrate construction, including work which will penetrate E. For proper fire protection of plastic waterproofing, before start of foam in storage, consult the National waterproofing application. Fire Protection Association (NFPA) standards or the authority having D. Comply with manufacturer's jurisdiction. recommendations regarding: condition of the substrate to receive F. Membrane packaging shall be waterproofing, insulation, and ballast clearly labeled with the system; weather conditions before manufacturer’s/supplier’s name, and during installation; and product name, and such identifying protection of the installed waterproofing/insulation/ballast

N-9 January 1998 system. made watertight the same day shall be removed. E. Do not expose FOAMULAR insulation to surfaces such as vent 1.06 Building Code Compliance stacks, pipes or other rooftop appurtenances whose constant The roof covering assembly and its temperature is in excess of 165°F. If individual components must comply temperature cycling conditions with all applicable building code are anticipated near the maximum requirements. Consult the local recommended use temperature building code for applicable consult your Owens Corning requirements regarding FOAMULAR representative for underdeck fire propagation, (UL recommendations regarding 1256/FM 4450), rooftop exterior system components. surface spread of flame or fire penetration, (ASTM E108), F. When insulation is to be exposed to structural fire resistance (ASTM the sun for prolonged periods due to E119), wind uplift resistance, or job site delays, protect the insulation other requirements if applicable. with a light colored opaque covering. Provisions should be made to 1.07 Warranty prevent wind loss of insulation materials at the job site when A. [The contractor shall be partially open units of FOAMULAR responsible for scheduling and are on hand. completing an inspection as required by Owens Corning to G. Install no more FOAMULAR obtain a Thermal Overlay insulation than can be covered with Warranty.] The Thermal Overlay [paving, stones, pavers, Warranty is optional. Contact protection] the same day. your Owens Corning FOAMULAR representative for full information. H. [Any deteriorated decking shall be See 1.02 B and 1.03 B. repaired or replaced. Existing roof drains must be verified to be B. A thermal performance warranty open and adequate to promote must be issued to the project owner proper roof drainage.] upon completion of the work. [Insulation must be warranted to I. Each day’s roofing work shall be retain a minimum of 90% of its completed in accordance with the published R value for 15 years.] manufacturer’s specifications and [A single source roof system recommendations. warranty must be issued to the project owner upon completion of J. When staging material on the roof the work.] Consult your Owens and during application, the Corning FOAMULAR contractor shall ensure that representative for information on overloading of the deck and obtaining warranties. Single structure does not occur. source full system warranties are available for certain waterproofing K. For projects requiring removal of the and paver systems. existing waterproofing system, only as much existing membrane and C. A waterproofing warranty may be insulation as can be replaced and available from the membrane

N-10 January 1998 manufacturer/supplier. Consult the section of this manual for manufacturer/supplier for duration of recommended in service terms. compressive stress load limits for FOAMULAR waterproofing D. System warranty shall cover, at a insulation. minimum, the following components of insulation, waterproofing, ballast B. Panel size: Provide rigid system: FOAMULAR insulation panels [thickness x width x length]. See 1. Waterproofing membrane the Physical Properties section of 2. Flashings, edge and penetration this manual for availability of detailing materials FOAMULAR above membrane 3. Protection sheet product sizes. 4. Insulation 5. Pavers and paver pedestals 2.02 Membrane

PART 2 – PRODUCTS The waterproofing membrane provided shall be as required by the manufacturer/supplier for the 2.01 Extruded Polystyrene intended application. Insulation

A. Physical Properties: FOAMULAR 2.03 [Separator Sheet] [404, 404RB, 604, 604RB, INSUL- DRAIN, FANFOLD], rigid closed-cell [Flexible glass fiber, nonwoven, foam panels with continuous as- non-flammable, corrosion and extruded skin on the face and back mildew resistant or other suitable surfaces, conforming to the separator (underlayment) sheets minimum physical requirements of shall be used over PVC ASTM C-578, Type [VI, VII]. See membranes and other such the Physical Properties section of membranes which contain this manual for FOAMULAR plasticizing agents. Separator product physical properties and sheet shall have been evaluated association with ASTM C578 type and approved by the membrane designations. No further manufacturer for adequacy as a specification of physical separator]. In all cases the properties is required if a membrane manufacturer's standard ASTM C578 type recommendation regarding designation is given. However, if insulation underlayment shall the specifier chooses to prevail. elaborate, it should be verified that the specified properties align with the chosen ASTM type 2.04 Protective Mat category. Contact your Owens Corning FOAMULAR The following fabrics are acceptable representative for more for use in a PRMA: Other fabrics information about the current may be used when their ASTM C578 material standard. respective manufacturers have published a recommendation for See the Physical Properties

N-11 January 1998 their successful performance as general, be applied to concrete part of a PRMA. substrates that slope to building drains, either by pitching the 1. Confil, black polyester weighing structural slab or by the addition of a 3 oz. per sq. yd. min. topping slab, as indicated. 2. Rufon P3B, black polypropylene Transition between top surface of weighing 3 oz. per sq. yd. min. waterproofing and pavers shall be 3. Rufon P5B, black polypropylene accomplished by use of “reverse weighing 5 oz. per sq. yd. min. tapered” insulation, by use of 4. DuPont Company of Canada, pedestal shims or by combination of Fabrene V.I.E., 2.5 oz. per sq. both. yd. min.

2.06 Paver Pedestals 2.05 Ballast [FOAMULAR 404RB, 604 RB] if All ballast shall be [rounded water needed for installation of concrete worn gravel, crushed stone, paver system smooth concrete pavers, structural concrete pour]. [Plastic pedestals must be UV Building height, parapet height, stable, resistant to freeze-thaw and project wind zone are major cycling and designed to align and factors when specifying a level concrete pavers.] minimum ballast requirement. Design of ballasted systems [Provide FOAMULAR [404RB, should be accomplished in 604RB] as a top layer over base accordance with ANSI/RMA/SPRI layers of FOAMULAR described in RP-4, Wind Design Guide for Section 2.01 A.] Ballasted Single-Ply Roofing Systems. [Gravel or crushed Paver pedestals may be preferred stone ballast shall conform to over other methods of setting ASTM D448, size [#3, #24, #2, #1.] pavers such as into a sand or gravel bed. Pedestals promote [Concrete pavers must have a drainage and thereby discourage compressive strength equal to wash out of the setting medium [___ psi] or greater, maximum and freeze-thaw degradation of water absorption rate of [___% by the paver as may occur if the volume], and dimensions, not paver is placed directly onto a exceeding [______]. Paver setting bed. If paver leveling is weight must be manageable for not required, FOAMULAR 404RB removal and replacement and 604RB are designed to purposes. Concrete quality must enhance drainage beneath pavers be suitable for weathering and eliminate the need for a conditions to which it will be drainage medium. subjected. Paver weight must conform to the wind design [Adjustable paver pedestal standard cited above. system], designed to support anticipated live and dead loads, to Top of pavers shall be dead level, control alignment and joint spacing except as otherwise indicated. of pavers and to accommodate Waterproofing membrane shall, in slope of subsurfaces to create a

N-12 January 1998 smooth, uniform, non-slip surface for 2.08 Related Materials paver installation. Provide products supplied by and recommended by A. Flashing membrane joint manufacturer’s group. B. Asphalt: ASTM D 312 “Specification For Asphalt Used In Roofing” 2.07 Drainage Course C. Adhesives, Sealants, Mastics [Pea gravel, Sand] A three inch layer of sand or pea gravel placed D. Primers between the structural cast-in- place concrete topping slab and E. Prefabricated Flashings the insulation will promote drainage away from the bottom of F. Sheet Metal: [aluminum, galvanized the concrete. steel, stainless steel, copper]

G. Sheet Metal Fasteners: Nails or screws compatible with sheet metal and substrate.

H. Wood Nailers: # 2 or better lumber, pressure treated for rot resistance.

PART 3 – EXECUTION

3.01 Pre-Job Requirements

A. [The primary contractor shall conduct a pre-waterproofing conference before any work begins, so all parties involved in the waterproofing system construction, or who may work on or make penetrations through the waterproofing system, understand their obligations with respect to the waterproofing system.]

B. [Minimum slope shall be sufficient to permit positive drainage. The manufacturer/supplier shall be consulted for specific slope limitations.]

3.02 Roof Deck Criteria

N-13 January 1998 A. The deck shall be constructed to areas. drain completely free of water within 48 hours following rainfall. 2. Verify that form release agents and methods and materials used B. [Parapets, gravelstops] must be to cure concrete surfaces are constructed to extend above the top compatible with waterproofing surface of the [ballast, pavers]. products and waterproofing membrane manufacturer's C. The dead load carrying capability of recommendations. the deck must be sufficient to support code mandated live loads 3. Verify that surfaces are smooth, and dead loads incident on the roof sound, clean, and dry, and that including the entire roof covering, components which will penetrate insulation and ballast system. waterproofing are complete and rigidly installed.

3.03 Substrate/Roof Deck F. [Install wood nailers as shown on Preparation construction drawings for edge, curb and other roof accessories.] A. Inspect substrates and conditions See Factory Mutual System Loss under which the work of this section Prevention Data 1 -49 which will be performed, and verify that provides recommendations for installation may properly commence. edge detail design and Do not proceed with the work until securement. unsatisfactory conditions have been resolved per waterproofing membrane manufacturer’s 3.04 Waterproofing Membrane recommendations. A. Complete substrate construction, B. Surfaces on which the waterproofing including work which will penetrate membrane system is to be applied waterproofing, before start of shall be compatible, clean, and waterproofing application. smooth. Surfaces should be free of fins, sharp edges, loose and foreign B. Comply with manufacturer's materials, oil and grease, blisters, or recommendations regarding other surface irregularities. condition of the substrate to receive waterproofing/paving system, C. Where required, the substrate shall weather conditions before and be primed and allowed to dry. during installation, and protection of the installed D. [Any deteriorated decking shall be waterproofing/insulation, ballast repaired or replaced] A thorough system. inspection should be required in the case of total tear off. C. Begin waterproofing membrane installation at the low point of the E. [Concrete Decking:] roofing project area such that the direction of water flow is not against 1. Patch as required honeycomb, or any laps. aggregate pockets. Remove fins, ridges, and projecting rough D. The membrane shall be installed to fit neatly around penetrations and

N-14 January 1998 roof projections without the joint laps. The roofing/water - formation of “backwater laps.” proofing membrane, present on the warm side of the insulation in E. The waterproofing membrane a PRMA system functions as a surface to be insulated shall be vapor retarder. The thermal inspected [by the Architect, the resistance above the membrane waterproofing manufacturer's and the thermal resistance below representative, or other designee] the membrane must be balanced for satisfactory completion before to discourage condensation on applying FOAMULAR. This the underside of the membrane. inspection is necessary to insure When environmental conditions that all splices, field seams and create a condensation point any lap/seam treatment have been within the insulation board under completed, that all flashing has the membrane, it may be been installed, and that all necessary to install a vapor membrane terminations have retarder between the layer of been completed before being below membrane insulation and covered and becoming relatively the roof deck. FOAMULAR is inaccessible. compatible with most commonly used asphaltic and sheet film F. The membrane surface over which vapor retarding materials. See the PRMA insulation is to be applied the American Society of Heating, shall be free of debris and relatively Refrigerating and Air Conditioning even. Engineers (ASHRAE) Handbook of Fundamentals for specific design G. Install layer of protection sheet over guidelines. membrane as soon as practicable after membrane installation to avoid damage to membrane from sunlight 3.06 Insulation and subsequent operations. A. Total waterproofing insulation aged H. [Flood test complete membrane thermal resistance shall be [R___], before placement of protection achieved in the thicknesses and sheet, insulation, or paving. Plug number of layers as shown in the or dam drains and fill area with construction documents. R -value water to a depth of 2 inches or to chosen is to be specified based within 1/2 inch of top of flashings; on the intended use of each let stand for 24 hours. If leaks are project and design criteria of each discovered, repair and retest until project, and applicable energy no leaks are observed.] Before conservation codes. Contact specifying, verify that structural your Owens Corning FOAMULAR system is capable of withstanding representative for information the load of a flood test. regarding ASHRAE 90.1 energy code minimum requirements for roof/waterproofing insulation if 3.05 Vapor Retarder needed.

Install a vapor retarder in B. Apply only as much FOAMULAR accordance with construction waterproofing insulation as can be drawings. Place the vapor retarder covered by the protective mat and to insure adequate end and side

N-15 January 1998 ballast on the same day. work their way down to the membrane level presenting a C. Place insulation directly on the puncture hazard. It also limits the membrane with the [channel side flotation of an individual board down, rib side up]. Apply roof during periods when the insulation in parallel rows with end membrane surface is flooded. joints staggered. Install side and Fabric is required between the end joints closely but do not force insulation and ballast if stone together. Install to within 3/4 inch of ballast is used. Fabric is all projections and cant strips. recommended for use under pavers. D. [In a multiple layer application, apply panels parallel to the B. Overlap all fabric edges a minimum preceding layer but with side and of 12". Extend the fabric 2 to 3 end joints staggered in relation to inches above the ballast at the roof the preceding layer.] In multiple perimeter and penetrations. The layer applications FOAMULAR fabric shall be extended to the base 404 or 604 can be placed as a of drain bonnets, but shall not cover bottom, membrane level, drainage the drain or restrict flow to the drain. layer with upper layers completed using 400 or 600. C. Additional fabric shall be installed around penetrations to prevent fine E. [Insulation placed over hot fluid, grade stone ballast from entering the BUR or other systems to which space between the penetration and the PRMA insulation may adhere the insulation. Wetting the shall be separated from the protective mat fabric helps hold it membrane by a non-degradable in place over the insulation as the sheet as recommended by the ballast is installed. It is also membrane manufacturer that will helpful to install the fabric so that prevent the insulation from the wind direction is with the laps bonding to the membrane.] rather than against the laps. [PRMA insulation placed over Immediately following the chemically incompatible application of the fabric it is membrane systems such as coal necessary to install the stone or tar or PVC shall be separated gravel ballast. Particularly on from the membrane by a windy days, the stone should be separator sheet as recommended installed soon after the fabric in by the membrane manufacturer.] order to help prevent blow-off of unballasted fabric and insulation.

3.07 Protective Mat 3.08 Ballast A. Install protective mat fabric over the FOAMULAR layers, perpendicular to Before specifying a PRMA system, it the long dimension of the insulation must be determined that the ballast boards. The fabric shall be dead load required will not exceed unadhered and unattached. The the dead load limits of the structure. protective mat acts as a sieve layer preventing the penetration A. Ballasting Requirements: Weight of of fine grade stone ballast into ballast installed must be sufficient to insulation board joints which may provide protection against wind uplift

N-16 January 1998 pressure. The necessary weight per around equipment, it is not square foot, gradation and necessary to elevate the pavers application surface areas shall be above the surface of the determined in accordance with insulation due to the limited areas ANSI/RMA/SPRI RP-4, Wind Design involved. Guide for Ballasted Single-Ply Roofing Systems. 3.09 Roof Walkways Protect membrane and place ballast in accordance with building Specify if regular maintenance is parameters and the required to service rooftop units ANSI/RMA/SPRI/RP-4 document. or if a passageway over the surface is otherwise required. B. [Stone ballast gradation and Well defined walkways shall be quantity installed (i.e., depth) provided, constructed of materials must be adequate to completely such as rubber matting, concrete cover the protective mat.] pavers or other materials approved Insulation thickness does not by the roofing membrane affect the amount of ballast manufacturer. required. Should access to the C. [Concrete paver ballast must be waterproofing membrane be installed so that the pavers are required for repairs or warranty elevated above the surface of the service, the ballast, protective mat foam by integrally cast feet on the and insulation layers must be paver (not conducive to paver removed. Rooftop equipment, leveling), pedestals at the paver landscaping, window washing corners, or by a permeable setting systems, or intricately placed or bed beneath the pavers.] See multicolored ballast Section 2.06 & 2.07. When pavers configurations may complicate cover only minor portions of the access and service to the roof such as at windscrub membrane. locations or walkways to and

N-17 January 1998