CENTRIA Concept Series Metal Wall Rainscreen Panel + MetalWrap™ Insulated Composite Backup Panel System
CENTRIA Concept Series™ Metal Wall Panels are a versatile design choice for wall cladding panels. They are manufactured with a variety of profiles, metal substrates, and surface treatments, and are available in over 60 standard colors plus custom colors. Panels are available as hot-dip galvanized, Galvalume®, or Galvalume Plus® coated steel; aluminum and stainless steel panels are available.
CENTRIA Concept Series Wall Panels coated with CENTRIA's own Fluorofinish® Kynar 500®/Hylar 5000®- based fluoropolymer or Versacor Ultra® corrosion- and abrasion- resistant finishes will last for decades. Highly UV resistant are durable in the face of chemical and air borne pollution, salt spray and wind-driven sand. CENTRIA coatings set the standard for the industry.
Stand-off clips for CENTRIA Metal Wall Panels create a vented cavity allowing a drainage plane to form behind the panels; the tight engagement of the clips and their extra thickness provide added resistance to deformation and disengagement – providing a long-life installation. Panels are also available with a factory-installed sealant in the side joint for a weather tight barrier installation.
CENTRIA Microline extrusions offer the designer an integrated trim system that ensures aesthetic control over the profile of visual components of the wall assembly. CENTRIA MicroSeam mitered trimless corners accentuate horizontal lines. Available Profile Louvers match certain metal wall panel profiles and finishes.
CENTRIA MetalWrap Insulated Composite Backup Panel System is designed to be used with uninsulated CENTRIA metal wall panels to create a complete wall system solution. The unique composite design of MetalWrap provides an air barrier, moisture barrier, and thermal insulation with total wall values up to R-21 in a single, easy-to-install component that serves as a substrate for the application of a wide variety of CENTRIA metal panels. MetalWrap eliminates the need for separate batt or board insulation, exterior gypsum board sheathing, air barriers, vapor retarders, and building wraps, while providing better thermal efficiency and moisture control for exterior metal-clad walls.
MetalWrap is designed for use with vertical or horizontal CENTRIA exterior metal panels, including Profile Products and FormaBond. MetalWrap was developed using ATMP® - CENTRIA's Advanced Thermal and Moisture Protection building envelope science; it maximizes a metal wall system's ability to effectively control moisture without sacrificing thermal efficiency. Metal panel wall systems utilizing MetalWrap with steel stud construction and interior gypsum board finish are available with overall wall thermal resistance of R-14 (for 2-inch thick MetalWrap) and R-21 (for 3-inch thick MetalWrap).
CENTRIA is a world leader in the manufacture of metal building products and systems for nonresidential walls and roofs. CENTRIA is also a world-class coil coater, providing a wide range of coated products for customers in numerous industries. Consult your local CENTRIA architectural representative for design assistance. Contact CENTRIA, Pittsburgh, PA, (800)759-7474, Email: [email protected], www.centria.com for a list of local offices.
CENTRIA products appear in the following MasterFormat sections: ● Section 07 41 13 – Metal Roof Panels (SRS2, SRS3)
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 1 of 19 ● Section 07 41 16 – Insulated Core Metal Roof Panels (Versapanel) ● Section 07 42 13 – Metal Wall Panels (Concept Series, IW Series, Exposed Fastener Panels, EcoScreen Perforated Screenwall) ● Section 07 42 16 – Insulated-Core Metal Wall Panels (Formawall Dimension Series, Formawall Graphics Series, Versawall, Versapanel) ● Section 07 42 17 – Insulated Composite Backup Panel (MetalWrap) ● Section 07 42 43 – Composite Wall Panels (FormaBond)
Specifier: This document is organized according to CSI MasterFormat™ 2012 and SectionFormat™ 2010. Edit section number and title as appropriate to the Project. Bold items require specifier selection. Convert bold to plain text and delete notes before publishing. This document is compatible with certain commercial specification editing software. Several CENTRIA specifications sections are also available in non-proprietary Federal SpecsIntact formats.
Concept Series™ and MetalWrap™ are trademarks of CENTRIA, Inc ATMP® is a registered trademark of CENTRIA. MasterFormat™ and SectionFormat™ are trademarks of the Construction Specifications Institute. This document is Copyright© 2013 CENTRIA. All rights reserved.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 2 of 19 SECTION 07 42 13.05
METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM
PART 1 - GENERAL
0.1 SECTION INCLUDES
A. Concealed-fastener metal wall rainscreen panels installed over insulated metal wall backup panels providing thermal, air, water, and water vapor control.
0.2 RELATED REQUIREMENTS
Specifier: Edit list below to correspond to Project.
A. Division 01 Section "Sustainable Design Requirements" for related LEED general requirements.
B. Division 05 Section "Cold-Formed Metal Framing" for support framing for metal wall backup panels.
C. Division 07 air barrier section for transition components to building air barrier at perimeter of metal wall backup panels.
D. Division 07 Section "Sheet Metal Flashing and Trim" for metal flashing components at openings and perimeter.
E. Division 07 Section "Joint Sealants" for field-applied joint sealants.
F. Division 13 Section "Metal Building Systems" for support framing for metal wall backup panels.
0.3 REFERENCE STANDARDS
A. Reference Standard Editions: Comply with requirements of specified standards edition cited in applicable building code, or if not cited in code, with requirements of edition current at time of issuing of specifications
Specifier: If retaining this optional article, edit list below to correspond to Project.
B. American Architectural Manufacturer's Association (AAMA): www.aamanet.org:
1. AAMA 621 - Voluntary Specification for High Performance Organic Coatings on Coil Coated Architectural Hot Dipped Galvanized (HDG) and Zinc-Aluminum Coated Steel Substrates 2. AAMA 809.2 - Voluntary Specification Non-Drying Sealants 3. AAMA 2605 - Voluntary Specification, Performance Requirements and Test Procedures for Superior Performaing Organic Coatings on Aluminum Extrusions and Panels
C. American Iron and Steel Institute (AISI): www.steel.org:
1. Standard for Cold-Formed Steel Framing - General Provisions
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 3 of 19 D. American Society of Civil Engineers (ASCE): www.asce.org/codes-standards:
1. ASCE 7 - Minimum Design Loads for Buildings and Other Structures
E. ASTM International (ASTM): www.astm.org:
1. ASTM A653/A653M - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process 2. ASTM A666 - Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar 3. ASTM A755/A755M - Specification for Steel Sheet, Metallic Coated by the Hot-Dip Process and Prepainted by the Coil-Coating Process for Exterior Exposed Building Products. 4. ASTM A792/A792M - Standard Specification for Steel Sheet, 55% Aluminum-Zinc Alloy- Coated by the Hot-Dip Process. 5. ASTM B209 - Specification for Aluminum and Aluminum Alloy Sheet and Plate. 6. ASTM C920 - Standard Specification for Elastomeric Joint Sealants. 7. ASTM C1007 - Standard Specification for Installation of Load Bearing (Transverse and Axial) Steel Studs and Related Accessories. 8. ASTM C1363 - Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus. 9. ASTM E72 - Test Methods of Conducting Strength Tests of Panels for Building Construction 10. ASTM E84 - Test Methods for Surface Burning Characteristics of Building Materials. 11. ASTM E283 - Test Method for Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors under Specified Pressure Differences across the Specimen. 12. ASTM E331 - Test Method for Water Penetration of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.
F. FM Global (FM): www.fmglobal.com:
Specifier: Retain FM classification in subparagraph below when required for project utilizing CENTRIA MetalWrap panels with 0.019 inch/26 gage (0.48 mm) face and liner.
1. ANSI/FM 4880 - Class 1 Fire Rating of Insulated Wall or Wall and Roof/Ceiling Panels, Interior Finish Materials or Coatings, and Exterior Wall Systems.
G. National Fire Protection Association (NFPA): www.nfpa.org:
1. NFPA 285 - Standard Fire Test Method for Evaluation of Fire Propagation Characteristics of Exterior Non-Load-Bearing Wall Assemblies Containing Combustible Components
H. Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA):
1. Architectural Sheet Metal Manual
I. Underwriters Laboratories, Inc. (UL): www.ul.com:
1. UL 723 - Test for Surface Burning Characteristics of Building Materials
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 4 of 19 0.4 QUALITY ASSURANCE
Specifier: If project procurement procedures allow retaining manufacturer and product name in Part 2, retain paragraph and subparagraphs below to establish project procedures for evaluation of substitution requests.
A. Manufacturer Qualifications: Manufacturer listed in this Section or approved for Project with minimum 5 years experience in manufacture of similar products in successful use in similar applications.
1. Approval of Comparable Products: Submit the following in accordance with project substitution requirements, within time period allowed for substitution review:
a. Product data, including certified independent test data indicating compliance with requirements. b. Load span tables including evaluation of panel clip and panel side joint interaction. c. Samples of each component. d. Sample submittal from similar project. e. Project references: Minimum of 5 installations not less than 5 years old, with owner contact information. f. Sample warranty.
2. Substitutions following award of contract are not allowed except as stipulated in Division 01 General Requirements. 3. Approved manufacturers must meet separate requirements of Submittals Article.
B. Installer Qualifications: Experienced Installer with minimum of 5 successful completed projects of similar materials and scope and employing workers trained by manufacturer to install products of this section.
Specifier: Retain "Buy American Act Certification" when required by project; coordinate with requirements in Submittals article.
C. Buy American Act Certification: Comply with provisions of the Buy American Act 41 U.S.C 10a – 10d.
0.5 ADMINISTRATIVE REQUIREMENTS
A. Coordination: Coordinate the installation of metal wall backup panel system structural support and exterior metal wall panels.
B. Preinstallation Meeting: Conduct preinstallation meeting at site attended by Owner, Architect, manufacturer's technical representative, and other trade contractors.
1. Coordinate building framing in relation to metal wall panels. 2. Coordinate window, door, and other openings and penetrations of metal wall backup panels.
0.6 ACTION SUBMITTALS
A. Product Data: Manufacturer’s data sheets for metal wall panels and accessories.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 5 of 19 Specifier: Retain and edit below to comply with Project requirements for LEED or other sustainable design requirements.
B. LEED Submittals:
1. Credit MR 4: Product data indicating the following:
a. Percentages by weight of post-consumer and pre-consumer recycled content. b. Total weight of products provided.
C. Shop Drawings: Prepared by manufacturer or manufacturer's authorized dealer. Installation drawings for metal wall panels and metal wall backup panels, flashing, accessories, and anchorage systems. Indicate dimensioned structural frame and erection layouts, openings in walls, special framing details, and construction details at corners, building intersections and flashing, location and type of mastic and metal filler strips. 1. Indicate coordination dimensions related to structural support system elements provided by others. 2. Indicate details of fastening, including clip spacing, supported by load span tables that include an evaluation of clip and panel side joint interaction. 3. Include structural data indicating compliance with performance requirements.
D. Samples for Verification: Provide minimum 10-inch (250-mm) square section of metal wall backup panel showing finishes, interlocking joint, insulated core, and anchorage detail.
0.7 INFORMATIONAL SUBMITTALS
A. Product Test Reports: Indicating compliance of products with requirements, from a qualified independent testing agency.
B. Qualification Information: For Installer firm, Installer’s field supervisor.
Specifier: Retain "Dade County Approval" paragraph below when authorities having jurisdiction require certification of high wind design compliance.
A. Dade County Approval: Miami-Dade County Notice of Acceptance (NOA).
B. Manufacturer's warranty: Submit sample warranty.
Specifier: Retain "Buy American Act Certification" when required by project; coordinate with requirements in Submittals article.
C. Buy American Act certification.
0.8 CLOSEOUT SUBMITTALS
A. Maintenance data.
0.9 DELIVERY, STORAGE, AND HANDLING
A. Protect metal wall backup panels during shipping, handling, and storage to prevent staining, denting, or other visible damage. Deliver, unload, store, and erect metal wall backup panels and accessory items without misshaping panels or exposing panels to surface damage from weather or construction operations. Protect from exposure to sunlight.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 6 of 19 0.10 WARRANTY
Specifier: Retain first "Special Manufacturer's Warranty" paragraph below when specifying CENTRIA MetalWrap panels in conjunction with CENTRIA metal wall panels as a combined cladding and backup system.
A. Special Manufacturer’s Warranty: On manufacturer’s standard form, in which manufacturer agrees to repair or replace components of metal wall panel assemblies that fail in materials and workmanship within [two] years from date of Substantial Completion.
Specifier: Consult CENTRIA representative to verify available finish warranty.
A. Special Panel Finish Warranty: On manufacturer’s standard form, in which manufacturer agrees to repair or replace metal wall panels that evidence deterioration of finish within the following periods from the date of substantial completion:
1. Warranty Period: 20 years.
PART 2 - PRODUCTS
Specifier: If project procurement procedures allow retaining manufacturer and product name, retain paragraph and subparagraphs below and modify as required.
0.1 MANUFACTURERS
A. Basis of Design: CENTRIA, Concept Series Metal Wall Panels with MetalWrap Backup Panels. Provide basis of design products [or comparable products of other manufacturer approved by Architect in accordance with Instructions to Bidders and Division 01 General Requirements].
1. CENTRIA Architectural Systems; Moon Township PA 15108-2944; (800)759-7474; (412)299-8000; [email protected]; www.CENTRIA.com.
B. Single Source: Obtain metal wall backup panels and exterior cladding panels through one source from a single approved manufacturer.
0.2 PERFORMANCE REQUIREMENTS
A. General: Provide metal wall panel assemblies including backup panel system meeting the performance requirements of this Article as determined by a qualified testing agency’s application of specified tests on manufacturer’s standard assemblies.
Specifier: Retain "Recycled Content of Steel Sheet" paragraph when required by LEED or general sustainable design requirements of project.
B. Recycled Content of Steel Sheet: Postconsumer recycled content plus one-half of preconsumer recycled content not less than 25 percent.
C. Structural Performance: Provide metal wall backup panel system fabricated to withstand effects of indicated loads and stresses within limits and under conditions indicated, when tested per ASTM E72.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 7 of 19 Specifier: Consult Project structural engineer and edit below as required by local codes.
1. Wind Load Test: Determine loads based on uniform pressure indicated on the drawings. 2. Deflection Limits Test: Withstand test pressures of 150 percent of inward and outward wind-load design pressures with maximum deflection of 1/120 of the span with no evidence of failure. 3. Seismic Performance Test: Comply with ASCE 7, "Minimum Design Loads for Buildings and Other Structures": Section 9, "Earthquake Loads."
Specifier: Retain paragraph below if secondary metal framing is included in work of this Section. 4. Secondary Metal Framing: Design secondary metal framing for metal wall panel assembly according to AISI's "Standard for Cold-Formed Steel Framing - General Provisions."
Specifier: "Air Infiltration Test," "Water Penetration Test," and "Thermal Performance Test" Paragraphs reflect the superior envelope performance available on rainscreen applications utilizing CENTRIA MetalWrap as a substrate.
D. Air Infiltration Test: Maximum 0.01 cfm/sq. ft. (0.05 L/s per sq. m) per ASTM E283 at a static- air-pressure difference of 6.24 lbf/sq. ft. (300 Pa).
E. Water Penetration Test: No uncontrolled water penetration at a static pressure of 15 lbf/sq. ft. (0.7 kPa) per ASTM E331.
F. Thermal Performance Test: Thermal Resistance (R-value) indicated, per ASTM C1363, corrected to 15 mph (24.1 k/h) outside and still air inside, as-installed condition including fastening and joints.
Specifier: For horizontal applications, and other applications where thermal movement is an issue, retain the requirements below. Retain clip fasteners in Part 2.
G. Thermal Movements: Allow for thermal movements from variations in both ambient and internal temperatures. Accommodate movement of support structure caused by thermal expansion and contraction.
Specifier: Metal cladding on CENTRIA MetalWrap panels meets requirements for thermal protection of foam plastics in IBC Chapter 26.
H. Fire-Test-Response Characteristics: Provide metal wall backup panel system with the following fire-test-response characteristics determined by the indicated test standard as applied by UL or other testing and inspection agency acceptable to authorities having jurisdiction.
1. Surface Burning Characteristics: Not greater than the following, per ASTM E84 or UL Standard 723, for foam core and interior surface:
a. Flame spread index: 25 or less. b. Smoke developed index: 450 or less.
Specifier: Retain "Intermediate Scale Multistory Fire Test" Paragraph when required by authorities having jurisdiction.
2. Intermediate Scale Multistory Fire Test: Representative mockup tested per NFPA 285.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 8 of 19 Specifier: Retain "Fire Performance of Insulated Wall" subparagraph when required by Owner's insurer; retain requirement for 26 ga. panel faces in Part 2. 3. Fire Performance of Insulated Wall: Approved as Class 1 wall panel per ANSI/FM 4880.
0.3 SYSTEM DESCRIPTION
A. Rainscreen Metal Wall Panels with Insulated-Core Metal Wall Backup Panel System: Single-skin formed metal wall panels with metal wall backup panel installation consisting of foamed- insulation-core metal-skinned backup panels, attached to metal framing with specified clips, serving as combined thermal, air, and moisture barrier.
0.4 CONCEALED FASTENER METAL WALL PANELS
Specifier: All CENTRIA Concept Series concealed fastener metal wall panels are suitable for horizontal and vertical installation. Panels are manufactured with a common lock joint design that permits the integration of multiple profiles in one system. Stand-off clips provide a ventilated cavity and a drain plane behind panels when required. Standard lengths are 5 to 30 feet; custom length panels are available on special order.
Specify optional factory-applied sealant in vertical panel side laps when added water resistance is required. CENTRIA recommends a complete water-resistant barrier behind horizontal panels. Concept Series panels without added joint sealants function as pressure-equalized rainscreen cladding.
For vertical panel and soffit applications and other applications where thermal movement is of minimum concern, Concept Series profiles may be specified with an extended fastener leg for concealed and clipless attachment. This is designated by adding an "E" to the profile name, as shown below.
If using more than one metal wall panel, retain the drawing designation below for each panel. If metal types, thicknesses, surfaces, or finish systems differ, add notes below to indicate the metal type, thickness, surface, and finish for each panel on project.
A. Metal Wall Panels, General: Factory-formed, concealed fastener panels with interconnecting side joints, fastened to supports with concealed fasteners, with factory-applied sealant in side laps when required to meet performance requirements.
Specifier: CENTRIA 200 Series Metal Wall Panels are manufactured in 12 inch widths and are available in standard panel lengths from 5 foot (1524 mm) to 30 foot (9144 mm). Custom length panels are available on special order.
B. Reveal-joint profile with raised flat pan MWP#___:
1. Basis of Design Product: CENTRIA, CS-200. 2. Panel Coverage: 12 inches (305 mm). 3. Panel Thickness: 0.875 inch (22 mm).
C. Reveal-joint profile with raised flat pan and concealed extended fastener leg MWP#___:
1. Basis of Design Product: CENTRIA, CS-200E. 2. Panel Coverage: 12 inches (305 mm). 3. Panel Thickness: 0.875 inch (22 mm).
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 9 of 19 D. Double-reveal profile with raised flat pan and rib MWP#___:
1. Basis of Design Product: CENTRIA, CS-210. 2. Panel Coverage: 12 inches (305 mm). 3. Panel Thickness: 0.875 inch (22 mm).
E. Double-reveal profile with raised flat pan and rib, with concealed extended fastener leg MWP#___:
1. Basis of Design Product: CENTRIA, CS-210E. 2. Panel Coverage: 12 inches (305 mm). 3. Panel Thickness: 0.875 inch (22 mm).
F. Three-rib Profile MWP#___:
1. Basis of Design Product: CENTRIA, CS-260. 2. Panel Coverage: 12 inches (305 mm). 3. Panel Thickness: 0.875 inch (22 mm).
G. Three-rib profile with concealed extended fastener leg MWP#___:
1. Basis of Design Product: CENTRIA, CS-260E. 2. Panel Coverage: 12 inches (305 mm). 3. Panel Thickness: 0.875 inch (22 mm).
Specifier: CENTRIA 600 Series Metal Wall Panels are manufactured in 16 inch widths.
H. Double-reveal profile with raised flat pan and rib MWP#___:
1. Basis of Design Product: CENTRIA, CS-610. 2. Panel Coverage: 16 inches (406 mm). 3. Panel Thickness: 0.875 inch (22 mm).
I. Double-reveal profile with raised flat pan and rib, with concealed extended fastener leg MWP#___:
1. Basis of Design Product: CENTRIA, CS-610E. 2. Panel Coverage: 16 inches (406 mm). 3. Panel Thickness: 0.875 inch (22 mm).
J. Double-reveal profile with evenly-spaced raised flat pan between reveals MWP#___:
1. Basis of Design Product: CENTRIA, CS-620. 2. Panel Coverage: 16 inches (406 mm). 3. Panel Thickness: 0.875 inch (22 mm).
K. Double-reveal profile with evenly-spaced raised flat pan between reveals and concealed extended fastener leg MWP#___:
1. Basis of Design Product: CENTRIA, CS-620E. 2. Panel Coverage: 16 inches (406 mm). 3. Panel Thickness: 0.875 inch (22 mm).
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 10 of 19 L. Four-rib profile with recessed flat pan between ribs MWP#___:
1. Basis of Design Product: CENTRIA, CS-660. 2. Panel Coverage: 16 inches (406 mm). 3. Panel Thickness: 0.875 inch (22 mm).
M. Four-rib profile with recessed flat pan between ribs and concealed extended fastener leg MWP#___:
1. Basis of Design Product: CENTRIA, CS-660E. 2. Panel Coverage: 16 inches (406 mm). 3. Panel Thickness: 0.875 inch (22 mm).
0.5 METAL WALL PANEL MATERIALS
Specifier: Select metal wall panel face material from three paragraphs below: Galvanized, Aluminum-zinc alloy-coated steel sheet (Galvalume), Aluminum, or Stainless-steel. Consult CENTRIA representative for recommendations.
A. Metallic-Coated Steel Face Sheet: Coil-coated, ASTM A755/A755M.
1. Zinc-Coated (Galvanized) Steel Sheet: ASTM A653/A653M, G90 (Class Z275), structural steel quality. 2. Aluminum-zinc alloy-coated Steel Sheet: ASTM A792/A792 M, Class AZ50 Grade 50 (Class AZM150, Grade 275), structural steel quality.
Specifier: Select required metal face sheet thickness from options below. 0.024 inch/24 gage (0.60 mm) thickness is available in CENTRIA CS-260/260E and CS 660/660E panels only. 3. Face Sheet: Minimum [0.024 inch/24 gage (0.60 mm)] [0.030 inch/22 gage (0.76 mm)] [0.036 inch/20 gage (0.91 mm)] [0.047 inch/18 gage (1.19 mm)] nominal uncoated thickness. 4. Surface: [Smooth] [Non-Directional Embossed].
B. Aluminum Face Sheet: Smooth surface coil-coated, ASTM B209, 3003-H14 or 5052-H32 alloy.
Specifier: Select required metal face sheet thickness from options below. 0.032 inch thickness is available in CENTRIA CS-260/260E and CS 660/660E panels.
1. Face Sheet: [0.032 inch (0.8 mm)] [0.040 inch (1.0 mm)] [0.050 inch (1.27 mm)] nominal thickness. 2. Surface: [Smooth] [Non-Directional Embossed].
Specifier: Retain and edit subparagraph below for projects that include requirements for use of recycled content in products. Verify proportion of recycled content with manufacturer. 3. Aluminum Products Recycled Content: Average of postconsumer recycled content plus one-half of preconsumer recycled content not less than 50 percent.
C. Stainless-Steel Face Sheet: ASTM A666, architectural grade alloy type as indicated.
Specifier: Select required metal face sheet thickness from options below. 0.024 inch/24 gage (0.60 mm) thickness is available in CENTRIA CS-260/260E and CS 660/660E panels.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 11 of 19 1. Face Sheet: [0.024 inch/24 gage (0.60 mm)] [0.030 inch/22 gage (0.76 mm)] [0.036 inch/20 gage (0.91 mm)], nominal thickness.
Specifier: Type 316 alloy is recommended for marine and other corrosive environments. 2. Finish: [Type 304, bright, non-directional polish, No. 2B] [Type 316, bright, non- directional polish, No. 2B].
0.6 METAL WALL PANEL FINISHES
Specifier: Select metallic-coated steel face sheet or aluminum face sheet finish system from options below. AAMA 2605 is aluminum sheet finish standard; AAMA 621 is metallic-coated steel sheet finish standard. Delete all finish options if specifying stainless steel face sheet.
A. Exposed Coil-Coated Finish System:
1. Fluoropolymer Two-Coat System: 0.2-mil primer with 0.8-mil 70 percent PVDF fluoropolymer color coat, AAMA [2605] [621].
a. Basis of Design: CENTRIA Fluorofinish.
2. Fluoropolymer Two-Coat System: 0.8 mil primer with 0.8 mil 70 percent PVDF fluoropolymer color coat, AAMA [2605] [621].
a. Basis of Design: CENTRIA Duragard.
3. Fluoropolymer Three-Coat System: 0.8 mil primer with 0.8 mil 70 percent PVDF fluoropolymer color coat, and a 0.8 mil 70 percent PVDF fluoropolymer clear coat, AAMA [2605] [621].
a. Basis of Design: CENTRIA Duragard Plus.
4. Fluoropolymer Two-Coat Mica System: 0.25-mil primer with 0.8-mil 70 percent PVDF fluoropolymer color coat providing a pearlescent appearance, AAMA [2605] [621].
a. Basis of Design: CENTRIA Sundance Mica.
5. Fluoropolymer Three-Coat Metallic System: 0.2 mil primer with 0.8-mil 70 percent PVDF fluoropolymer color coat containing metal flakes, and a 0.5-mil 70 percent PVDF fluoropolymer clear coat, AAMA [2605] [621].
a. Basis of Design: CENTRIA Sundance AM.
Specifier: The three CENTRIA Versacor systems below are recommended for corrosive and abusive environments. Select system and one of three options for panel interior finish based on exposure and environmental conditions. Consult CENTRIA representative for recommended finish system.
6. Fluoropolymer Two-Coat Corrosion and Abrasion Resistant System: 3.0 mil primer with 0.8 mil 70 percent PVDF fluoropolymer color coat
a. Interior Finish: [3.0 mil primer and wash coat topcoat] [3.0 mil primer and polyester topcoat] [3.0 mil primer and urethane topcoat]. b. Basis of Design: CENTRIA Versacor Ultra PF.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 12 of 19 7. Urethane Two-Coat Corrosion and Abrasion Resistant System: 3.0 mil primer with 1.5 mil urethane color coat.
a. Interior Finish: [3.0 mil primer and wash coat topcoat] [3.0 mil primer and polyester topcoat] [3.0 mil primer and urethane topcoat]. b. Basis of Design: CENTRIA Versacor Ultra TF.
8. Urethane Two-Coat Plus Corrosion and Abrasion Resistant System: 3.0 mil primer with 3.0 mil urethane color coat.
a. Interior Finish: [3.0 mil primer and wash coat topcoat] [3.0 mil primer and polyester topcoat] [3.0 mil primer and urethane topcoat]. b. Basis of Design: CENTRIA Versacor Ultra HF.
B. Color:
Specifier: Retain one or both subparagraphs below has required for Project.
1. Exterior Surface: [As indicated] [As selected by Architect from manufacturer's standard colors] [Match Architect's custom color]. 2. Interior Surface: [Manufacturer's standard primer color] [As indicated] [As selected by Architect from manufacturer's standard colors] [Match Architect's custom color].
0.7 METAL WALL PANEL ACCESSORIES
A. Metal Wall Panel Accessories, General: Provide complete metal wall panel assembly incorporating trim, copings, fasciae, parapet caps, soffits, sills, inside and outside corners, and miscellaneous flashings. Provide manufacturer's factory-formed clips, shims, flashings, gaskets, lap tapes, closure strips, and caps for a complete installation. Fabricate and install accessories in accordance with SMACNA Manual.
Specifier: CENTRIA offers Microline Extrusions, an extensive line of complementary extruded trims that integrate both visually and mechanically with CENTRIA profile panels.
B. Extruded Trim: Manufacturer's complementary aluminum extrusions for head, jamb, sill, base, flush, reveal, inside and outside corner, endwall, and expansion joint details. Finish to match metal wall panels.
1. Basis of Design: CENTRIA, Microline Extrusions.
Specifier: CENTRIA offers MicroSeam Corners, a popular design feature that accentuates horizontal lines by eliminating trim at corners.
C. Mitered Corners: Structurally-bonded horizontal interior and exterior trimless corners matching metal wall panel material, profile, and factory-applied finish, fabricated and finished by metal wall panel manufacturer.
1. Welded, riveted, fastened, or field- fabricated corners do not meet the requirements of this specification. 2. Basis of Design: CENTRIA, MicroSeam Corners.
D. Formed Flashing and Trim: Match material, thickness, and color of metal wall panel face sheets.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 13 of 19 E. Sealants: Type recommended by metal wall panel manufacturer for application, meeting requirements of Division 07 Section "Joint Sealants."
F. Flashing Tape: 4-inch wide self-adhering butyl flashing tape.
G. Fasteners, General: Self-tapping screws, bolts, nuts, and other acceptable fasteners recommended by panel manufacturer. Where exposed fasteners cannot be avoided for miscellaneous applications, supply corrosion-resistant fasteners with heads matching color of metal wall panels by means factory-applied coating.
H. Concealed Clips: Galvanized steel, 0.051 inch/16 ga. (1.29 mm) thick, designed to allow unimpeded thermal movement of panel and configured to hold panel minimum 1/2 inch (12.7 mm) from substrate.
0.8 WALL LOUVER UNITS
A. Wall Louvers, General: Metal louvers, designed to integrate with metal wall panel profile and secondary support system without receptor channels or other flashing, of types and performance indicated.
Specifier: Select options and edit below as required for Project. Coordinate with HVAC engineer. Indicate size on Drawings. Integral louvers are available with CS-260 and CS-660 panels only.
B. Horizontal, Drainable-Blade Fixed Louver:
1. Louver Size: As indicated on Drawings. 2. Louver Depth: Match metal wall panel system depth. 3. Free Area: 30 percent.
C. Base Metal and Finish:
1. Match metal wall panel base metal and finish.
Specifier: Retain paragraph below if required, and select screen type. Bird screen is typically required; insect screen requires maintenance to ensure air flow.
D. Louver Screens: Mounted in removable aluminum frame.
1. Bird Screen: 1/2-inch (12 mm) mesh aluminum, crimped. 2. Insect Screen: 14-18 mesh aluminum, crimped.
Specifier: CENTRIA MetalWrap Insulated Composite Backup Panels are available in 12 foot (3658 mm) and 20 foot (6096 mm) lengths, in two widths, in two thicknesses for horizontal applications and two thicknesses for vertical applications. Panels are configured and shipped to accommodate application for backup for vertical or horizontal metal cladding or as masonry veneer backup.
0.9 METAL WALL BACKUP PANELS
A. Insulated Composite Backup Panels: Foamed-insulation-core metal-skinned panels with interlocking side joinery and butted end joints. Fabricate in factory with metal facings bonded to foamed-in-place core. Fabricate interior metal face with planking ribs. Form interlocking joinery to accept concealed fasteners for attachment to supports.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 14 of 19 1. Basis of Design Product: CENTRIA, MetalWrap Insulated Composite Backup Panel.
Specifier: Retain one "Panel Faces" paragraph below as required for project. 29-ga panel is typical for horizontal applications; 26-ga panel is required for vertical MetalWrap applications and for horizontal applications where compliance with FM 4880 Class 1 fire rating is required.
B. Panel Faces: 0.0142-inch/29-ga. (0.360-mm) thick aluminum-zinc alloy coated steel sheet: ASTM A792/A792M, Class AZ50 (Class AZM150) coating designation; structural quality, with smooth surface.
C. Panel Faces: 0.019-inch/26-ga. (0.483-mm) thick metallic-coated steel sheet: ASTM A653/A653M, G90 (Z275) coating designation; structural quality, with smooth surface.
Specifier: First option in "Panel Face Finish" paragraph is standard; second option is available for louver blank-off panels.
D. Panel Face Finish: [0.2-mil (0.051-mm) thick primer coat] [0.2-mil (0.051-mm) thick primer coat plus 0.8-mil (0.203-mm) thick black silicon polyester color coat on exterior face and 0.2-mil (0.051-mm) thick primer coat on interior face].
E. Panel Core: Foamed-in-place modified polyisocyanurate, closed-cell, CFC and HCFC free, with minimum density of 2.4 lb/cu. ft. (39 kg/cu. m) and minimum compressive strength of 15 lb/sq. in. (103 kPa).
F. Panel Sealant/Vapor Seal: Factory-applied non-curing butyl.
Specifier: Retain "Horizontal Panel" or "Vertical Panel" paragraph below as required for project.
Retain one of two options based upon project thermal performance requirements.
G. Horizontal Metal Wall Backup Panel Thickness and Thermal Resistance: [2 inches (51 mm); R-14] [3 inches (76 mm); R-21].
Specifier: Select one of two options based upon project thermal performance requirements.
H. Vertical Metal Wall Backup Panel Thickness and Thermal Resistance: [2.75 inches (69 mm); R-20] [4 inches (101 mm); R-27].
Specifier: Retain second option in "Panel Width" subparagraph when required to align ties in panel joints with masonry course spacing.
I. Panel Width: [36 inches (914 mm)] [32 inches (813 mm)].
J. Panel Configuration: Provide metal wall backup panels configured for the following application system:
Specifier: Retain one or more of the following backup panel configurations as required for project.
System in subparagraph below corresponds to CENTRIA MetalWrap Type 1 System with MR-100 Integral Attachment System utilizing VS-300 subgirt.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 15 of 19 1. Horizontal metal wall backup panels with integral pre-punched attachment system configured to serve as attachment points for manufacturer-furnished vertical subgirts to receive horizontal cladding.
System in subparagraph below corresponds to CENTRIA MetalWrap Type 2 System with MR-300 Integral Attachment System utilizing VS-300 subgirt. 2. Horizontal metal wall backup panels with integral pre-punched attachment system configured to serve for the direct attachment of vertical cladding, or as attachment points for manufacturer-furnished vertical subgirts to receive horizontal cladding
System in subparagraph below corresponds to CENTRIA MetalWrap Type 3 System utilizing Hohmann and Barnard 200 Series Joint Anchors and 200 Series Surface Mount Anchors. Retain if a portion of the work includes backup for face brick. 3. Horizontal metal wall backup panel for masonry veneer, with manufacturer-furnished veneer anchors in panel joints and attached at panel midpoints.
System in subparagraph below corresponds to CENTRIA MetalWrap Type 4 System. Utilize CENTRIA 14 ga. A-42 clip for 2 inch thick panels, and A-43 clip for 3 inch panels. System requires minimum 16 ga. steel stud framing. 4. Horizontal metal wall backup panel with manufacturer-furnished 0.064 inch/14 ga. (1.63 mm) zee clips configured to serve as attachment points for vertical subgirts to receive horizontal cladding.
System in subparagraph below utilizes CENTRIA MetalWrap oriented vertically using mounting clips configured to accept vertical subgirts. System may be utilized for wall construction framed with horizontal purlins. 5. Vertical installation metal wall backup panel , with manufacturer-furnished 0.081 inch/12 ga. (2.05 mm) attachment clips, 304 stainless steel fasteners, and vertical subgirts
0.10 METAL WALL BACKUP PANEL ACCESSORIES
A. Subgirts: Metallic-coated steel sheet, ASTM A653/A653M, G90 (Z275) coating designation; structural quality, 0.051-inch/16-gage (1.29-mm) thick.
B. Panel Mounting Clips: Metallic-coated steel sheet, ASTM A653/A653M, G90 (Z275) coating designation, of thickness indicated, configured to serve as attachment points for secondary metal framing where indicated, manufacturer-furnished.
C. Self-Adhering Sheet Flashing: Minimum 25-mil (0.64-mm) modified bituminous sheet, recommended by panel manufacturer for application.
D. Joint Sealants:
1. Concealed: Non-skinning butyl sealant, AAMA 809.2. 2. Exposed: Elastomeric silicone sealant, ASTM C920, as recommended by panel manufacturer.
E. Fasteners: Corrosion-resistant, self-tapping and self-drilling screws, bolts, nuts, and other fasteners as recommended by panel manufacturer for application.
1. Size fasteners to prevent penetration of interior panel facing.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 16 of 19 0.11 SECONDARY METAL SUBGIRT FRAMING
A. Miscellaneous Framing Components, General: Cold-formed metallic-coated steel sheet, ASTM A653/A653M, G90 (Z180).
1. Hat Channels: 0.053 inch/16 ga. (1.34 mm) minimum. 2. Sill Channels: 0.053 inch/16 ga. (1.34 mm) minimum.
0.12 FABRICATION
A. General: Fabricate metal wall backup panels at the factory, using manufacturer's standard procedures and processes identical to tested units and as necessary to meet performance requirements.
1. Fabricate metal wall backup panels with joints between panels designed to form weathertight seals. 2. Factory form metal wall backup panels in a continuous process with no glues or adhesives between dissimilar materials. Trim and square edges of sheets with no displacement of face sheets or protrusion of core material.
PART 3 - EXECUTION
0.1 INSPECTION
A. Examine building structure with Installer present. Inspect for erection tolerances and other conditions that would adversely affect installation.
1. Inspect framing that will support metal wall backup panel system to determine if support components are installed as indicated on approved shop drawings and are within tolerances acceptable to panel manufacturer.
a. Maximum deviations acceptable to metal wall backup panel system manufacturer:
1) 3/8 inch (9.5 mm) in any 20-foot (6.1 m) length vertically or horizontally from the framing face plane. 2) 3/4 inch (19 mm) maximum deviation from the framing face plane on any building elevation.
B. Air/Moisture Barriers: Confirm that work has been completed, inspected, and tested as required.
C. Openings: Verify that window, door, louver and other penetrations match layout on shop drawings.
D. Correct out of tolerance work and other deficient conditions prior to proceeding with insulated composite backup panel installation.
0.2 METAL WALL BACKUP PANEL SYSTEM INSTALLATION
A. General: Install metal wall backup panel system in accordance with approved shop drawings and manufacture's recommendations.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 17 of 19 B. Installation: Attach backup panels to supports at each panel connection point indicated on approved shop drawings.
1. Install with drain plane of panel facing weather side of installation. 2. Fasten insulated metal wall backup panels to building framing with [continuous integral attachment subgirts] or [special clips and anchors] provided by manufacturer utilizing recommended fasteners. 3. Horizontal Joinery: Working from base to top of metal wall backup panel system installation, lap upper panel over lower panel to form a weather tight joint oriented to allow gravity drainage. 4. Vertical Joinery:
a. Install vertical butt joints tight with no gap, set against continuous supports. b. Set panel ends in continuous bead of non-curing butyl sealant as indicated in manufacturer's installation details. c. Seal butt joints between adjacent panels with a continuous strip of self-adhering flashing at bottom row of panels and where additionally recommended by manufacturer or architect.
0.3 ERECTION TOLERANCES
A. Installation Tolerances: Align metal wall backup panel system within installed tolerance of 1/4 inch in 20 feet (6 mm in 6.1 m), noncumulative, on level and plumb and location lines as indicated and within 1/8 inch (3 mm) offset of adjoining faces and of alignment of matching profiles.
0.4 SECONDARY FRAMING INSTALLATION
Specifier: Retain article if secondary framing is part of work of this Section.
A. Secondary Metal Subgirt Framing: Install secondary metal framing components to tolerances indicated, as shown on approved shop drawings. Install secondary metal framing and other metal panel supports per ASTM C1007 and metal wall panel manufacturer's recommendations.
0.5 METAL WALL PANEL INSTALLATION
A. General: Install metal wall panels in accordance with approved shop drawings and manufacturer's recommendations. Install metal wall panels in orientation, sizes, and locations indicated. Anchor metal wall panels and other components securely in place. Provide for thermal and structural movement
B. Attach panels to metal framing using recommended clips, screws, fasteners, sealants, and adhesives indicated on approved shop drawings.
1. Fasteners for Steel Wall Panels: Stainless-steel for exterior locations and locations exposed to moisture; carbon steel for interior use only. 2. Fasten metal wall panels to supports with concealed clips at each joint at location, spacing, and with fasteners recommended by manufacturer. Install clips to supports with self-tapping fasteners. 3. Provide weatherproof escutcheons for pipe and conduit penetrating exterior walls.
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 18 of 19 4. Dissimilar Materials: Where elements of metal wall panel system will come into contact with dissimilar materials, treat faces and edges in contact with dissimilar materials as recommended by manufacturer.
C. Joint Sealers: Install joint sealants where indicated on approved shop drawings.
0.6 ACCESSORY INSTALLATION
A. General: Install metal wall panel accessories with positive anchorage to building and provide for thermal expansion. Coordinate installation with flashings and other components.
1. Install related flashings and sheet metal trim per requirements of Division 07 Section "Sheet Metal Flashing and Trim." 2. Install components required for a complete metal wall panel assembly, including trim, copings, corners, lap strips, flashings, sealants, fillers, closure strips, and similar items. 3. Comply with performance requirements and manufacturer's written installation instructions. 4. Provide concealed fasteners except where noted on approved shop drawings. 5. Set units true to line and level as indicated.
0.7 FIELD QUALITY CONTROL
Specifier: Retain paragraph below when scope and complexity of metal wall panel installation justifies inspection expense.
A. Manufacturer's Field Service: Engage a service representative authorized by metal wall panel manufacturer to inspect completed installation. Submit written report.
B. Correct deficiencies noted in manufacturer's report.
0.8 CLEANING AND PROTECTION
A. Remove temporary protective films. Clean finished surfaces as recommended by metal wall panel manufacturer. Clear weep holes and drainage channels of obstructions, dirt, and sealant. Maintain in a clean condition during construction.
B. Replace damaged panels and accessories that cannot be repaired by finish touch-up or minor repair.
END OF SECTION
CENTRIA METAL WALL RAINSCREEN PANEL WITH METAL WALL BACKUP PANEL SYSTEM 074217 Page 19 of 19