CENTRIA SRS3 Structural Standing Seam Metal Roof Panels

Transcription

1 CENTRIA SRS3 Structural Standing Seam Metal Roof Panels CENTRIA SRS3 Structural Standing Seam Metal Roof Panels are manufactured in many different coil coating systems and painted with a wide variety of manufacturer's standard colors plus an unlimited choice of custom colors. Basic coil materials are manufactured in galvanized steel, Galvalume coated steel, aluminum, Galvalume Plus, and a distinctive moderately reflective stainless steel. CENTRIA SRS2 Metal Roof Panels are available with a flat or embossedexterior surface. SRS3 panels have 3 inch (76 mm) high seams, with 12, 16, or 18 inch (305, 406, 457 mm) wide pans. Many accessories are available for commercial and industrial applications. Consult your local CENTRIA architectural representative for design assistance. Contact CENTRIA, Pittsburgh, PA, (800) , [email protected], for a list of offices. 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, coating a wide range of products for customers in numerous industries. CENTRIA products appear in the following MasterFormat sections: Section Metal Roof Panels (SRS2, SRS3) Section Insulated Core Metal Roof Panels (Versapanel) Section Metal Wall Panels (Concept Series, IW Series, Exposed Fastener Panels) Section Insulated-Core Metal Wall Panels (Formawall Dimension Series, Formawall Graphics Series, Versawall, Versapanel) Section Insulated Composite Backup Panel (MetalWrap) Section Composite Wall Panels (FormaBond) Specifier: This document is organized according to CSI MasterFormat 2004 and SectionFormat 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 MasterSpec and SpecText editing tools. Kynar 500 is a registered trademark of Arkema, Inc. Hylar 5000 is a registered trademark of Solvay S.A. Galvalume is a registered trademark of BIEC International, Inc. MasterFormat and SectionFormat are trademarks of the Construction Specifications Institute. MasterSpec is a registered trademark of the American Institute of Architects. SpecText is a registered trademark of the Construction Sciences Research Foundation. This document is Copyright 2010 CENTRIA All rights reserved. Page 1 of 14

2 SECTION METAL ROOF PANEL, STANDING SEAM PART 1 - GENERAL 1.1 SECTION INCLUDES A. Standing seam metal roof panel system. 1.2 RELATED REQUIREMENTS Specifier: If retaining Related Requirements Article, 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 cold-formed metal framing supporting metal roof panel. C. Division 05 Section "Steel Decking" for steel roof deck supporting standing seam metal roof panel. D. Division 07 Section "Thermal Insulation" for field installed thermal insulation. E. Division 07 Section "Metal Wall Panels" for factory-formed metal soffit panels. F. Division 07 Section "Sheet Metal Flashing and Trim" for sheet metal copings, flashings, reglets and roof drainage items not specified in this Section. G. Division 07 Section "Manufactured Roof Specialties" for manufactured copings, reglets, and roof drainage items. H. Division 07 Section "Roof Accessories" for roof hatches, smoke vents, equipment curbs, and equipment supports. I. Division 07 Section "Joint Sealants" for field-applied joint sealants. 1.3 SYSTEM DESCRIPTION A. Metal Roof Panel System: Metal roof panels with concealed attachment, [and supplemental framing members required for complete metal framing attachment system], thermal insulation, and accessories necessary for a complete watertight installation. 1.4 DEFINITIONS Specifier: C2C certification described in paragraph below is a comprehensive sustainability certification that transcends LEED requirements to address life cycle analysis of entire production cycle of building products. CENTRIA and a number of leading product manufacturers have aligned their manufacturing and distribution practices with C2C core principles. Page 2 of 14

3 A. Cradle to Cradle Certification: The Cradle to Cradle Certification process, administered by McDonough Braungart Design Chemistry (MBDC), that evaluates materials and product ingredients and the complete formulation for human and environmental health impacts throughout its lifecycle as well as its potential for being truly recycled or safely composted. 1.5 REFERENCES Specifier: If retaining References Article, edit to correspond to project. A. Aluminum Association (AA): 1. Specification for Aluminum Structures. B. American Architectural Manufacturer's Association (AAMA): 1. AAMA Voluntary Specifications for High Performance Organic Coatings on Coil Coated Architectural Aluminum Substrates. 2. AAMA Voluntary Specifications for High Performance Organic Coatings on Coil Coated Architectural Hot Dipped Galvanized (HDG) & Zinc-Aluminum Coated Steel Substrates. C. American Iron and Steel Institute (AISI): 1. Specification for the Design of Cold-Formed Steel Structural Members. D. American Society of Civil Engineers (ASCE): 1. ASCE 7 - Minimum Design Loads for Buildings and Other Structures. E. ASTM International (ASTM): 1. ASTM A Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy- Coated (Galvannealed) by the Hot-Dip Process. 2. ASTM A 666 Standard Specification for Annealed or Cold Worked Austenitic Stainless Steel Sheet, Strip, Plate and flat bar. 3. ASTM A 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 A 792 Specification for Steel Sheet, 55 percent Aluminum-Zinc Alloy Coated by the Hot Dip Process. 5. ASTM B Specification for Aluminum and Aluminum Alloy Sheet and Plate. 6. ASTM C Specification for Elastomeric Joint Sealants. 7. ASTM D Test Method for Calculation of Color Differences from Instrumentally Measured Color Coordinates. 8. ASTM D Test Methods for Evaluating Degree of Chalking of Exterior Paint Films. 9. ASTM E Test Methods for Fire Tests of Building Construction and Materials. 10. ASTM E Specification for Structural Standing Seam Steel Roof Panel. 11. ASTM E Standard Test Method for Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure Difference. 12. ASTM E Specification for Structural Standing Seam Aluminum Roof Panel Systems. 13. ASTM E Standard Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Static Air Pressure Difference. Page 3 of 14

4 14. ASTM E Standard Test Method for Rate of Air Leakage Through Exterior Metal Roof Panel Systems. 15. ASTM E Practice for Calculating Solar Reflectance Index of Horizontal and Low- Sloped Opaque Surfaces. F. Factory Mutual Global (FMG): 1. ANSI/FMG 4471 Class 1 Panel Roofs. G. Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA): 1. Architectural Sheet Metal Manual. H. Underwriters Laboratories, Inc. (UL): 1. UL 580 Tests for Uplift Resistance of Roof Assemblies. 2. UL Fire Resistance Directory. 3. UL Roofing Materials Directory. I. US Environmental Protection Agency: 1. Energy Star Reflective Roof Products. J. US Green Building Council (USGBC): 1. Leadership in Energy and Environmental Design (LEED). 1.6 PERFORMANCE REQUIREMENTS A. General: Provide metal roof panel system meeting performance requirements as determined by application of specified tests by a qualified testing agency on manufacturer's standard assemblies. B. Air Infiltration: Maximum cfm/sq. ft. (0.183 L/s per sq. m) per ASTM E 1680 at a staticair-pressure difference of 4 lbf/sq. ft. (191.5 Pa). C. Water Penetration Static Pressure: No uncontrolled water penetration at a static pressure of 6.4 lbf/sq. ft (306.4 Pa) when tested per ASTM E D. Structural Performance: Provide metal roof panel system capable of withstanding the effects of indicated loads and stresses within limits and under conditions indicated, per ASTM based on testing according to ASTM E 1592: Specifier: Consult structural engineer and edit below as required by local codes. Insert structural data below if not indicated on drawings. 1. Wind Loads: Determine loads based on uniform pressure, importance factor, exposure category, and basic wind speed indicated on drawings. 2. Snow Loads: As indicated on Drawings 3. Deflection Limits: Metal roof panel system shall withstand wind and snow loads with vertical deflections no greater than 1/180 of the span 4. Concentrated Load Performance: Provide metal roof panel system that withstand a concentrated load of 250 lbs (113 kg) applied to a 4 sq. in. (2580 sq. mm) at midspan Page 4 of 14

5 and center of the panel halfway between supports without causing deformation, buckling or side lap separation. Specifier: Verify seismic performance requirements of authorities having jurisdiction. 5. Seismic Performance: Comply with ASCE 7 Sections 9, "Earthquake Loads." E. FMG Listing: Comply with FMG Provide metal roof panel assembly listed in FMG s "Approval Guide." 1. Fire and Windstorm Classification: Class 1A Hail Resistance: SH. F. Wind Uplift Resistance: UL 580 wind uplift rating UL 90. 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. 1. Thermal Cycle test: Provide metal roof panel system that shows no wear when subject to 100,000 cycles of 1 inch (25 mm) movement in the plane of the panel face relative to the clip anchor. Specifier: Retain paragraph below if foam plastic insulation is included within the wall system. H. Roof systems that incorporate foam plastic insulation must be tested by the foam plastic supplier in accordance with NFPA-285. Specifier: Retain one or more energy performance subparagraphs below based on project requirements. Retain Solar Reflectance Index for LEED projects. Retain Energy Star reference for projects seeking Energy Star rating; products must be listed on EPA Energy Star website. Retain CEC compliance for projects required to comply with CEC requirements. Verify values with manufacturer for selected panel finishes. I. Energy Performance: 1. Solar Reflectance Index: Minimum 78 for roof slopes of 2:12 or less and 29 for roof slopes greater than 2:12 per ASTM E Energy Star Qualified: Listed on USDoE ENERGY STAR Roof Products Qualified Product List 3. California Energy Commission Compliance: Minimum initial solar reflectance of [0.70] and emissivity of [0.75] per CRRC-1, QUALITY ASSURANCE A. Manufacturer/Source: Provide metal roof panel system from a single manufacturer. Specifier: Retain and edit spbuparagraph below if work of this Seciton is required to be supplied by same manufacturer of a related product in another section. 1. Provide products by same manufacturer as manufacturer of products specified in Division [00] Section "[Insert Division number and Section name]." Specifier: Retain paragraph below if Owner allows substitutions but requires strict control over qualifying of substitutions. Page 5 of 14

6 B. Manufacturer Qualifications: Approved manufacturer listed in this Section 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 allowed for substitution review: a. Product data, including certified independent test data indicating compliance with requirements. b. Samples of each component. c. Sample submittal from similar project. d. Project references: Minimum of 5 installations not less than 5 years old, with Owner and Architect contact information. e. 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. C. Installer Qualifications: Experienced Installer with minimum of 5 years experience with successfully completed projects of a similar nature and scope. Specifier: Retain and edit subparagraph below if work of this Section is required to be installed by same Installer of a related product in another section. 1. Provide work installed by same Installer as Installer of products specified in Division [00] Section "[Insert Division number and Section name]." D. Fire Performance Characteristics: Provide metal roof panel system with the following fire-test characteristics. 1. Surface-Burning Characteristics: Provide metal roof panel system with the following characteristics when tested per ASTM E 84. a. Flame spread index: 25 or less. b. Smoke developed index: 450 or less. Specifier: Retain below when metal roof panels are part of a fire-resistance-rated roof assembly. 2. Fire Resistance Ratings: Provide metal roof panel system tested as part of a roof assembly listed in UL Fire Resistance Directory. 1.8 ADMINISTRATIVE REQUIREMENTS A. Preinstallation Meeting: Prior to erection of metal roof panel system, conduct preinstallation meeting at site attended by Owner, Architect, manufacturer's technical representative, inspection agency and related trade contractors. 1. Coordinate building framing in relation to metal roof panel system. 2. Coordinate openings and penetrations of metal roof panel system. 3. Coordinate work of Division 07 Sections "Roof Specialties" and "Roof Accessories" and roof openings and penetrations and manufacturer's accessories with installation of metal roof panels. Page 6 of 14

7 1.9 ACTION SUBMITTALS A. Product Data: Manufacturer s data sheets for specified products. Specifier: Retain and edit below to comply with Project requirements for LEED or other sustainable design requirements. B. LEED Submittals: 1. Credit SS 7.2: Product data indicating compliance with solar reflectance index requirement. 2. 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. Include statement indicating costs for each product having recycled content. C. Shop Drawings: Show layouts of metal roof panels. Include details of each condition of installation, panel profiles, and attachment to building. Provide details at a minimum scale 1-1/2-inch per foot of edge conditions, joints, fastener and sealant placement, flashings, penetrations, and special details. Make distinctions between factory and field assembled work. 1. Include data indicating compliance with performance requirements. 2. Indicate points of supporting structure that must coordinate with metal roof panel system installation. 3. Include structural data indicating compliance with performance requirements and requirements of local authorities having jurisdiction. D. Samples for Initial Selection: For each product specified including sealants and gaskets. Provide representative color charts of manufacturer's full range of colors. E. Samples for Verification: Provide 12-inch- (305 mm-) long section of metal roof panel showing finishes, vertical joint return, and anchoring details. Provide 12-inch- (305 mm-) long pieces of trim INFORMATIONAL SUBMITTALS A. Product Test Reports: Indicating compliance of products with requirements, from a qualified independent testing agency, when requested by architect. Specifier: Include requirement for coordination drawings for complex installations or installations involving an unusual amount of coordination between separate installers. B. Coordination Drawings: Provide drawings of metal roof panel system coordinating the installation with structural framing, secondary framing, roof deck, penetrations, openings, and mechanical attachments. C. Cradle to Cradle Certification: Submit minimum of silver level Cradle to Cradle certification or a comparable independent sustainability audit acceptable to Owner that evaluates and validates materials, material reutilization/design for environment, energy use, water usage, and social responsibility of the product and manufacturing process. 1. Protective Coating contains no Polyvinyl Chloride. 2. Minimum Nutrient Utilization Score as defined by MBDC: 50 Page 7 of 14

8 3. Minimum steel recycled content: 25 percent. 4. Certified and Documented energy used to manufacture panels on a square foot basis. 5. Water Stewardship Guidelines: Singed by company CEO. Specifier: Retain paragraphs below when Project requirements include compliance with Federal Buy American provisions. CENTRIA SRS3 Standing Seam Metal Roof Systems complies with requirement. D. Buy American Act Certification: Submit documentation certifying that products comply with provisions of the Buy American Act 41 U.S.C 10a 10d. E. Qualification Information: For Installer firm and Installer s field supervisor. F. Manufacturer's warranty: Submit sample warranty CLOSEOUT SUBMITTALS A. Maintenance data DELIVERY, STORAGE, AND HANDLING A. Protect products of metal roof panel system during shipping, handling, and storage to prevent staining, denting, deterioration of components or other damage. Protect panels and trim bundles during shipping with water resistant paper. Protect painted surfaces with a strippable protective covering before shipping. 1. Deliver, unload, store, and erect metal roof panel system and accessory items without misshaping panels or exposing panels to surface damage from weather or construction operations. 2. Store in accordance with Manufacturer's written instruction. Provide wood collars for stacking and handling in the field WARRANTY Specifier: Warranty terms below are available from CENTRIA. Verify that other allowable manufacturers furnish warranty meeting requirements. A. Special Manufacturer s Warranty: On Manufacturer s standard form, in which Manufacturer agrees to repair or replace components of metal roof panel system that fail in materials and workmanship within [two] years from date of Substantial Completion. Specifier: Retain paragraph below for Galvalume panels (AZ50 or AZ55 substrate). B. Metal Panel Warranty: On Manufacturer s standard form, in which Manufacturer agrees to repair or replace metal panels that rupture or perforate due to corrosion within [20] years from date of Substantial Completion. C. Special Weathertight Performance Warranty: On Manufacturer's standard form, in which Manufacturer and Installer agree to pay the cost of repair or replacement of components of metal roof panel system that fail to remain weathertight for a period of [five] [10] [20] years from date of Substantial Completion, up to the cost of the initial material purchase order and initial installation labor cost. Page 8 of 14

9 Specifier: Consult CENTRIA representative to verify available finish warranty. D. Special Panel Finish Warranty: On Manufacturer s standard form, in which Manufacturer agrees to repair or replace metal roof panels that evidence deterioration of factory-applied finish within [20] years from date of Substantial Completion, including: 1. Color fading in excess of 5 Hunter units per ASTM D Chalking in excess of No. 8 rating per ASTM D Failure of adhesion, peeling, checking, or cracking. PART 2 - PRODUCTS 2.1 MANUFACTURERS Specifier: Retain basis of design manufacturer and products listed in this Article where allowed. If inserting comparable manufacturers, carefully review products and engineering capabilities in relation to requirements of this Section, to ensure that other approved manufacturers offer products meeting CENTRIA's standards. A. Basis of Design: CENTRIA, SRS3 Structural Standing Seam Metal Roof Panel System. Provide basis of design product[, or comparable product approved by Architect prior to bid]. 1. CENTRIA Architectural Systems; Moon Township, PA Tel: (800) Tel: (412) Fax: (412) [email protected]. Web: MATERIALS A. Metallic-Coated Steel Face Sheet: Coil-coated, ASTM A 755/A 755M. Specifier: Select metal roof panel face material from three paragraphs below. Aluminum-zinc alloycoated steel sheet, Galvalume, Galvalume Plus with a thin, clear acrylic topcoat, is also available and is recommended for uniform weathering when specified without an applied paint finish. Galvalume substrates are eligible for extended warranty from CENTRIA. G90 galvanized is available in 20, 22, and 24 gage sheet. Galvalume is available in 22 and 24 gage sheet. Galvalume Plus is available in 22 and 24 gage sheet. 1. Zinc Metallic Coated (Galvanized) Steel Sheet: ASTM A 653/A 653M, SS Grade 37, G90 (Z275), structural steel. 2. Aluminum-Zinc Coated Steel Sheet: ASTM A 792/A 792, Grade 50B, class AZ50 Galvalume coating designation, and structural quality. 3. Aluminum-Zinc Coated Steel Sheet: ASTM A 792/A 792, Grade 50B, class AZ55 Galvalume Plus coating designation, and structural quality. Specifier: Select required metal face sheet thickness from options below. CENTRIA recommends the use of minimum 22 gage structural standing seam metal roof panels to achieve enhanced structural performance and optimum aesthetic appearance. 1. Face Sheet: Minimum [0.030 inch/22 gage (0.76 mm)] [0.036 inch/20 gage (0.91 mm)] nominal uncoated thickness. 2. Surface: [Smooth] [Non-Directional Embossed]. B. Aluminum Face Sheet: Smooth surface coil-coated, ASTM B209, 3003-H14 or 5052-H32 alloy. Page 9 of 14

10 1. Recycled Content: Provide aluminum sheet with recycled content meeting Project LEED requirements. Specifier: Select required metal face sheet thickness from options below. 2. Face Sheet: inch (1.0 mm) nominal thickness. 3. Surface: [Smooth] [Non-Directional Embossed]. C. Stainless-Steel Face Sheet: ASTM A 666, architectural grade alloy type as indicated. Specifier: Select required metal face sheet thickness from options below. 1. Face Sheet: [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, #4 Brushed] [Type 316, bright, non-directional polish, No. 2B]. 2.3 STANDING SEAM METAL ROOF PANELS A. Structural Standing Seam Metal Roof Panels: Formed with 3 inch (76 mm) high vertical ribs at panel edges[ and evenly spaced raised longitudinal planks], manufactured for sequential installation by attaching panels to supports using concealed clips and engaging edges of adjacent panels and mechanically seaming panel ribs together, sealed with factory-applied sealant. 1. Panel Coverage: [12 inch (305 mm) ] [16 inch (406 mm)] [18 inch (457 mm)]. Specifier: Provide stainless steel anchor clips for stainless steel and aluminum standing seam metal roof panels. 2. Anchor Clips: 2.4 FINISHES a. Galvanized steel G90, 1-piece, 16 ga., movement allowance 2 inch (51 mm). b. Stainless steel, 2-piece, 16 ga., movement allowance 3 inch (76 mm). Specifier: Select metallic-coated steel face sheet or aluminum face sheet finish system from options below. AAMA 620 is aluminum sheet finish standard; AAMA 621 is metallic-coated steel sheet finish standard. Delete article if retaining stainless steel material above. For projects with sustainable design requirements, verify with manufacturer that selected finish and color meet SRI requirements in Part 1. 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 [620] [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 [620] [621]. Page 10 of 14

11 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 [620] [621]. a. Basis of Design: CENTRIA Duragard Plus. 4. Fluoropolymer Two-Coat Mica System: 0.20-mil primer with 0.8-mil 70 percent PVDF fluoropolymer color coat providing a pearlescent appearance, AAMA [620] [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 [620] [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. B. Color: 6. Fluoropolymer Two-Coat Corrosion and Abrasion Resistant System: 3.0 mil primer with 0.8 mil 70 percent PVDF fluoropolymer color coat a. Basis of Design: CENTRIA Versacor Ultra PF. b. Interior Finish: Manufacturer's standard. 7. Urethane Two-Coat Corrosion and Abrasion Resistant System: 3.0 mil barrier coat primer with 1.5 mil urethane color coat. a. Basis of Design: CENTRIA Versacor Ultra TF. b. Interior Finish: Manufacturer's standard. 8. Urethane Two-Coat Plus Corrosion and Abrasion Resistant System: 3.0 mil primer with 3.0 mil urethane color coat. a. Basis of Design: CENTRIA Versacor Ultra HF. b. Interior Finish: Manufacturer's standard. 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]. a. Energy Performance: [Comply with Solar Reflectance Index Requirement] [Provide Energy Star qualified product] [Meet CRRC-1 requirement]. 2. Interior Surface: Manufacturer's standard primer color. Page 11 of 14

12 2.5 METAL ROOF PANEL ACCESSORIES A. Provide complete metal roof panel assembly incorporating trim, copings, fasciae, soffits, downspouts, insulation spacers and miscellaneous flashings. Provide required fasteners, gaskets, closure strips, and sealants. Fabricate and install accessories in accordance with SMACNA Manual. 1. Steel Roof Panel Systems: Comply with ASTM E Aluminum Roof Panels Systems: Comply with ASTM E 1637 and AA "Specification for Aluminum Structures." 3. Flashing and Trim: Match material, thickness, and finish of metal roof panels. B. Panel Fasteners: Self-tapping screws, bolts, nuts, and other acceptable fasteners recommended by roof panel manufacturer. Where exposed fasteners cannot be avoided, supply corrosion-resistant fasteners with heads matching color of metal panels by means of factory-applied coating. 1. Exposed Screws: Manufacturer's recommended stainless steel screws with bonded neoprene and stainless steel washers, coated to match panel color. 2. Concealed Screws: Manufacturer's recommended corrosion resistant carbon steel with corrosion resistant coating. C. Panel Sealants: 1. Side Lap Sealant: One part, non-skinning, non-drying, synthetic butyl elastomer sealant. 2. Field Applied Unexposed Sealant: Side Laps, end laps, and flashing details: Gun grade, nonskinning, butyl elastomer or polymeric non-skinning butyl tape. 3. Exposed Sealant: ASTM C 920; elastomeric polyurethane, polysulfide, or silicone sealant; of type, grade, class, and use classifications required to seal joints in metal roof panels and remain weathertight; as recommended by metal roof panel manufacturer colored to match panel color. D. Thermal Spacers at Purlins: Manufacturer's standard spacer. E. Pipe Flashings: Molded EPDM, with metal collar. F. Snow Guards: See Specifier Note Specifier: CENTRIA does not furnish snow guards. Systems utilizing non-piercing S-5! Clamps are recommended. 2.6 SECONDARY METAL FRAMING A. Miscellaneous Framing Components, General: Cold-formed metallic-coated steel sheet, ASTM A 653/A 653M, G90 (Z180). 1. Hat Channels: inch/16 ga. (1.34 mm) minimum. Page 12 of 14

13 PART 3 - EXECUTION 3.1 EXAMINATION A. Examine metal roof panel system substrate with Installer present. Inspect for erection tolerances and other conditions that would adversely affect installation of metal roof panel installation. Do not install roof panels until panel substrate meets roof panel manufacturer's requirements. 1. Inspect framing that will support metal roof panel system to determine if support components are installed as indicated on approved shop drawings. Confirm presence of acceptable framing members at recommended spacing to match installation requirements of metal roof panels. 2. Panel Support Tolerances: Install metal roof panels on substrate within tolerances acceptable to metal roof panel system manufacturer: 3.2 INSTALLATION a. Maximum out of plane deviation 1/4 inch in 20 feet (6 mm in 6.1 m). b. Maximum deviation 1/2 inch (12.7 mm) over entire roof. A. General: Install metal roof panel system in accordance with approved shop drawings and manufacturer's recommendations. Install metal roof panels in orientation, sizes, and locations indicated. Install metal roof panels in one piece lengths from the ridge to eave unless otherwise indicated on approved shop drawings. Anchor 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. Fasten metal roof 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 approved by manufacturer. 2. Provide weatherproof escutcheons for pipe and conduit penetrating roof. 3. 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 sealers where indicated and where required for weatherproof performance of metal roof panel assemblies. 1. Prepare joints and apply sealants per requirements of Division 07 Section "Joint Sealants." 3.3 ACCESSORY INSTALLATION A. General: Install metal roof panel accessories with positive anchorage to building and weather tight mounting 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." Page 13 of 14

14 2. Install components required for a complete metal roof panel assembly, including trim, copings, flashings, sealants, gaskets, fillers, closure strips, and similar items. 3. Comply with performance requirements, requirements of authorities having jurisdiction, 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. Install work with laps, joints, and seams that will be permanently watertight and weather resistant. 3.4 FIELD QUALITY CONTROL A. Manufacturer's Field Service: Engage a service representative authorized by metal wall panel manufacturer to inspect completed installation. Submit written report. Correct deficiencies noted in report. 3.5 CLEANING AND PROTECTION A. Remove temporary protective films when directed by Architect. Clean finished surfaces as recommended by metal roof panel manufacturer. B. Replace damaged panels and accessories that cannot be repaired to the satisfaction of the Architect. END OF SECTION Page 14 of 14