SECTION PREFORMED METAL ROOFING - REVISION 1

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2 PART 1 GENERAL SECTION PREFORMED METAL ROOFING - REVISION SECTION INCLUDES A. Structural roofing system of preformed steel panels. B. Architectural roofing system of preformed steel panels. C. Thermal roof insulation. D. Substrate Boards E. Snow Guards F. Fastening system. G. Factory finishing. H. Accessories and miscellaneous components RELATED REQUIREMENTS A. Section Pre-Engineed Retrofit Roof Framing System: Metal framing for retrofit roofing over existing low slope roofing structure - Bid Alternate. B. Section Rough Carpentry: Roof sheathing. C. Section Metal Wall Panels: Preformed wall panels. D. Section Preparation for Re-Roofing: Roofing removal and temporary protection requriements. E. Section Joint Sealers: Field-installed sealants REFERENCE STANDARDS A. ASCE 7 - Minimum Design Loads for Buildings and Other Structures. B. ASTM A-525 Steel Sheet, Zinc-Coated (Galvanized) C. SMACNA - Architectural Sheet Metal Manual. D. Building Materials Directory - Underwriter's Laboratories, Test Procedure 580. E. ASTM A653/A653M - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process. F. ASTM A792/A792M - Standard Specification for Steel Sheet, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip Process. G. ASTM A1011/A1011M - Standard Specification for Steel, Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, and Ultra-High Strength. H. ASTM D1970/D1970M - Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection. I. ASTM E72 - Standard Test Methods of Conducting Strength Tests of Panels for Building Construction. J. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials

3 K. ASTM E96/E96M - Standard Test Methods for Water Vapor Transmission of Materials. L. ASTM E Standard Test Method for Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure Difference. M. ASTM E Standard Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Static Air Pressure Difference. N. ASTM E Standard Test Method for Rate of Air Leakage Through Exterior Metal Roof Panel Systems. O. UL Standard for Tests for Uplift Resistance of Roof Assemblies SUBMITTALS A. See Section Administrative Requirements, for submittal procedures. B. Product Data: Manufacturer's data sheets on each product to be used, including: 1. Storage and handling requirements and recommendations. 2. Installation methods. 3. Specimen warranty. C. Shop Drawings: Include layouts of roof panels, details of edge and penetration conditions, spacing and type of connections, flashings, underlayments, and special conditions. 1. Show work to be field-fabricated or field-assembled. 2. For retrofit roofing and structural panels, include structural analysis signed and sealed by qualified structural engineer, indicating conformance of roofing system to specified loading conditions. D. Selection Samples: For each roofing system specified, submit color chips representing manufacturer's full range of available colors and patterns. E. Verification Samples: For each roofing system specified, submit samples of minimum size 12 inches (305 mm) square, representing actual roofing metal, thickness, profile, color, and texture. 1. Include typical panel joint in sample. 2. Include typical fastening detail. F. Test Reports: Indicate compliance of metal roofing system to specified requirements. G. Certification shall be submitted, based on independent testing laboratory, indicating no measurable water penetration or air leakage through the system when tested in accordance with ASTM E-1680 and E-1646 H. Warranty: Submit specified manufacturer's warranty specimen and ensure that forms have been completed in Owner's name and are registered with manufacturer upon completion QUALITY ASSURANCE A. Manufacturer Qualifications: Company specializing in the manufacture of roofing systems similar to those required for this project, with not less than 5 years of documented experience. B. Installer Qualifications: 1. A qualified firm that is approved, authorized, or licensed by roofing system manufacturer to install roofing manufacturer's product and that is eligible to recieve the specified manufacturer's warranty. 2. Installer must provide the following with the bid documents: a. Proof of a minimum of five (5) similar No Dollar Limit guaranteed jobs from roofing system manufacturer within 150 miles of the project site. b. Letter from the roofing system manufacturer stating that the Installer has been approved to install No Dollar Limit roofing systems for a minimum of five (5) years

4 c. A certification from the roofing system manufacturer stating the Installer's certification level DELIVERY, STORAGE, AND HANDLING A. Provide strippable plastic protection on prefinished roofing panels for removal after installation. B. Store roofing panels on project site as recommended by manufacturer to minimize damage to panels prior to installation WARRANTY A. Finish Warranty: Provide manufacturer s special warranty covering failure of factory-applied exterior finish on metal roof panels and agreeing to repair or replace panels that show evidence of finish degradation, including significant fading, chalking, cracking, or peeling within specified warranty period of 20 year period from date of Substantial Completion. 1. Warranty from roofing installer is not an acceptable substitute for a factory warranty. B. Waterproofing Warranty: Provide manufacturer s flashing inclusive No Dollar Limit warranty for weathertightness of roofing system and flashing, including agreement to repair or replace roofing that fails to keep out water within specified warranty period of 20 years from date of Substantial Completion. 1. Warranty from a roofing installer is not an acceptable substitut for a factory warranty. PART 2 PRODUCTS 2.01 MANUFACTURERS A. Architectural Roof Panels: Design is based on Tite-Loc and Tite-Loc HS, manufactured by Pac Clad, Petersen Aluminum Corporation. 1. Acceptable manufacturers are: a. AEP Span: b. Architectural Building Components: c. Berridge Manufacturing Company: d. PAC-CLAD, Petersen Aluminum Corporation: B. Polymeric Self Adhering Sheet Underlayment Underlayment 1. Acceptable manufacturers and products are: a. Carlisle Coatings & Waterproofing Inc; CCW WIP 300HT b. Grace Construction Products; Ultra c. Henry Company; Blueskin PE200 HT d. Metal Fab Manufacturing, LLC; MetShield e. Owens Corning; WeatherLock Metal High Temperature Underlayment 2.02 STRUCTURAL ROOF PANELS - BUILDING 723 A. Engineering: Provide panel assemblies designed to safely support design loads at support spacing indicated, with deflection not to exceed 1/180 of the span when tested in accordance with ASTM E Dead Loads: Weight of roofing system. 2. Live Loads: As required by ASCE 7. B. Structural Metal Roofing: Provide complete roofing assemblies, including roof panels, clips, fasteners, connectors, and miscellaneous accessories, tested for conformance to the following minimum standards: 1. Structural Design Criteria: Provide panel assemblies designed to safely support design loads at support spacing indicated, with deflection not to exceed 1/180 of the span when tested in accordance with ASTM E Overall: Complete weathertight system tested and approved in accordance with ASTM

5 E Wind Uplift: Class 90 wind uplift resistance of UL Air Infiltration: Maximum 0.06 cfm/sq ft (1.1 cubic meters/hr/sq m) at air pressure differential of 6.24 lbf/sq ft (300 Pa), when tested according to ASTM E Water Penetration: No water penetration when tested according to procedures and recommended test pressures of ASTM E1646. Perform test immediately following air infiltration test. 6. Thermal Movement: Design system to accommodate without deformation anticipated thermal movement over ambient temperature range of 100 degrees F (56 degrees C). C. Metal Panels: Factory-formed panels with factory-applied finish. 1. Type: Single skin, uninsulated. 2. Steel Panels: a. Prefinished Metal shall be Hot-Dipped Galvanized - ASTM A Grade C G90 Coating A Gauge core steel. b. Profile: 2" high vertical legs shall be spaced at 16" on-center and shall have no exposed fasteners. Pan shall be striated. c. Seam Gasketing: Provide manufacturer's optional Vinyl Weatherseal d. Forming: Panels shall be factory formed and shipped to the jobsite in protective shipping packaging. 3. Length: Full length of roof slope, without lapped horizontal joints. 4. Width: Maximum panel coverage of 16 inches (406 mm). 5. Color: "Cardinal Red", as manufactured by PacClad, Petersen Aluminum Corp. 6. Profile: "Tite-Loc HS" as manufactured by PacClad, Petersen Aluminum Corp ARCHITECTURAL ROOF PANELS - Building 718 A. Architectural Metal Roofing: Provide complete engineered system complying with specified requirements and capable of remaining weathertight while withstanding anticipated movement of substrate and thermally induced movement of roofing system. B. Metal Panels: Factory-formed panels with factory-applied finish. 1. Steel Panels: a. Prefinished Metal shall be Hot-Dipped Galvanized - ASTM A Grade C G90 Coating A Gauge core steel. b. Steel Thickness: 24 gage minimum. c. Profile: 2" high vertical legs shall be spaced at 16" on-center and shall have no exposed fasteners. Pan shall be striated. d. Seam Gasketing: Provide manufacturer's optional Vinyl Weatherseal e. Seaming: Sidelap to be mechanically seamed with a powered double-lock seamer f. Forming: Panels shall be factory formed and shipped to the jobsite in protective shipping packaging. g. Wind Resistance: UL Profile: Standing seam, with minimum 2.0 inch (51 mm) seam height; concealed fastener system for field seaming with special tool. 3. Width: Maximum panel coverage of 16 inches (406 mm). 4. Color: "Cardinal Red", as manufactured by Pac Clad, Petersen Aluminum Corp. 5. Product: "Tite-Loc", as manufactured by Pac Clad, Petersen Aluminum Corp ATTACHMENT SYSTEM A. Concealed System: Provide manufacturer's standard stainless steel concealed anchor clips designed for specific roofing system and engineered to meet performance requirements, including anticipated thermal movement. 1. Roof attachment shall comply with UL wind resistance

6 B. Intermediate Framing: Provide purlin or other framing between roof decking and metal roofing as required by roofing manufacturer to maintain roof uplift and warranty requirements. This requirement varies based on roofing manufacturer SECONDARY FRAMING A. Secondary Framing for Roof Retrofit: Light gauge, asymmetrical section, steel zee profile framing precut with notches that match size, shape and spacing of existing metal roof seams. B. Framing Material: ASTM A 1011/A 1011M, Designation SS steel sheet. 1. Profile: Manufacturer's standard cee, zee, asymmetrical zee, hat channel, plain channel, single slope eave strut, double slope eave strut, and angle. 2. Thickness: 12 gauge, inch (2.657 mm). 3. Finish: Galvanized per ASTM A 653, G90. C. Framing Connectors: Factory-made formed steel sheet, ASTM A653/A653M SS Grade 50, with G60/Z180 hot dipped galvanized coating and factory punched holes PANEL FINISH A. Finish shall be full strength Kynar 500 PVDF resin-based coating, applied by the manufacturer on a continuous coil coating line, with a top side dry film thickness of 0.70 to 0.80 mil over 0.20 to 0.30 mil prime coat, to provide a total topside dry film thickness of 1.0 plus or minus 0.10 mil. Reverse side shall be coated with primer and wash coat of 0.30 mil plus or minus 0.05 mil. Finish shall conform to all tests for adhesion, flexibility, and longevity as specified by the Kynar 500 PVDF resin-based coating supplier UNDERLAYMENT - BUILDING 718 A. Underlayment: Self adhereing, high temperature sheet. 30 to 40 mils thickness minimum consisting of slip resistant polyethelene top surface laminated to a layer of butyl or SBS modified asphalt adhesive. Provide primer as recommended. Underlayment shall be a product acceptable to roofing manufacturer for use with roofing system. 1. Thermal Stability: Stable after testing at 240 deg F; ASTM D Low-Temperature Flexibility: Passes after testing at minus 20 deg F; ASTM D Acceptable Manufacturers: a. Carlisle Coatings & Waterproofing, Product: CCW WIP 300HT b. Grace Construction Products, Product: Ultra c. Henry Company, Product: Blueskin PE200HT d. Metal-Fab Manufacturing, Product: MetSheild e. Owens Corning, Product: WeatherLock Metal High Temperature Underlayment 2.08 INSULATION - BUILDING 718 A. Rigid Insulation: Polyisocyanurate Board insulation, ASTM C 1289, Type II, Class 1, Grade 3. Provide total thickness indicated on drawings in two equal layers, install with staggered joints. Insulation manufacturer shall be acceptable to roofing manufactuer for installation with roofing system ACCESSORIES AND MISCELLANEOUS ITEMS A. Miscellaneous Sheet Metal Items: Provide flashings, gutters, downspouts, trim, moldings, closure strips, preformed crickets, caps, and equipment curbs of the same material, thickness, and finish as used for the roofing panels. Items completely concealed after installation may optionally be made of stainless steel. 1. Steel Thickness: 24 gage minimum. 2. Downspouts: Rectangular profile. a. Provide new pre-cast concrete splashblocks at all downspout locations except where indicated to connect to underground drain system

7 B. Rib and Ridge Closures: Provide prefabricated, close-fitting components of steel with corrosion resistant finish, closed-cell synthetic rubber, neoprene, or PVC, or combination steel and closed-cell foam. C. Sealants: Types acceptable to roofing manufacturer.. 1. Basis of Design: WeatherMaster Metal Roof Sealant as manufactured by Titebond, a Division of Franklin International. Sealant used must be acceptable for use by roofing system manufacturer. 2. Concealed sealant must be non-hardening type. 3. Seam sealant must be factory-applied, non-skinning, non-drying type. 4. Color: Match roof color. D. Vinyl Weatherseal Insert: Roofing manufacturer's standard unit. E. Thermal Insulation at Open Framing: Provide flexible blanket or rigid type, faced with white, flexible, non-dusting vapor retarder tested for maximum flame-spread rating of 50, per ASTM E 84; for installation using spacer blocks. F. Slip Sheet: Manufacturer's recommended slip sheet. G. Rigid Thermal Insulation: H. Snow Guards: Prefabricated, noncorrosive units designed to be installed without penetrating metal roof panels. 1. Provide snow guards at locations shown on the drawings. Locations of snow guards on plan is diagrammatic and meant only to convey areas were snow guards are required. Layout and spacing of snow guards shall be designed by snow guard manufacturer per manufacturer recommendations. 2. Basis of Design Product: Snow Gem, Inc; Original Polycarbonate. Color of unit to match roof FABRICATION A. Panels: Fabricate and finish panels and accessory items at factory, using manufacturer s standard processes as required to achieve specified appearance and performance requirements. B. Joints: Factory-install captive gaskets, sealants, or separator strips at panel joints to provide weathertight seals, eliminate metal-to-metal contact, and minimize noise from panel movements. PART 3 EXECUTION 3.01 EXAMINATION A. Do not begin installation of preformed metal roof panels until substrates have been properly prepared. 1. Inspect roof deck to verify deck is clean and smooth, free of depressions, waves or projections, level to ¼" in 20', and properly sloped to valleys and eaves. 2. Verify roof openings, curbs, pipes, sleeves, ducts or vents through roof are solidly set, cant strips and reglets in place, and nailing strips located. 3. Verify deck is dry and free of snow or ice. Flutes in steel deck to be clean and dry. B. If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding PREPARATION A. Broom clean wood sheathing prior to installation of roofing system. B. Coordinate roofing work with provisions for roof drainage, flashing, trim, penetrations, and other adjoining work to assure that the completed roof will be free of leaks

8 C. Coordinate installation of waterproof membrane over roof sheathing with D. Remove protective film from surface of roof panels immediately prior to installation. Strip film carefully, to avoid damage to prefinished surfaces. E. Separate dissimilar metals by applying a bituminous coating, self-adhering rubberized asphalt sheet, or other permanent method approved by roof panel manufacturer. F. Where metal will be in contact with wood or other absorbent material subject to wetting, seal joints with sealing compound and apply one coat of heavy-bodied bituminous paint INSTALLATION A. Overall: Install roofing system in accordance with approved shop drawings and panel manufacturer's instructions and recommendations, as applicable to specific project conditions. Anchor all components of roofing system securely in place while allowing for thermal and structural movement. 1. Install roofing system with concealed clips and fasteners, except as otherwise recommended by manufacturer for specific circumstances. 2. Minimize field cutting of panels. Where field cutting is absolutely required, use methods that will not distort panel profiles. Use of torches for field cutting is absolutely prohibited. B. Install rigid insulation and substrate boards as recommeded by roofing manufacturer for required wind resistance rating. Stagger joints between insulation layers and substrate board. C. Comply with manufacturers standard instructions and conform to standards set forth in the Architectural Sheet Metal Manual published by SMACNA, in order to achieve a watertight installation. D. Accessories: Install all components required for a complete roofing assembly, including flashings, gutters, downspouts, trim, moldings, closure strips, preformed crickets, caps, equipment curbs, rib closures, ridge closures, and similar roof accessory items. E. Underlayment: Install rigid insulation, substrate board and polymeric underlayment on roof deck before installing preformed metal roof panels. Secure by methods acceptable to roof panel manufacturer. Apply from eaves to ridge in shingle fashion, overlapping horizontal and vertical joints as recommended by underlayment manufacturer. F. Roof Panels: Install panels in strict accordance with manufacturer s instructions, minimizing transverse joints except at junction with penetrations. 1. Install panels in such a manner that horizontal lines are true and level and vertical lines are plumb. 2. Install starter and edge trim before installing roof panels. 3. Form weathertight standing seams incorporating concealed clips, using an automatic mechanical seaming device approved by the panel manufacturer. 4. Incorporate concealed clips at panel joints. 5. Provide sealant tape or other approved joint sealer at lapped panel joints. 6. Install sealant or sealant tape, as recommended by panel manufacturer, at end laps and side joints. 7. Do not allow panels or trim to come into contact with dissimilar materials. 8. Do not allow traffic on completed roof. If required, provide cushioned walk boards. 9. Protect installed roof panels and trim from damage caused by adjacent construction until completion of installation. 10. Remove and replace any panels or components which are damaged beyond successful repair MANUFACTURER'S INSPECTION AND REPORT

9 A. A qualified representative of the roofing system manufacturer that is experienced in roofing installation is required to visit the project site at least once during the roofing installation process to ensure that installer is follwing manufacturer's installation requirements. A copy of the roofing manufacturer's representative's report shall be submitted to the Architect. B. At the completion of the project, a qualified representative of the roofing system manufacturer that is experienced in roofing installation shall visit the project site to view the completed roofing work to determine that finished product complies with manufacturer's requriements. The representative shall provide a list of corrective items (if any) to the roofing installer. A copy of the corrective items list shall be submitted to the Architect as a requirement for final payment CLEANING A. Clean exposed sheet metal work at completion of installation. Remove grease and oil films, excess joint sealer, handling marks, and debris from installation, leaving the work clean and unmarked, free from dents, creases, waves, scratch marks, or other damage to the finish PROTECTION A. Do not permit storage of materials or roof traffic on installed roof panels. Provide temporary walkways or planks as necessary to avoid damage to completed work. Protect roofing until completion of project. B. Touch-up, repair, or replace damaged roof panels or accessories before date of Substantial Completion. END OF SECTION