ࡱ> i bjbj ;\\e.t!t!t!t!t!!!!8!L "!<0f"^"###8$$4%///////1X4/t!*%8$8$*%*%/t!t!##4/P'P'P'*%t!#t!#+/P'*%/P'P':+,#08f%v,/ 00<0,.n5R&n5,n5t!,H*%*%P'*%*%*%*%*%//&v*%*%*%<0*%*%*%*%n5*%*%*%*%*%*%*%*%*%> : : SECTION 074113.16 - STANDING-SEAM METAL ROOF PANELS Maintain Section format, including the UH master spec designation and version date in the center columns of the header and footer. Complete the header and footer with Project information. Revise this Section by deleting and inserting text to meet Project-specific requirements. This Section uses the term "Architect. Change this term to match that used to identify the design professional as defined in the General and Supplementary Conditions. Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed. Delete hidden text after this Section has been edited for the Project. GENERAL RELATED DOCUMENTS Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division01 Specification Sections, apply to this Section. The Contractor's attention is specifically directed, but not limited, to the following documents for additional requirements: The current version of the Uniform General Conditions for Construction Contracts, State of Texas, available on the web site of the Texas Facilities Commission. The 91Ƶs Supplemental General Conditions and Special Conditions for Construction. SUMMARY Section includes standing-seam metal roof panels. PREINSTALLATION MEETINGS Preinstallation Conference: Conduct conference at Project site. Meet with Owner, Architect, Owner's insurer if applicable, metal panel Installer, metal panel manufacturer's representative, structural-support Installer, and installers whose work interfaces with or affects metal panels, including installers of roof accessories and roof-mounted equipment. Review and finalize construction schedule and verify availability of materials, Installer's personnel, equipment, and facilities needed to make progress and avoid delays. Review methods and procedures related to metal panel installation, including manufacturer's written instructions. Examine support conditions for compliance with requirements, including alignment between and attachment to structural members. Review structural loading limitations of deck purlins and rafters during and after roofing. Review flashings, special details, drainage, penetrations, equipment curbs, and condition of other construction that affect metal panels. Review governing regulations and requirements for insurance, certificates, and tests and inspections if applicable. Review temporary protection requirements for metal panel systems during and after installation. Review procedures for repair of metal panels damaged after installation. Document proceedings, including corrective measures and actions required, and furnish copy of record to each participant. ACTION SUBMITTALS Product Data: For each type of product. Include manufacturers installation instructions, construction details, material descriptions, dimensions of individual components and profiles, and finishes for each type of panel and accessory. Retain paragraph and associated subparagraphs below if Project is to be LEED v4 certified. LEED Action Submittals (Projects authorized for LEED certification only): Building Product Disclosure and Optimization: Leadership Extraction Practices Extended Producer Responsibility (EPR): Submit documentation indicating that manufacturers have a take back or recycling program for the product purchased. Wood Products: Certified by Forest Stewardship Council or USGBC approved equivalent.  HYPERLINK "http://www.arcomnet.com/sustainable_design.aspx?topic=146" \h Chain-of-Custody Certificates: For certified wood products. Include statement of costs.  HYPERLINK "http://www.arcomnet.com/sustainable_design.aspx?topic=148" \h Chain-of-Custody Qualification Data: For manufacturer and vendor. Provide details of biobased material per Sustainable Agriculture Networks Sustainable Agriculture Standard or USDA certified biobased product. Indicate cost, location of extraction, manufacture, and purchase of material. Recycled Content: For products having recycled content, indicate percentages by weight of post-consumer and pre-consumer recycled content. Include statement indicating costs for each product having recycled content. Sourcing of Raw Materials: For products that are required to comply with requirements for regional materials, indicating location of material manufacturer and point of extraction, harvest, or recovery for each raw material. Include statement indicating distance to Project, cost for each regional material and the fraction by weight that is considered regional. Product Certificates: For materials manufactured within 100 miles of Project, indicating location of material manufacturer and point of extraction, harvest, or recovery for each raw material. Include distance to Project and cost for each raw material. Laboratory Test Reports: For installation adhesives indicating compliance with requirements for low-emitting materials. Shop Drawings: Include fabrication and installation layouts of metal panels; details of edge conditions, joints (side seam and end laps), panel profiles, corners, anchorages, attachment system, trim, flashings, closures, and accessories; and special details. Distinguish between factory- and field-assembled work. Accessories: Include details of the flashing, trim, gutter, downspouts, roof curbs, and anchorage systems, at a scale of not less than 1-1/2 inches per 12 inches (1:10). Include anchorage spacing at field, perimeter, and corner conditions. Samples for Initial Selection: For each type of metal panel indicated with factory-applied color finishes. Include similar Samples of trim and accessories involving color selection. Samples for Verification: For each type of exposed finish required, prepared on Samples of size indicated below. Metal Panels: 12 inches (305 mm) long by actual panel width. Include clips, fasteners, closures, and other metal panel accessories. Trim and Closures - 12 inches long. Include fasteners and other exposed accessories. Accessories - 12-inch-long samples for each type of accessory INFORMATIONAL SUBMITTALS Qualification Data: For Installer. B. LEED Informational Submittals: Building Product Disclosure and Optimization - Sourcing of Raw Materials: Raw Material Sources and Extraction Reporting: Submit Raw materials supplier corporate Sustainability Reports (CSRs); documenting responsible extraction; including extraction locations, long term ecologically responsible land use, commitment to reducing environmental harms from extraction and manufacturing processes, and a commitment to meeting applicable standards or programs that address responsible sourcing criteria Submit manufacturers' self-declared reports Submit third party verified corporate sustainability reports (CSR) using one of the following frameworks" Global Reporting Initiative (GRI) Sustainability Report Organization for Economic Co-operation and Development (OECD) Guidelines for Multinational Enterprises UN Global Compact ISO 26000 USGBC approved program. Building Product Disclosure and Optimization - Material Ingredients Material Ingredient Optimization: Submit manufacturer's Environmental Product Declaration (EPD) or at least one of the following: GreenScreen V1.2 Benchmark: Third party report prepared by a licensed GreenScreen List Translator, or a full GreenScreen Assessment. Cradle to Cradle: Manufacturer's published literature for the product bearing the Cradle to Cradle logo. International Alternative Compliance Path - REACH Optimization Declare: Manufacturer's completed Product Declaration Form Other programs approved by USGBC Product Manufacturer Supply Chain Optimization: Submit documentation from manufacturers for products that go beyond material ingredient optimization as follows: Are sourced from product manufacturers who engage in validated and robust safety, health, hazard, and risk programs which at a minimum document at least 99percent (by weight) of the ingredients used to make the building product or building material, and Are sourced from product manufacturers with independent third party verification of their supply chain that at a minimum verifies: Processes are in place to communicate and transparently prioritize chemical ingredients along the supply chain according to available hazard, exposure and use information to identify those that require more detailed evaluation Processes are in place to identify, document, and communicate information on health, safety and environmental characteristics of chemical ingredients Processes are in place to implement measures to manage the health, safety and environmental hazard and risk of chemical ingredients Processes are in place to optimize health, safety and environmental impacts when designing and improving chemical ingredients Processes are in place to communicate, receive and evaluate chemical ingredient safety and stewardship information along the supply chain Safety and stewardship information about the chemical ingredients is publicly available from all points along the supply chain. Product Test Reports: For each product, for tests performed by a qualified testing agency. Field quality-control reports. Sample Warranties: For special warranties. CLOSEOUT SUBMITTALS Maintenance Data: For metal panels to include in maintenance manuals. Warranties: Single Source Twenty 20 Year Metal Roof Total System Warranty Twenty (20) year manufacturers sheet metal finish warranty QUALITY ASSURANCE Qualifications: Installer Qualifications: An entity that employs installers and supervisors who are trained and approved by manufacturer. Testing Agency Qualifications - Qualified according to ASTME329 for testing indicated. Source Limitations - Obtain each type of metal roof panels from single source from single manufacturer Mockups - Build in-place mockups to verify selections made under sample submittals and to demonstrate aesthetic effects and set quality standards for fabrication and installation. Build mockup of typical roof eave,including fascia, and downspout as shown on the Drawings, including insulation, attachments, and accessories. Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless Architect/Engineer specifically approves such deviations in writing. Approved mockups shall become part of the completed Work if undisturbed at time of Substantial Completion. DELIVERY, STORAGE, AND HANDLING Deliver components, metal panels, and other manufactured items so as not to be damaged or deformed. Package metal panels for protection during transportation and handling. Unload, store, and erect metal panels in a manner to prevent bending, warping, twisting, and surface damage. Stack metal panels horizontally on platforms or pallets, covered with suitable weathertight and ventilated covering. Store metal panels to ensure dryness, with positive slope for drainage of water. Do not store metal panels in contact with other materials that might cause staining, denting, or other surface damage. Retain strippable protective covering on metal panels during installation. FIELD CONDITIONS Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit assembly of metal panels to be performed according to manufacturers' written instructions and warranty requirements. COORDINATION Coordinate sizes and locations of roof curbs, equipment supports, and roof penetrations with actual equipment provided. Coordinate metal panel installation with rain drainage work, flashing, trim, construction of soffits, and other adjoining work to provide a leakproof, secure, and noncorrosive installation. WARRANTY Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of metal panel systems that fail in materials or workmanship within specified warranty period. Failures include, but are not limited to, the following: Structural failures including rupturing, cracking, or puncturing. Deterioration of metals and other materials beyond normal weathering. Warranty Period: Twenty (20) years from date of Substantial Completion. Special Warranty on Panel Finishes: Manufacturer's standard form in which manufacturer agrees to repair finish or replace metal panels that show evidence of deterioration of factory-applied finishes within specified warranty period. Exposed Panel Finish: Deterioration includes, but is not limited to, the following: Color fading more than 5Hunter units when tested according to ASTMD2244. Chalking in excess of a No.8 rating when tested according to ASTMD4214. Cracking, checking, peeling, or failure of paint to adhere to bare metal. Finish Warranty Period: Thirty (30) years from date of Substantial Completion. Special Weather tightness Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace standing-seam metal roof panel assemblies that fail to remain weathertight, including leaks, within specified warranty period. Warranty Period: Twenty (20) years from date of Substantial Completion. PRODUCTS PERFORMANCE REQUIREMENTS 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. Structural Performance: Provide metal panel systems capable of withstanding the effects of the following loads, based on testing according to ASTM E 1592: Wind Loads: UL-580 Class 90 wind uplift, or as indicated on Drawings. Impact Resistance: UL 2218 rated. Air Infiltration: Air Leakage of not more than 0.06 cfm/sq. ft. (0.3L/ sq. m) when tested according to ASTM E 1680 or ASTM E 283 at the following test pressure difference: Test Pressure Difference: 1.57 lbf/sq. ft. (300 Pa). Water Penetration Under Static Pressure: No water penetration when tested according to ASTM E 1646 or ASTM E 331 at the following test pressure difference: Test Pressure Difference: 2.86 lbf/sq. ft. (300 Pa). Hydrostatic-Head Resistance - No water penetration when tested according to ASTME2140. Wind Uplift Resistance: Provide metal roof panel assemblies that comply with UL 580 for wind uplift resistance class indicated. Uplift Rating: Minimum UL Class 90, or in accordance with the design wind pressures on the Drawings. STANDING-SEAM METAL ROOF PANELS General: Provide factory-formed metal roof panels designed to be installed by lapping and interconnecting raised side edges of adjacent panels with joint type indicated and mechanically attaching panels to supports using concealed clips in side laps. Include clips, cleats, pressure plates, and accessories required for weathertight installation. Steel Panel Systems: Unless more stringent requirements are indicated, comply with ASTME1514. Aluminum Panel Systems: Unless more stringent requirements are indicated, comply with ASTME1637. University design standard is based on factory formed double-lock, architectural standing seam metal roof panels. System consists of roll formed steel with vertical ribs at panel edges and a flat, smooth pan between ribs; designed for sequential installation by mechanically attaching panels to supports using concealed clips located under one side of panels, engaging opposite edge of adjacent panels, and snapping panels together. Manufacturers: Subject to compliance with requirements, provide products by one of the following :  HYPERLINK "http://www.specagent.com/LookUp/?uid=123456836625&mf=04&src=wd" Petersen Aluminum Corporation. Architectural Building Components. ATAS International, Inc. Berridge Manufacturing Company. McElroy Metal. Substitutions: See Section 01 2500 Substitution Procedures. Metallic-Coated Steel Sheet: Zinc-coated (galvanized) steel sheet complying with ASTMA653/A653M, G90 (Z275) coating designation, or aluminum-zinc alloy-coated (galvalume) steel sheet complying with ASTMA792/A792M, ClassAZ50 (ClassAZM150) coating designation; structural quality. Pre-finished by the coil-coating process to comply with ASTMA755/A755M. Nominal Thickness: 0.0239 inch (0.56 mm). Texture: Smooth. Color: As selected by Architect from manufacturer's full range. Minimum Solar Reflectance Index: Initial 39 for slopes greater than 2 in 12; initial 82 for slopes less than or equal to 2 in 12. Length: Full length of roof slope, without lapped horizontal joints. Width: Maximum panel coverage of 20 inches (508 mm). Profile: Standing seam, with minimum 1.5 inch (38 mm) seam height; concealed fastener system lapped seam in standing seam profile. UNDERLAYMENT MATERIALS Self-Adhering, High-Temperature Underlayment: Provide self-adhering, cold-applied, sheet underlayment, a minimum of 36 mils (0.76 mm) thick, consisting of slip-resistant, polyethylene-film top surface laminated to a layer of butyl or SBS-modified asphalt adhesive, with release-paper backing. Provide primer when recommended by underlayment manufacturer. Thermal Stability: Stable after testing at 240 degF (116 degC); ASTMD1970. Low-Temperature Flexibility: Passes after testing at minus 20 degF (29 degC); ASTMD1970. Roll Width: 36 inches. Roll Length: 75 feet.  HYPERLINK "http://www.specagent.com/LookUp/?ulid=6911&mf=04&src=wd" Products: Subject to compliance with requirements, provide the following :  HYPERLINK "http://www.specagent.com/LookUp/?uid=123456836673&mf=04&src=wd" Grace Construction Products, a unit of W. R. Grace & Co.; Grace Ice and Water Shield HT. Substitutions: See Section 01 2500 Substitution Procedures. MISCELLANEOUS MATERIALS Miscellaneous Metal Subframing and Furring: ASTMC645; cold-formed, metallic-coated steel sheet, ASTMA653/A653M, G90 (Z275 hot-dip galvanized) coating designation or ASTMA792/A792M, ClassAZ50 (ClassAZM150) coating designation unless otherwise indicated. Provide manufacturer's standard sections as required for support and alignment of metal panel system. Panel Accessories: Provide components required for a complete, weathertight panel system including trim, copings, fasciae, mullions, sills, corner units, clips, flashings, sealants, gaskets, fillers, closure strips, and similar items. Self-tapping screws, bolts, nuts, self-locking rivets and bolts, end-welded studs, and other suitable fasteners designed to withstand design loads. Match material and finish of metal panels unless otherwise indicated. Closures: Provide closures at eaves and ridges, fabricated of same metal as metal panels. Backing Plates: Provide metal backing plates at panel end splices, fabricated from material recommended by manufacturer. Closure Strips: Closed-cell, expanded, cellular, rubber or crosslinked, polyolefin-foam or closed-cell laminated polyethylene; minimum 1-inch- (25-mm-) thick, flexible closure strips; cut or pre-molded to match metal panel profile. Provide closure strips where indicated or necessary to ensure weathertight construction. Flashing and Trim: Provide flashing and trim formed from same material as metal panels as required to seal against weather and to provide finished appearance. Locations include, but are not limited to, eaves, rakes, corners, bases, framed openings, ridges, fasciae, and fillers. Finish flashing and trim with same finish system as adjacent metal panels. Gutters: Formed from same material as roof panels, complete with end pieces, outlet tubes, and other special pieces as required. Fabricate in minimum 96-inch- (2400-mm-) long sections, of size and metal thickness according to SMACNA's "Architectural Sheet Metal Manual." Furnish gutter supports spaced a maximum of 36 inches (914 mm) o.c., fabricated from same metal as gutters. Provide wire ball strainers of compatible metal at outlets. Finish gutters to match roof fascia and rake trim. Downspouts: Formed from same material as roof panels. Fabricate in 10-foot- (3-m-) long sections, complete with formed elbows and offsets, of size and metal thickness according to SMACNA's "Architectural Sheet Metal Manual." Finish downspouts to match gutters. Roof Curbs: Fabricated from same material as roof panels, 0.048-inch (1.2-mm) nominal thickness; with bottom of skirt profiled to match roof panel profiles and with welded top box and integral full-length cricket. Fabricate curb sub-framing of 0.060-inch (1.52-mm-) nominal thickness, angle-, C-, or Z-shaped steel sheet. Fabricate curb and subframing to withstand indicated loads of size and height indicated. Finish roof curbs to match metal roof panels. Insulate roof curb with 1-inch (25-mm-) thick, rigid insulation. Panel Fasteners: Self-tapping screws designed to withstand design loads. Panel Sealants: Provide sealant type recommended by manufacturer that are compatible with panel materials, are nonstaining, and do not damage panel finish. Sealant Tape: Pressure-sensitive, 100 percent solids, gray polyisobutylene compound sealant tape with release-paper backing. Provide permanently elastic, nonsag, nontoxic, nonstaining tape 1/2 inch (13 mm) wide and 1/8 inch (3 mm) thick. Joint Sealant: ASTMC920; elastomeric polyurethane or silicone sealant; of type, grade, class, and use classifications required to seal joints in metal panels and remain weathertight; and as recommended in writing by metal panel manufacturer. Butyl-Rubber-Based, Solvent-Release Sealant: ASTMC1311. FABRICATION General: Fabricate and finish metal panels and accessories at the factory, by manufacturer's standard procedures and processes, as necessary to fulfill indicated performance requirements demonstrated by laboratory testing. Comply with indicated profiles and with dimensional and structural requirements. Provide panel profile, including major ribs and intermediate stiffening ribs, if any, for full length of panel. Fabricate metal panel joints with factory-installed captive gaskets or separator strips that provide a weathertight seal and prevent metal-to-metal contact, and that minimize noise from movements. Sheet Metal Flashing and Trim: Fabricate flashing and trim to comply with manufacturer's recommendations and recommendations in SMACNA's "Architectural Sheet Metal Manual" that apply to design, dimensions, metal, and other characteristics of item indicated. Form exposed sheet metal accessories that are without excessive oil canning, buckling, and tool marks and that are true to line and levels indicated, with exposed edges folded back to form hems. Seams for Aluminum: Fabricate nonmoving seams with flat-lock seams. Form seams and seal with epoxy seam sealer. Rivet joints for additional strength. Seams for Other Than Aluminum: Fabricate nonmoving seams in accessories with flat-lock seams. Tin edges to be seamed, form seams, and solder. Sealed Joints: Form non-expansion, but movable, joints in metal to accommodate sealant and to comply with SMACNA standards. Conceal fasteners and expansion provisions where possible. Exposed fasteners are not allowed on faces of accessories exposed to view. Fabricate cleats and attachment devices from same material as accessory being anchored or from compatible, noncorrosive metal recommended in writing by metal panel manufacturer. Size: As recommended by SMACNA's "Architectural Sheet Metal Manual" or metal panel manufacturer for application, but not less than thickness of metal being secured. FINISHES Comply with NAAMMs Metal Finishes Manual for Architectural and Metal Products for recommendations for applying and designating finishes. Protect mechanical and painted finishes on exposed surfaces from damage by applying a strippable, temporary protective covering before shipping. Appearance of Finished Work: Variations in appearance of abutting or adjacent pieces are acceptable if they are within one-half of the range of approved Samples. Noticeable variations in same piece are unacceptable. Variations in appearance of other components are acceptable if they are within the range of approved Samples and are assembled or installed to minimize contrast. Steel Panels and Accessories: Three-Coat Fluoropolymer: AAMA621. Fluoropolymer finish containing not less than 70 percent PVDF resin by weight in both color coat and clear topcoat. Prepare, pretreat, and apply coating to exposed metal surfaces to comply with coating and resin manufacturers' written instructions. EXECUTION EXAMINATION Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances, metal panel supports, and other conditions affecting performance of the Work. Examine primary and secondary roof framing to verify that rafters, purlins, angles, channels, and other structural panel support members and anchorages have been installed within alignment tolerances required by metal roof panel manufacturer. Examine solid roof sheathing to verify that sheathing joints are supported by framing or blocking and that installation is within flatness tolerances required by metal roof panel manufacturer. Verify that air- or water-resistive barriers have been installed over sheathing or backing substrate to prevent air infiltration or water penetration. Examine roughing-in for components and systems penetrating metal panels to verify actual locations of penetrations relative to seam locations of metal panels before installation. Proceed with installation only after unsatisfactory conditions have been corrected. PREPARATION Miscellaneous Supports: Install subframing, furring, and other miscellaneous panel support members and anchorages according to ASTMC754 and metal panel manufacturer's written recommendations. UNDERLAYMENT INSTALLATION Self-Adhering Sheet Underlayment: Apply primer if required by manufacturer. Comply with temperature restrictions of underlayment manufacturer for installation. Apply at locations indicated below, wrinkle free, in shingle fashion to shed water, and with end laps of not less than 6 inches (152 mm) staggered 24 inches (610 mm) between courses. Overlap side edges not less than 3-1/2 inches (90 mm).Extend underlayment into gutter trough. Roll laps with roller. Cover underlayment within 14 days. Apply over the entire roof surface. Apply over the roof area indicated below: Valleys, from lowest point to highest point, for a distance on each side of 18 inches (460 mm). Overlap ends of sheets not less than 6 inches (152 mm). Hips and ridges for a distance on each side of 12 inches (305 mm). METAL PANEL INSTALLATION General: Install metal panels according to manufacturer's written instructions in orientation, sizes, and locations indicated. Install panels perpendicular to supports unless otherwise indicated. Anchor metal panels and other components of the Work securely in place, with provisions for thermal and structural movement. Shim or otherwise plumb substrates receiving metal panels. Flash and seal metal panels at perimeter of all openings. Fasten with self-tapping screws. Do not begin installation until air- or water-resistive barriers and flashings that will be concealed by metal panels are installed. Commence metal roof panel installation and install one section in presence of factory-authorized representative. Field cutting of metal panels by torch is not permitted. Install screw fasteners in predrilled holes. Locate and space fastenings in uniform vertical and horizontal alignment. Install flashing and trim as metal panel work proceeds. Locate panel splices over, but not attached to, structural supports. Stagger panel splices and end laps to avoid a four-panel lap splice condition. Align bottoms of metal panels and fasten with blind rivets, bolts, or self-tapping screws. Fasten flashings and trim around openings and similar elements with self-tapping screws. Provide metal closures at rake walls and each side of ridge caps. Install ridge caps as metal roof panel work proceeds. End Splices - panel end splices are not allowed. Install metal flashing to allow moisture to run over and off metal roof panels. Provide weathertight escutcheons for pipe- and conduit-penetrating panels. Fasteners: Steel Panels: Use stainless-steel fasteners for surfaces exposed to the exterior; use galvanized-steel fasteners for surfaces exposed to the interior. Aluminum Panels: Use aluminum or stainless-steel fasteners for surfaces exposed to the exterior; use aluminum or galvanized-steel fasteners for surfaces exposed to the interior. Copper Panels: Use copper, stainless-steel, or hardware-bronze fasteners. Stainless-Steel Panels: Use stainless-steel fasteners. Anchor Clips: Anchor metal roof panels and other components of the Work securely in place, using manufacturer's approved fasteners according to manufacturers' written instructions. Metal Protection: Where dissimilar metals contact each other or corrosive substrates, protect against galvanic action by painting contact surfaces with bituminous coating, by applying rubberized-asphalt underlayment to each contact surface, or as recommended in writing by metal panel manufacturer. Standing-Seam Metal Roof Panel Installation: Fasten metal roof panels to supports with concealed clips at each standing-seam joint at location, spacing, and with fasteners recommended in writing by manufacturer. Install clips to supports with self-tapping fasteners. Install pressure plates at locations indicated in manufacturer's written installation instructions. Snap Joint: Nest standing seams and fasten together by interlocking and completely engaging factory-applied sealant. Watertight Installation: Apply a continuous ribbon of sealant or tape to seal joints of metal panels, using sealant or tape as recommend in writing by manufacturer as needed to make panels watertight. Provide sealant or tape between panels and protruding equipment, vents, and accessories. At panel splices, nest panels with minimum 6-inch (152-mm) end lap, sealed with sealant and fastened together by interlocking clamping plates. Clipless Metal Panel Installation: Fasten metal panels to supports with screw fasteners at each lapped joint at location and spacing recommended by manufacturer. Accessory Installation: Install accessories with positive anchorage to building and weathertight mounting, and provide for thermal expansion. Coordinate installation with flashings and other components. Install components required for a complete metal panel system including trim, copings, corners, seam covers, flashings, sealants, gaskets, fillers, closure strips, and similar items. Provide types indicated by metal roof panel manufacturers; or, if not indicated, types recommended by metal roof panel manufacturer. Flashing and Trim: Comply with performance requirements, manufacturer's written installation instructions, and SMACNA's "Architectural Sheet Metal Manual." Provide concealed fasteners where possible, and set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently watertight and weather resistant. Install exposed flashing and trim that is without buckling and tool marks, and that is true to line and levels indicated, with exposed edges folded back to form hems. Install sheet metal flashing and trim to fit substrates and achieve waterproof and weather-resistant performance. Expansion Provisions: Provide for thermal expansion of exposed flashing and trim. Space movement joints at a maximum of 10 feet (3m) with no joints allowed within 24 inches (610 mm) of corner or intersection. Where lapped expansion provisions cannot be used or would not be sufficiently weather resistant and waterproof, form expansion joints of intermeshing hooked flanges, not less than 1 inch (25 mm) deep, filled with mastic sealant (concealed within joints). Gutters: Join sections with riveted and soldered or lapped and sealed joints. Attach gutters to eave with gutter hangers spaced not more than 36 inches (914 mm) o.c. using manufacturer's standard fasteners. Provide end closures and seal watertight with sealant. Provide for thermal expansion. Downspouts: Join sections with telescoping joints. Provide fasteners designed to hold downspouts securely 1 inch (25 mm) away from walls; locate fasteners at top and bottom and at approximately 60 inches (1524 mm) o.c. in between. Connect downspouts to underground drainage system indicated. Roof Curbs: Install flashing around bases where they meet metal roof panels. Pipe Flashing: Form flashing around pipe penetration and metal roof panels. Fasten and seal to metal roof panels as recommended by manufacturer. Use deck-tite type graduated rubber flashing at pipes and lightning protection penetrations. Do not place flashing at standing seams. Coordinate roof penetrations at the field of the panel away from seams. Joint Sealers - Install gaskets, joint fillers, and sealants where indicated and where required for weatherproof performance of metal roof panel assemblies. Provide types of gaskets, fillers, and sealants indicated or, if not indicated, types recommended by metal roof panel manufacturer. Seal side joints where recommended by metal roof panel manufacturer. Prepare joints and apply sealants to comply with requirements in Section 07 9200 Joint Sealants. FIELD QUALITY CONTROL Manufacturer's Field Service: Engage a factory-authorized service representative to test and inspect metal roof panel installation, including accessories. Report results in writing. Remove and replace applications of metal roof panels where tests and inspections indicate that they do not comply with specified requirements. Additional tests and inspections, at Contractor's expense, are performed to determine compliance of replaced or additional work with specified requirements. Prepare test and inspection reports. CLEANING AND PROTECTION Remove temporary protective coverings and strippable films, if any, as metal panels are installed, unless otherwise indicated in manufacturer's written installation instructions. On completion of metal panel installation, clean finished surfaces as recommended by metal panel manufacturer. Maintain in a clean condition during construction. Replace metal panels that have been damaged or have deteriorated beyond successful repair by finish touchup or similar minor repair procedures. 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