USACE / NAVFAC / AFCESA /NASA UFGS-07 41 13 (November 2008) ----------------------------- Preparing Activity: NAVFAC Superseding UFGS-07 41 13 (January 2008) UNIFIED FACILITIES GUIDE SPECIFICATIONS References are in agreement with UMRL dated January 2009 SECTION 07 41 13 METAL ROOF PANELS 11/08 NOTE: This guide specification covers the requirements for both factory color and mill finish aluminum or steel non-structural metal roofing. Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items, choose applicable items(s) or insert appropriate information. Remove information and requirements not required in respective project, whether or not brackets are present. Comments and suggestions on this guide specification are welcome and should be directed to the technical proponent of the specification. A listing of technical proponents, including their organization designation and telephone number, is on the Internet. Recommended changes to a UFGS should be submitted as a Criteria Change Request (CCR). This guide specification includes tailoring options for NASA, NAVFAC, and USACE,. Selection or deselection of a tailoring option will include or exclude that option in the section, but editing the resulting section to fit the project is still required. NOTE: Non-Structural Metal Roofing is also referred to as architectural metal roofing or hydrokinetic metal roofing. Seam profiles include standing seam and lapped seam. Apply roof panels over a solid substrate (roof deck) with an appropriate underlayment. This specification may also be used for metal roof panels on auxiliary structures including light storage and open air shed roofs with some modification for application of corrugated or fluted panels over support structure without decking. Structural standing seam panels, insulated sandwich panels and special systems such as copper, stainless steel, or terne metal are not covered in this guide specification. Coordinate this section with other system components specifications such as framing, decking, insulation and sheet metal flashing. Also coordinate with the criteria of Unified Facilities Criteria (UFC) 3-110-06, "Design: Roofing" as it relates to the specific project and Service Exceptions indicated therein. For Army projects also refer to TI 809-29, "Structural Considerations for Metal Roofing". PART 1 GENERAL 1.1 REFERENCES NOTE: This paragraph is used to list the publications cited in the text of the guide specification. The publications are referred to in the text by basic designation only and listed in this paragraph by organization, designation, date, and title. Use the Reference Wizard's Check Reference feature when you add a RID outside of the Section's Reference Article to automatically place the reference in the Reference Article. Also use the Reference Wizard's Check Reference feature to update the issue dates. References not used in the text will automatically be deleted from this section of the project specification when you choose to reconcile references in the publish print process. The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only. ALUMINUM ASSOCIATION (AA)AA ADM1(2005; Errata 2005) Aluminum Design ManualAMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)AISC 341(2005; Supp 2005) Seismic Provisions for Structural Steel BuildingsAMERICAN IRON AND STEEL INSTITUTE (AISI)AISI SG03-3(2002) Cold-Formed Steel Design Manual SetAISI/COS/NASPEC(2001, Supplement 2004) North American Specification for the Design of Cold-Formed Steel Structural MembersAMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)ASCE/SEI 7-05(2006) Minimum Design Loads for Buildings and Other Structures, Including Supplement No. 1AMERICAN WELDING SOCIETY (AWS)AWS A5.1/A5.1M(2004; Errata 2004) Carbon Steel Electrodes for Shielded Metal Arc WeldingAWS D1.1/D1.1M(2008) Structural Welding Code - SteelAWS D1.2/D1.2M(2008) Structural Welding Code - AluminumASTM INTERNATIONAL (ASTM)ASTM A 1008/A 1008M(2008a) Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake HardenedASTM A 123/A 123M(2008) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel ProductsASTM A 36/A 36M(2008) Standard Specification for Carbon Structural SteelASTM A 424(2006) Standard Specification for Steel Sheet for Porcelain EnamelingASTM A 463/A 463M(2006) Standard Specification for Steel Sheet, Aluminum-CoatedASTM A 653/A 653M(2008) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip ProcessASTM A 755/A 755M(2003; R 2008) Standard Specification for Steel Sheet, Metallic Coated by the Hot-Dip Process and Prepainted by the Coil-Coating Process for Exterior Exposed Building ProductsASTM A 792/A 792M(2008) Standard Specification for Steel Sheet, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip ProcessASTM A 924/A 924M(2008a) Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip ProcessASTM B 117(2007a) Standing Practice for Operating Salt Spray (Fog) ApparatusASTM B 209(2007) Standard Specification for Aluminum and Aluminum-Alloy Sheet and PlateASTM B 209M(2007) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)ASTM C 286(1999; 2004) Standard Terminology Relating to Porcelain Enamel and Ceramic-Metal SystemsASTM C 552(2007) Standard Specification for Cellular Glass Thermal InsulationASTM C 553(2008) Standard Specification for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial ApplicationsASTM C 792(2004; R 2008) Effects of Heat Aging on Weight Loss, Cracking, and Chalking of Elastomeric SealantsASTM C 920(2008) Standard Specification for Elastomeric Joint SealantsASTM D 1056(2007) Standard Specification for Flexible Cellular Materials - Sponge or Expanded RubberASTM D 1308(2002; R 2007) Effect of Household Chemicals on Clear and Pigmented Organic FinishesASTM D 1654(2008) Evaluation of Painted or Coated Specimens Subjected to Corrosive EnvironmentsASTM D 1667(2005) Flexible Cellular Materials - Poly (Vinyl Chloride) Foam (Closed-Cell)ASTM D 1970(2008) Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam ProtectionASTM D 2244(2007) Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color CoordinatesASTM D 2247(2002) Testing Water Resistance of Coatings in 100% Relative HumidityASTM D 226(2006) Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and WaterproofingASTM D 2794(1993; R 2004) Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)ASTM D 3359(2008) Measuring Adhesion by Tape TestASTM D 3363(2005) Film Hardness by Pencil TestASTM D 4214(2007) Standard Test Method for Evaluating the Degree of Chalking of Exterior Paint FilmsASTM D 4587(2005) Standard Practice for Fluorescent UV-Condensation Exposures of Paint and Related CoatingsASTM D 4637(2008) EPDM Sheet Used in Single-Ply Roof MembraneASTM D 522(1993a; R 2008) Mandrel Bend Test of Attached Organic CoatingsASTM D 523(2008) Standard Test Method for Specular GlossASTM D 5894(2005) Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating Exposures in a Fog/Dry Cabinet and a UV/Condensation Cabinet)ASTM D 610(2008) Evaluating Degree of Rusting on Painted Steel SurfacesASTM D 714(2002e1) Evaluating Degree of Blistering of PaintsASTM D 822(2001; R 2006) Filtered Open-Flame Carbon-Arc Exposures of Paint and Related CoatingsASTM D 968(2005e1) Abrasion Resistance of Organic Coatings by Falling AbrasiveASTM E 1592(2005) Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure DifferenceASTM E 2140(2001) Standard Test Method for Water Penetration of Metal Roof Panel Systems by Static Water Pressure HeadASTM E 84(2008a) Standard Test Method for Surface Burning Characteristics of Building MaterialsASTM G 23(1996) Operating Light-Exposure Apparatus (Carbon-Arc Type) With and Without Water for Exposure of Nonmetallic MaterialsFM GLOBAL (FM)FM 4471(1995) Class I Panel RoofsMETAL BUILDING MANUFACTURERS ASSOCIATION (MBMA)MBMA RSDM(2000) Metal Roofing Systems Design ManualNATIONAL ROOFING CONTRACTORS ASSOCIATION (NRCA)NRCA 0405(2001; R 2003, 5th Ed) Roofing and Waterproofing ManualNRCA ASMMRM(2006) Architectural Sheet Metal and Metal Roofing ManualPORCELAIN ENAMEL INSTITUTE (PEI)PEI 1001(1996) Specification for Architectural Porcelain Enamel (ALS-100)PEI CG-3(2005) Color Guide for Architectural Porcelain EnamelSHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION (SMACNA)SMACNA 1793(2006) Architectural Sheet Metal Manual, Sixth Edition, Second PrintingTHE SOCIETY FOR PROTECTIVE COATINGS (SSPC)SSPC Paint 12(1982; E 2000) Paint Specification No. 12 Cold-Applied Asphalt Mastic (Extra Thick Film)U.S. NAVAL FACILITIES ENGINEERING COMMAND (NAVFAC)NAVFAC A-A-50570(1997) Paint, Water-Borne, Acrylic Or Modified Acrylic, Semigloss, For Metal SurfacesUNDERWRITERS LABORATORIES (UL)UL 580(2006) Tests for Uplift Resistance of Roof AssembliesUL Bld Mat Dir(2008) Building Materials Directory1.2 DESCRIPTION OF METAL ROOF SYSTEM 1.2.1 Performance Requirements Steel panels and accessory components must conform to the following standards: ASTM A 1008/A 1008M ASTM A 123/A 123M ASTM A 36/A 36M [ASTM A 424, ASTM C 286, PEI 1001, PEI CG-3 for Porcelain and Ceramic Enameling ][ASTM A 463/A 463M for aluminum coated steel sheet ][ASTM A 755/A 755M for metallic coated steel sheet for exterior coil prepainted applications.] [ASTM A 924/A 924M for metallic coated steel sheet ]ASTM D 522 for applied coatings UL Bld Mat Dir 1.2.1.1 Hydrostatic Head Resistance No water penetration when tested according to ASTM E 2140. Submit _{leakage test report} upon completion of installation. 1.2.1.2 _{Wind Uplift Resistance} Provide metal roof panel system that conform to the requirements of ASTM E 1592 and UL 580. Uplift force due to wind action governs the design for panels. Submit _{wind uplift test report} prior to commencing installation. Roof system and attachments must resist the wind loads as determined by ASCE/SEI 7-05, in pounds per square foot. Metal roof panels and component materials must also comply with the requirements in FM 4471 as part of a panel roofing system as listed in Factory Mutual Guide (FMG) "Approval Guide" for class 1 or noncombustible construction, as applicable. Identify all materials with FMG markings. 1.3 SUBMITTALS NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the following list to reflect only the submittals required for the project. Submittals should be kept to the minimum required for adequate quality control. A “G” following a submittal item indicates that the submittal requires Government approval. Some submittals are already marked with a “G”. Only delete an existing “G” if the submittal item is not complex and can be reviewed through the Contractor’s Quality Control system. Only add a “G” if the submittal is sufficiently important or complex in context of the project. For submittals requiring Government approval on Army projects, a code of up to three characters within the submittal tags may be used following the "G" designation to indicate the approving authority. Codes for Army projects using the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO" for District Office (Engineering Division or other organization in the District Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project Office. Codes following the "G" typically are not used for Navy, Air Force, and NASA projects. Choose the first bracketed item for Navy, Air Force and NASA projects, or choose the second bracketed item for Army projects. Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are [for Contractor Quality Control approval.][for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES: _{SD-02 Shop Drawings Roofing Panels}[; _G][; _{G, [_____]}] _{Flashing and Accessories}[; _G][; _{G, [_____]}] _{Gutter/Downspout Assembly}[; _G][; _{G, [_____]}] _{SD-03 Product Data} NOTE: Edit the product data submission requirements as necessary for the system specified. Include bracketed requirements as applicable to the system being specified. Submit manufacturer's catalog data for the following items: _{Roof panels}[; _G][; _{G, [_____]}] [_{FACTORY-APPLIED COLOR FINISH}[; _G][; _{G, [_____]}]] _Accessories[; _G][; _{G, [_____]}] _Fasteners[; _G][; _{G, [_____]}] _{Pressure Sensitive Tape}[; _G][; _{G, [_____]}] _{UNDERLAYMENTS}[; _G][; _{G, [_____]}] _{Gaskets and Sealing/Insulating Compounds}[; _G][; _{G, [_____]}] [_{Coil Stock}[; _G][; _{G, [_____]}]] _{Aluminized Steel Repair Paint}[; _G][; _{G, [_____]}] _{Enamel Repair Paint}[; _G][; _{G, [_____]}] _{Galvanizing Repair Paint}[; _G][; _{G, [_____]}] _{SD-04 Samples Roof Panels}[; _G][; _{G, [_____]}] _{Factory-applied Color Finish}, samples, 23 cm 9 inch lengths, full width[; _G][; _{G, [_____]}] _Accessories[; _G][; _{G, [_____]}] _Fasteners[; _G][; _{G, [_____]}] _{Gaskets and Sealant/Insulating Compounds}[; _G][; _{G, [_____]}] _{SD-05 Design Data} NOTE: Coordinate with requirements of "Wind Uplift" paragraph. Include bracketed requirement where non-rated systems may be permissible. _{Wind Uplift Resistance}[; _G][; _{G, [_____]}] _{SD-06 Test Reports Leakage Test Report}[; _G][; _{G, [_____]}] _{Wind Uplift Test Report}[; _G][; _{G, [_____]}] _{Fire Rating Test Report}[; _G][; _{G, [_____]}] _{Factory Finish and Color Performance Requirements}[; _G][; _{G, [_____]}] _{SD-07 Certificates Roof Panels}[; _G][; _{G, [_____]}] _{Coil stock compatibility}[; _G][; _{G, [_____]}] [_{Self-Adhering Modified Bitumen Underlayment}[; _G][; _{G, [_____]}]] _{Qualification of Manufacturer}[; _G][; _{G, [_____]}] _{Qualification of Applicator}[; _G][; _{G, [_____]}] _{SD-08 Manufacturer's Instructions} [INSULATION[; _G][; _{G, [_____]}] ] _{INSTALLATION MANUAL}[; _G][; _{G, [_____]}] [_{SD-09 Manufacturer's Field Reports} [_{Manufacturer's Field Inspection Reports}[; _G][; _{G, [_____]}]] ] _{SD-11 Closeout Submittals Warranties}[; _G][; _{G, [_____]}] _{Information Card}[; _G][; _{G, [_____]}] [_{Date Of Installation Wall-Mounted Placard}[; _G][; _{G, [_____]}]] 1.4 QUALITY ASSURANCE 1.4.1 _{Qualification of Manufacturer} NOTE: Specify 5 years manufacturer experience unless directed otherwise by the Government. Submit documentation verifying metal roof panel manufacturer has been in the business of manufacturing metal roof panels for a period of not less than 5 [_____] years. Manufacturer must also provide engineering services by an authorized engineer, currently licensed in the geographic area of the project, with a minimum of five (5) years experience as an engineer knowledgeable in roof wind design analysis, protocols and procedures for MBMA RSDM, ASCE/SEI 7-05, UL 580, and FM 4471. Engineer must provide certified engineering calculations for the project conforming to the stated references. [1.4.1.1 Manufacturer's Technical Representative NOTE: Include this paragraph where manufacturer inspection is required. The manufacturer's technical representative must be thoroughly familiar with the products to be installed, installation requirements and practices, and with any special considerations in the geographical area of the project. The representative must perform field inspections and attend meetings as specified. ]1.4.1.2 Single Source Roofing panels, clips, closures, and other accessories must be standard products of the same manufacturer, and the most recent design of the manufacturer to operate as a complete system for the intended use. 1.4.2 _{Qualification of Applicator} NOTE: Specify 3 years as an approved contractor unless directed otherwise by the Government Metal roof system applicator must be approved, authorized, or licensed in writing by the roof panel manufacturer and have a minimum of [three][_____] years experience as an approved, authorized, or licensed applicator with that manufacturer, approved at a level capable of providing the specified warranty. Supply the names, locations and client contact information of 5 projects of similar size and scope constructed by applicator using the manufacturer's roofing products submitted for this project within the previous three years. 1.4.3 Field Verification Prior to the preparation of drawings and fabrication, verify location of roof framing, roof openings and penetrations, and any other special conditions. Indicate all special conditions and measurements on final shop drawings. 1.4.4 Qualifications for Welding Work Welding procedures must conform to AWS D1.1/D1.1Mfor steel or AWS D1.2/D1.2M for aluminum. Operators are permitted to make only those types of weldments for which each is specifically qualified. 1.4.5 Pre-roofing Conference After approval of submittals and before performing roofing system installation work, hold a pre-roofing conference to review the following: a. Drawings, specifications, and submittals related to the roof work. Submit, as a minimum; sample profiles of _{roofing panels}, with _{factory-applied color finish} samples, _{flashing and accessories} , _{gutter/downspout assembly} samples, typical _fasteners and _{pressure sensitive tape}, sample _{gaskets and sealant/insulating compounds}. Also include data and 1/2 pint sample of [_{aluminized steel repair paint}][_{enamel repair paint}][_{galvanizing repair paint}], and technical data on _{coil stock} and _{coil stock compatibility}, and manufacturer's _{installation manual}. b. Roof system components installation; c. Procedure for the roof manufacturer's technical representative's onsite inspection and acceptance of the roofing substrate, the name of the manufacturer's technical representatives, the frequency of the onsite visits, distribution of copies of the inspection reports from the manufacturer's technical representative; d. Contractor's plan for coordination of the work of the various trades involved in providing the roofing system and other components secured to the roofing; and e. Quality control plan for the roof system installation; f. Safety requirements. Coordinate pre-roofing conference scheduling with the Contracting Officer. Attendance is mandatory for the Contractor, the Contracting Officer's designated personnel, personnel directly responsible for the installation of metal roof system, flashing and sheet metal work, [[mechanical] [and] [electrical] work], other trades interfacing with the roof work, and representative of the metal roofing manufacturer. Before beginning roofing work, provide a copy of meeting notes and action items to all attending parties. Note action items requiring resolution prior to start of roof work. 1.5 DELIVERY, HANDLING, AND STORAGE Deliver, store, and handle panel materials, bulk roofing products, accessories, and other manufactured items in a manner to prevent damage and deformation, as recommended by the manufacturer, and as specified. 1.5.1 Delivery Package and deliver materials to the site in undamaged condition. Provide adequate packaging to protect materials during shipment. Do not uncrate materials until ready for use, except for inspection. Immediately upon arrival of materials at jobsite, inspect materials for damage, deformation, dampness, and staining. Remove affected materials from the site and immediately replace. Remove moisture from wet materials not otherwise affected, restack and protect from further moisture exposure. 1.5.2 Handling Handle materials in a manner to avoid damage. Select and operate material handling equipment so as not to damage materials or applied roofing. 1.5.3 Storage Stack materials stored on site on platforms or pallets, and cover with tarpaulins or other weathertight covering which prevents trapping of water or condensation under the covering. Store roof panels so that water which may have accumulated during transit or storage will drain off. Do not store panels in contact with materials that might cause staining. Secure coverings and stored items to protect from wind displacement. 1.6 PROJECT CONDITIONS Weather Limitations: Proceed with installation only when existing and forecast weather conditions permit metal roof panel work to be performed according to manufacturer's written instructions and warranty requirements, and specified safety requirements. 1.7 FABRICATION Fabricate and finish metal roof panels and accessories on a [factory stationary industrial type][leased or installer owned portable] rolling mill to the greatest extent possible, per manufacturer's standard procedures and processes, and as necessary to fulfill indicated performance requirements. Comply with indicated profiles, dimensional and structural requirements. Provide panel profile, as indicated on drawings [including major ribs ][and intermediate stiffening ribs ]for full length of panel. Fabricate panel side laps with factory installed [captive gaskets][separator strips] providing a weather tight seal and preventing metal-to metal contact, and minimizing noise from movements within the panel assembly. 1.7.1 Finishes Finish quality and application processes must conform to the related standards specified within this section. Noticeable variations within the same piece are not acceptable. Variations in appearance of adjoining components are acceptable if they are within the range of approved samples and are assembled or installed to minimize any contrasting variations. 1.7.2 Accessories Fabricate flashing and trim to comply with recommendations in SMACNA 1793 as applicable to the design, dimensions, metal, and other characteristics of the item indicated. a. Form exposed sheet metal accessories which are free from excessive oil canning, buckling, and tool marks, and are true to line and levels indicated, with exposed edges folded back to form hems. b. End Seams: Fabricate nonmoving seams with flat-lock seams. Form seams and seal with epoxy seam sealer.[ Rivet joints for additional strength.] c. Sealed Joints: Form non-expansion, but movable joints in metal to accommodate elastomeric sealant to comply with SMACNA 1793. d. Conceal fasteners and expansion provisions where possible.[ Exposed fasteners are not allowed on faces of accessories exposed to view.] e. Fabricate cleats and attachments devices of size and metal thickness recommended by SMACNA or by metal roof panel manufacturer for application, but not less than the thickness of the metal being secured. 1.8 _WARRANTIES Provide metal roof system material and workmanship warranties meeting specified requirements. Provide revision or amendment to manufacturer's standard warranty as required to comply with the specified requirements. 1.8.1 Metal Roof Panel Manufacturer Warranty Note: Select the appropriate warranty duration. Five and ten year warranties may be specified for facilities of small area and of minor importance. For occupied, sensitive, or large facilities, including warehousing, specify a minimum 20-year warranty unless directed otherwise by the Government. Furnish the metal roof panel manufacturer's [5][10][_____][20][30]-year no dollar limit roof system materials and installation workmanship warranty, including flashing, [insulation, ]components, trim, and accessories necessary for a watertight roof system construction. Make warranty directly to the Government, commencing at time of Government's acceptance of the roof work. The warranty must state that: a. If within the warranty period, the metal roof system, as installed for its intended use in the normal climatic and environmental conditions of the facility, becomes non-watertight, shows evidence of moisture intrusion within the assembly, displaces, corrodes, perforates, separates at the seams, or shows evidence of excessive weathering due to defective materials or installation workmanship, the repair or replacement of the defective and damaged materials of the metal roof system and correction of defective workmanship is the responsibility of the metal roof panel manufacturer. All costs associated with the repair or replacement work are the responsibility of the metal roof panel manufacturer. b. If the manufacturer or his approved applicator fail to perform the repairs within [24][48][72] hours of notification, emergency temporary repairs performed by others does not void the warranty. [1.8.2 Manufacturer's Finish Warranty NOTE: Include the following paragraph when factory color finish panels are specified. Provide a manufacturer's no-dollar-limit 20 year warranty for the roofing system. Issue the warranty directly to the Government at the date of Government acceptance.warranting that the factory color finish, under normal atmospheric conditions at the site, will not crack, peel, or delaminate; chalk in excess of a numerical rating of 8 when measured in accordance with ASTM D 4214; or fade or change colors in excess of 5 NBS units as measured in accordance with ASTM D 2244. ]1.8.3 Metal Roof System Installer Warranty NOTE: For Army projects use the first bracketed paragraph and delete the remainder of the installer warranty requirements. For all other projects, delete the first bracketed paragraph. Use the second paragraph. [Provide the "Contractors [Five][Ten][Twenty] [5][10][20]) Year No Penal Sum Warranty for Non-Structural Metal Roof System" attached at the end of this section. [Provide a separate bond in an amount equal to the installed total material and installation roofing system cost in favor of the Government covering the installer's warranty responsibilities effective throughout the [five][ten][twenty] [5][10][20]) year warranty period.]] [Provide roof system installer warranty for a period of not less than [two][five] years that the roof system, as installed, is free from defects in installation workmanship, to include the roof panel installation, flashing, [insulation,] accessories, attachments, and sheet metal installation integral to a complete watertight roof system assembly. Issue warranty directly to the Government. Correction of defective workmanship and replacement of damaged or affected materials is the responsibility of the metal roof system installer. All costs associated with the repair or replacement work are the responsibility of the installer.] 1.8.4 Continuance of Warranty Repair or replacement work that becomes necessary within the warranty period must be approved, as required, and accomplished in a manner so as to restore the integrity of the roof system assembly and validity of the metal roof system manufacturer warranty for the remainder of the manufacturer warranty period. 1.9 CONFORMANCE AND COMPATIBILITY The entire metal roofing and flashing system must be in accordance with specified and indicated requirements, including wind resistance [and seismic per AISC 341 ]requirements. Work not specifically addressed and any deviation from specified requirements must be in general accordance with recommendations of the MBMA RSDM, NRCA 0405, the metal panel manufacturer's published recommendations and details, and compatible with surrounding components and construction. Submit any deviation from specified or indicated requirements to the Contracting Officer for approval prior to installation. 1.10 SCHEDULE Some metric measurements in this section are based on mathematical conversion of English unit measurements, and not on metric measurement commonly agreed to by the manufacturers or other parties. The English and metric units for the measurements shown are as follows:       PRODUCTS               ENGLISH UNITS               METRIC UNITS   a.  Sheet Aluminum         0.040 inch                    1.0 mm   b.  Panels                 12 inches                     300 mm        - vertical legs        2 inches                     50 mm        - stiffening ribs      4 inches                     100 mm   c.  Screws                 No. 14                        0.242 mm                              No. 12                        0.216 mm   d.  Bolts                  1/4 inch                      6 mm   e.  Studs                  3/16 inch                     5 mm   f.  Fasteners              1/2 inch                      13 mm                              One inch                      25 mm   g.  Rivets                 1/16 inch                     5 mm                              1/8 inch                      3 mm PART 2 PRODUCTS 2.1 _{ROOF PANELS} NOTE: Delete this paragraph when aluminum panels are not used in the project. 2.1.1 Aluminum Sheet Panels Roll-form aluminum roof panels to the specified profile, with fy =[ 30][ 40][ 50][ 80] ksi,[ .032][ .040][ .050] thickness and depth as indicated. Material must be plumb and true, and within the tolerances listed: a. Aluminum sheet conforming to ASTM B 209MASTM B 209, and AA ADM1 b. Individual panels to have continuous length sufficient to cover the entire length of any unbroken roof slope with no joints or seams and formed without warping, waviness, or ripples that are not a part of the panel profile and free from damage to the finish coating system. c. Provide panels with thermal expansion and contraction consistent with the type of system specified, and the following profile: [i. profile and coverage to be a minimum height and width from the manufacturer's standard for the indicated roof slope.] [ii. profile to be a 3.81 cm1-1/2 inch high rib at 30.48 cm12 inches o.c. with small stiffening ribs, 96.5 cm38 inch overall panel width with 91.4 cm36 inch exposed panel and exposed fasteners.] [iii. profile to be a 3.81 cm1-1/2 inch high rib at 18.3 cm7.2 inches o.c.; 96.5 cm38-7/8 inch overall width with 91.4 cm36 inch exposed panel and exposed fasteners.] [iv. profile to be a 2.54 cm1 inch high rib at 10.2 cm4 inches o.c.; 126 cm49-5/8 inch overall width with [122][112] cm[48][44] inch exposed panel and exposed fasteners.] [v. profile to be a 2.54 cm1 inch high rib at 20.4 cm8 inches o.c.; 106 cm41-5/8 inch overall width with 102 cm40 inch exposed panel and exposed fasteners.] [vi. profile to be a 4.45 cm1-3/4 inch high V-beam rib at 12.7 cm5 inches o.c.; 114 cm44-7/8 inch overall width with 107 cm42 inch exposed panel and exposed fasteners.] [vii. profile to be a 2.22 cm7/8 inch high corrugated rib at 5.08 cm2 inches o.c., 98.75 cm38-7/8 inch overall width with 91.44 cm36 inch exposed panel and exposed fasteners.] [viii. profile to be a 7.62 cm3 inch high standing seam, 60.96 cm24 inch coverage, factory-caulked and mechanical crimping or snap-together seams with concealed clips and fasteners.] [ix. profile to be a[ 2.54][ 4.45][ 5.08][ 6.35] cm[ 1][ 1-3/4][ 2][ 2-1/2] inch high standing seam,[ 30.48][ 40.64][ 45.72][ 60.96] cm[ 12][ 16][ 18][ 24] inch coverage with mechanical crimping or snap-together seams with concealed clips and fasteners.] [x. profile to be [smooth, flat][embossed pattern][textured]surface.] [xi. profile to be custom, as shown on drawings.] 2.1.2 Steel Sheet Panels NOTE: Delete this paragraph when steel panels are not used in the project. AZ 50 coating is allowed for factory-color-finished and not for mill finish. Consider aluminum-coated steel materials for Army projects only. Roll-form steel sheet roof panels to the specified profile, with fy =[ 30][ 40][ 50][ 80] ksi,[26][24][22][20][18] gauge and depth as indicated. Material must be plumb and true, and within the tolerances listed: [a. Galvanized steel sheet conforming to ASTM A 653/A 653M and AISI SG03-3.] [b. Aluminum-Zinc alloy coated steel sheet conforming to ASTM A 792/A 792M and AISI SG03-3.] c. Individual panels to have continuous length sufficient to cover the entire length of any unbroken roof slope with no joints or seams and formed without warping, waviness, or ripples that are not a part of the panel profile and free from damage to the finish coating system. d. Provide panels with thermal expansion and contraction consistent with the type of system specified, and the following profile: [i. profile and coverage to be a minimum height and width from the manufacturer's standard for the indicated roof slope.] [ii. profile to be a 3.81 cm1-1/2 inch high rib at 30.48 cm12 inches o.c. with small stiffening ribs, 96.5 cm38 inch overall panel width with 91.4 cm36 inch exposed panel and exposed fasteners.] [iii. profile to be a 3.81 cm1-1/2 inch high rib at 18.3 cm7.2 inches o.c.; 96.5 cm38-7/8 inch overall width with 91.4 cm36 inch exposed panel and exposed fasteners.] [iv. profile to be a 2.54 cm1 inch high rib at 10.2 cm4 inches o.c.; 126 cm49-5/8 inch overall width with [122][112] cm[48][44] inch exposed panel and exposed fasteners.] [v. profile to be a 2.54 cm1 inch high rib at 20.4 cm8 inches o.c.; 106 cm41-5/8 inch overall width with 102 cm40 inch exposed panel and exposed fasteners.] [vi. profile to be a 4.45 cm1-3/4 inch high V-beam rib at 12.7 cm5 inches o.c.; 114 cm44-7/8 inch overall width with 107 cm42 inch exposed panel and exposed fasteners.] [vii. profile to be a 2.22 cm7/8 inch high corrugated rib at 5.08 cm2 inches o.c., 98.75 cm38-7/8 inch overall width with 91.44 cm36 inch exposed panel and exposed fasteners.] [viii. profile to be a[ 2.54][ 4.45][ 5.08][ 6.35] cm[ 1][ 1-3/4][ 2][ 2-1/2] inch high standing seam,[ 30.48][ 40.64][ 45.72][ 60.96] cm[ 12][ 16][ 18][ 24] inch coverage with mechanical crimping or snap-together seams with concealed clips and fasteners.] [ix. profile to be [smooth, flat][embossed pattern][textured]surface.] [x. profile to be custom, as shown on drawings.] 2.2 _{FACTORY FINISH AND COLOR PERFORMANCE REQUIREMENTS} NOTE: Specify factory color finish except when the buildings are to be used for temporary purposes or where mill finish aluminum or galvalume panels provide an acceptable appearance. If factory color finish is not required, document the rationale for the decision in the design analysis and delete this paragraphs and related subparagraphs. The US metal building industry offers a variety of color finishes to protect the metal panels against chemical corrosion and ultraviolet radiation; to provide long life with minimum maintenance plus acceptable weathering and color retention; and to assure chalk, fade, and mar resistance. Some of the most widely used coatings include, but are not limited to, the following: a. Polyvinylidene fluoride (PVDF2); a nominal 0.025 mm (1 mil) thick coating modified with a proprietary resin for toughness; it may be used in most environments. b. Silicone-modified polyester (SMP); a thermoset coating system composed of polyester resin modified by copolymerization with a functional silicone resin intermediate designed for added protection against chemical corrosion and ultraviolet radiation. c. Plastisol (PVC); a two-coat system consisting of a polyvinyl-chloride resin dispersed in a plasticizer top-coat over a corrosion-resistant primer; it is a high-performance, thick coating designed for highly aggressive and corrosive environments with excellent resistance to common acids, alkalis, and inorganic compounds. Most coatings may be ordered extra-thick for buildings in direct contact with salt or chemical laden air or where a premium finish would be justified. The thicker coating provides additional primer and increases the coating's corrosion and abrasion resistance, but it requires a special run by the coil coater and additional delivery time. Appropriate specification requirements must be added if thick film coatings are to be used. Clear coats may also be added to the finish color coated coil to enhance the coatings performance. The baseline values included in this specification are for a standard 0.025 mm (1 mil) PVDF2 (i.e., Kynar 500, Hylar 5000) coating system. If a different coating type or thickness is required, research the coating type and modify indicated values accordingly. Coordinate with the coating type specified elsewhere in this section. Corrosion of galvanized steel panels, together with the fact that cut edges, scratches and penetrations of the panels expose the steel substrate, warrants consideration for the use of aluminum panels in salt spray and other corrosive environments; however, the greater expansion of aluminum must be considered in the design. Where steel panels are used in coastal environments, specify enhanced PVDF2 or other premium coatings. Increased PVDF2 coating thicknesses and or addition of a factory-applied clear coat over the color finish enhances coating system performance. Roof panels are available in several standard colors. Specify custom color options only with Government approval. Where accent colors are required, specify accordingly. Energy considerations may be a consideration in the color choice for the roof panels. White or light-colored roofing surfaces are much better at reflecting sunlight (radiant gain and UV) than darker surfaces. Coordinate color specification and selection with the user. All panels are to receive a factory applied [polyvinylidene fluoride][Kynar 500/Hylar 5000] [_____] finish consisting of a baked topcoat with a manufacturer's recommended prime coat conforming to the following: a. Metal Preparation: All metal is to have the surfaces carefully prepared for painting on a continuous process coil coating line by alkali cleaning, hot water rinsing, application of chemical conversion coating, cold water rinsing, sealing with an acid rinse, and thorough drying. b. Prime Coating: A base coat of epoxy paint, specifically formulated to interact with the top-coat, is to be applied to the prepared surfaces by roll coating to a dry film thickness of 0.20 + 0.05 mils. The prime coat must be oven cured prior to application of the finish coat. c. Exterior Finish Coating: Apply the exterior finish coating over the primer by roll coating to a dry film thickness of 0.80 + 0.05 mils (3.80 + 0.05 mils for Vinyl Plastisol) for a total dry film thickness of 1.00 +0.10 mils (4.00 + 0.10 mils for Vinyl Plastisol). This exterior finish coat must be oven-cured. d. Interior finish coating: Apply a wash coat on the reverse side over primer by roll coating to a dry film thickness of 0.30 + 0.05 mils for a total dry fill thickness of 0.50 +0.10 mils. The wash coat must be oven cured. e. Color: The exterior finish chosen from the manufacturer's standard color chart. f. Physical Properties: Coating must conform to the industry and manufacturer's standard performance criteria as listed by the following certified test reports: General: SSPC Paint 12, NAVFAC A-A-50570, ASTM D 5894, and ASTM D 4587. Abrasion: ASTM D 968 Adhesion: ASTM D 3359 Chalking: ASTM D 4214 Chemical Pollution: ASTM D 1308 Color Change and Conformity: ASTM D 2244 Creepage: ASTM D 1654 Cyclic Corrosion Test: ASTM D 5894 Flame Spread: ASTM E 84 Flexibility: ASTM D 522 Formability: ASTM D 522 Gloss at 60 and 85 degrees: ASTM D 523 Humidity: ASTM D 2247 and ASTM D 714 Oxidation: ASTM D 610 Pencil Hardness: ASTM D 3363 Reverse Impact: ASTM D 2794 Salt Spray: ASTM B 117 Weatherometer: ASTM G 23 and ASTM D 822 2.2.1 Specular Gloss NOTE: Specify the first bracketed option for most roof conditions. For roofs of structures along airfields where glare would be objectionable and may be an operational hazard, the specular gloss value should be limited to 10 or less at an angle of 85 degrees. Limited paint systems can meet this reflectance value. Panel embossing also reduces the gloss, or reflectance value, and may be specified in combination with the paint system specification to meet the necessary requirement Finished roof surfaces to have a specular gloss value of [30 plus or minus 5 at an angle of 60 degrees] [10 or less at an angle of 85 degrees] when measured in accordance with ASTM D 523. 2.3 MISCELLANEOUS METAL FRAMING 2.3.1 General Provide cold formed metallic-coated steel sheet conforming to ASTM A 653/A 653M, AISI/COS/NASPEC, and as specified in 05 40 00 COLD-FORMED METAL FRAMING unless otherwise indicated. 2.3.2 Fasteners and Miscellaneous Metal Framing Provide compatible type, corrosion resistant, of sufficient size and length to penetrate the supporting element a minimum of one inch with other required properties to fasten miscellaneous metal framing members to substrates in accordance with the roof panel manufacturer's and ASCE/SEI 7-05 requirements. 2.3.2.1 Exposed Fasteners Fasteners for roof panels must be corrosion resistant [coated steel][aluminum][stainless steel][nylon capped steel], compatible with the sheet panel or flashing material and of the type and size recommended by the manufacturer to meet the performance requirements and design loads. Fasteners for accessories must be the manufacturer's standard. Provide an integral metal washer, matching the color of attached material with compressible sealing epdm gasket approximately 3/32 inch thick for exposed fasteners. 2.3.2.2 Screws Provide corrosion resistant screws, [coated steel][aluminum][stainless steel] of the type and size recommended by the manufacturer to meet the performance requirements. 2.3.2.3 Rivets Provide closed-end type rivets, corrosion resistant [coated steel][aluminum][stainless steel] where watertight connections are required. 2.3.2.4 Attachment Clips Provide [hot-dip galvanized, conforming to ASTM A 653/A 653M, ][stainless steel, series 300] clips. Size, shape, thickness and capacity must meet the thickness and design load criteria specified. 2.3.3 Electrodes for Manual, Shielded Metal Arc Welding Electrodes for manual, shielded metal arc welding must meet the requirements of AWS D1.1/D1.1M, and be covered, mild-steel electrodes conforming to AWS A5.1/A5.1M. 2.4 _ACCESSORIES Accessories must be compatible with the metal roof panels. Sheet metal flashing, trim, metal closure strips, caps, and similar metal accessories must be not less than the minimum thicknesses specified for roof panels. Provide exposed metal accessories to match the panels furnished[, except as otherwise indicated]. Molded foam rib, ridge and other closure strips must be closed-cell or solid-cell synthetic rubber or neoprene premolded to match configuration of the panels and not absorb or retain water. 2.4.1 Pre-manufactured Accessories NOTE: Include the following general paragraph. Add subparagraphs for specific accessory materials requirements as required for the specific project and components to be installed. Accessory components might include ridge vents, curbs, hatches, roof jacks, prefabricated flashing boots, walkways, snow guards, etc. Pre-manufactured accessories must be manufacturer's standard for intended purpose,[ comply with applicable specification section,] compatible with the metal roof system and approved for use by the metal roof panel manufacturer. Construct curbs to match roof slope. 2.4.2 Metal Closure Strips Provide factory fabricated [aluminum closure strips][steel closure strips] of the same [gauge][thickness], color, finish and profile as the specified roof panel. 2.4.3 Rubber Closure Strips Provide closed-cell, expanded cellular rubber closure strips conforming to ASTM D 1056 and ASTM D 1667, extruded or molded to the configuration of the specified roof panel profile and in lengths supplied by roof panel manufacturer. [2.4.4 Subgirts for Retrofits Provide bar subgirts 38 by 3 millimeter 1-1/2- by 1/8 inch galvanized steel with slotted holes for welding to end of impaling clip spikes. ]2.5 JOINT SEALANTS 2.5.1 Sealants Sealants are to be an approved gun type for use in hand or air pressure caulking guns at temperatures above 4 degrees C40 degrees F ( or frost-free application at temperatures above minus 12 degrees C10 degrees F) with a minimum solid content of 85 percent of the total volume. Sealant must dry with a tough, durable surface skin which permits it to remain soft and pliable underneath, providing a weather tight joint. No migratory staining, in conformance with to ASTM C 792, is permitted on painted or unpainted metal, stone, glass, vinyl or wood. Prime all joints to receive sealants with a compatible one-component or two-component primer as recommended by the roof panel manufacturer. 2.5.1.1 Shop Applied Sealants Sealant for shop-applied caulking must be an approved gun grade, non-sag one-component polysulfide or silicone conforming to ASTM C 792 and ASTM C 920, Type II, with a curing time which ensures the sealants plasticity at the time of field erection. Color to match panel color. 2.5.1.2 Field Applied Sealants Sealants for field-applied caulking must be an approved gun grade, non-sag on-component polysulfide or two component polyurethane with an initial maximum Shore A durometer hardness of 25, conforming to ASTM C 920, Type II. Color to match panel color. 2.5.1.3 Tape Sealants Provide pressure sensitive, 100 percent solid tape sealant with a release paper backing; permanently elastic, non-sagging, non-toxic and non-staining as approved by the roof panel manufacturer. 2.5.2 Sheet Metal Flashing and Trim 2.5.2.1 Fabrication, General Custom fabricate sheet metal flashing and trim to comply with recommendations within the SMACNA 1793 that apply to design, dimensions, metal type, and other characteristics of design indicated. Shop fabricate items to the greatest extent possible. Obtain and verify field measurements for accurate fit prior to shop fabrication. Fabricate flashing and trim without excessive oil canning, buckling, and tool marks, true to line and levels indicated, with exposed edges folded back to form hems. 2.5.2.2 Roof Drainage Sheet Metal Fabrications Gutters: Fabricate to cross section indicated, with riveted and soldered joints, complete with end pieces, outlet tubes, and other special accessories as required. Fabricate in minimum 244 cm 96 inch long sections. Fabricate expansion joints and accessories from the same metal as gutters, unless otherwise indicated. Downspouts: Fabricate[ circular][ rectangular][ square] downspouts complete with mitered elbows. Furnish with metal hangars of same material as downspouts and anchors. 2.6 INSULATION NOTE: Include this paragraph only when the non-structural roof system assembly incorporates insulation above the roof deck or directly in contact with the roof panels. Coordinate with the appropriate insulation specification section. Vapor retarder design must also be coordinated with the insulation requirements and specified in the insulation section. Insulation, facer material and attachment must be compatible with metal roof system specified, as approved by the roof panel manufacturer, and conform to ASTM C 552 (cellular glass) or ASTM C 553 (fiber blankets). NOTE: Delete the following two paragraphs for non-rated roof panel systems. [2.6.1 Fire Rated Assembly System Provide semi-rigid glass-fiber insulation board conforming to ASTM C 553, Form A, Class 1, Class A fire-hazard classification with a minimum density of 24.8 kilogram per cubic meter, and 38 millimeter 1.55 pounds per cubic foot (pcf), and 1-1/2 inches thick. Thermal conductivity (K) must not exceed 0.42 watt per meter per degree K. 0.24. ]2.6.2 Fire Rated Roof Panel Assembly Provide materials for fire-rated roof panel construction as follows: Impaling clips, accessories, and fasteners must be UL listed 40 U18.24 UL Bld Mat Dir galvanized steel sheet or impaling bolts welded to each wall unit joint and spaced not more than 1200 millimeter 48 inches on center. Provide bar subgirts 38 by 3 millimeter 1-1/2- by 1/8 inch galvanized steel with slotted holes for welding to end of impaling clip spikes. Provide galvanized steel structural angles and flashing angles, gage or thickness as indicated, or material as specified. Flashing angles must be not less than 1.3 millimeter thick No. 18 U.S. standard gage. [Provide hot-dip galvanized steel metal facing conforming to ASTM A 653/A 653M, Grade A. Coating must conform to, ASTM A 653/A 653M and ASTM A 924/A 924M.] [Metal facing must be as indicated and fabricated of enamel-coated hot-dip galvanized steel conforming to ASTM A 653/A 653M , Grade A. Coating must conform to ASTM A 653/A 653M and ASTM A 924/A 924M. Provide Class A fire hazard classification finish. Flame spread, fuel contributed, or smoke developed cannot exceed a value of 25.] Submit _{fire rating test report} to contracting officer for review and approval. Secure written approval prior to commencement of installation. 2.7 _{UNDERLAYMENTS} NOTE: Underlayments included in this UFGS are for slopes of 3:12 or greater. For slopes less than 3:12 other underlayment materials should be used. Refer to MBMA RSDM and NRCA RWM for guidance. Select proper underlayment or combination of underlayment materials. Delete other options. Consider self-adhering modified bitumen underlayment for ice dam protection and ridge, hip, valley, and sidewall areas. Additionally, severe weather locations, complex roofs, or high value contents must consider the higher protection capacity of a self-adhering modified bitumen underlayment, where it will not create a condensation concern. When low perm underlayment is used throughout the roof area, ensure its vapor retarding effects are considered such that its use does not create condensation issues. Consideration for predominant vapor drive action in hot and cold climates in combination with building use and location, insulation location, under deck or attic space venting, and vapor retarder needs and positioning should be considered in underlayment selection. Underlayment in conjunction with an underlying and properly positioned vapor retarder/barrier may be required in some circumstances. For shed roofs, underlayment may be omitted. [2.7.1 Felt Underlayment Provide No. 30 asphalt-saturated organic , non-perforated felt underlayment in compliance with ASTM D 226, Type II, or ASTM D 4869. ][2.7.2 _{Self-Adhering Modified Bitumen Underlayment} Provide self-adhering modified bitumen membrane underlayment material in compliance with ASTM D 1970, suitable for use as underlayment for metal roofing. Use membrane resistant to cyclical elevated temperatures for extended period of time in high heat service conditions. Provide membrane with integral non-tacking top surface of polyethylene film or other surface material to serve as separator between bituminous material and metal products to be applied above. ][2.7.3 EPDM Membrane Ethylene Propylene Diene Terpolymer (EPDM), ASTM D 4637, Type I, non-reinforced, minimum 1.1 mm (0.045 inch) thick. ][2.7.4 Slip Sheet Provide 0.24 kg per square meter (5 pounds per 100 sf) rosin sized unsaturated building paper for slip sheet. ]2.8 _{GASKETS AND SEALING/INSULATING COMPOUNDS} Gaskets and sealing/insulating compounds must be nonabsorptive and suitable for insulating contact points of incompatible materials. Sealing/insulating compounds must be non-running after drying. 2.9 FINISH REPAIR MATERIAL [Repair paint for color finish enameled roofing must be compatible paint of the same formula and color as the specified finish furnished by the manufacturer.] [Only use repair and touch-up paint supplied by the roof panel manufacturer and is compatible with the specified system.] PART 3 EXECUTION 3.1 EXAMINATION Examine substrates, areas, and conditions, with installer present, for compliance with requirements for installation tolerances, metal roof panel supports, and other conditions affecting performance of the work.. Ensure surfaces are suitable, dry and free of defects and projections which might affect the installation. Examine primary and secondary roof framing to verify that rafters, purlins, angels, channels, and other structural support members for panels and anchorages have been installed within alignment tolerances required by metal roof panel manufacturer, UL, ASTM, and ASCE/SEI-7-05[ and applicable seismic] requirements. 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. Examine rough-in for components and systems penetrating metal roof panels to verify actual locations of penetrations relative to seam locations of panels prior to installation. Submit a written report to the Contracting Officer, endorsed by the installer, listing conditions detrimental to the performance of the work. Proceed with installation only after defects have been corrected. 3.2 INSTALLATION Installation must meet specified requirements and be in accordance with the manufacturer's installation instructions and approved shop drawings. Do not install damaged materials. Dissimilar materials which are not compatible when contacting each other must be insulated by means of gaskets or sealing/insulating compounds. Keep all exposed surfaces and edges clean and free from sealant, metal cuttings, hazardous burrs, and other foreign material. Remove stained, discolored, or damaged materials from the site. 3.2.1 Preparation NOTE: For roof panel installations which do not require insulation, delete the bracket containing insulation. Clean all substrate substances which may be harmful to [insulation,and ]roof panels including removing projections capable of interfering with with [insulation, and ]roof panel attachment. Install sub-purlins, eave angles, furring, and other miscellaneous roof panel support members and anchorage according to metal roof panel manufacturer's written instructions. 3.2.2 Underlayment NOTE: Coordinate underlayment application with materials specification in Part 2. Show the extent and location of the appropriate underlayment on the drawings. The underlayment must ensure that any water penetrating below the roof panels will drain outside of the building envelope. Include the bracketed option related to ice dam protection where ice damming is a concern. Include the bracketed option in the last sentence when felt underlayment is used. Install underlayment according to roof panel manufacturer's written recommendations and recommendation in NRCA "The NRCA Roofing and Waterproofing Manual". [3.2.2.1 Single Layer Felt Underlayment for a Standard Slope Roof Deck Install single layer of felt underlayment on roof deck perpendicular to roof slope in parallel courses. Lap sides a minimum of 5.1 cm2 inches over underlying course. Lap ends a minimum of 10.2 cm4 inches. Stagger end laps between succeeding courses a minimum of 183 cm72 inches. Fasten with felt underlayment roofing nails. [Install felt underlayment on roof deck not covered by self-adhering sheet underlayment. Lap sides of felt over self-adhering sheet underlayment not less than 7.62 cm3 inches in a direction to shed water. Lap ends of felt not less than 15.3 cm6 inches over self-adhering sheet underlayment.] ][3.2.2.2 Self-Adhering Sheet Underlayment Install self-adhering sheet underlayment; wrinkle free on roof deck. Comply with low-temperature installation restrictions of manufacturer where applicable. Install at locations indicated on project drawings, lapped in a direction to shed water. Lap sides not less than 8.9 cm3-1/2 inches. Lap ends not less than 15.3 cm6 inches staggered 61 cm24 inches between courses. Roll laps with roller. Cover underlayment within seven days. ][3.2.2.3 Slip Sheet NOTE: Include first bracketed option when underlayment is used. Include second bracketed option when underlayment is omitted over deck substrate (e.g., shed roof over plywood decking). [Apply specified slip sheet at time of roof panel installation when felt or other underlayment is used that may be in direct contact with and adhere to or adversely impact the underside of roof panels, and as otherwise recommended by the roof panel manufacturer.][Install slip sheet over deck substrates prior to roof panel installation.] ]3.3 INSULATION INSTALLATION NOTE: Delete the following paragraph if the project does not require insulation above the roof deck. Install insulation concurrently with metal roof panel installation, in thickness indicated, to cover entire roof, according to manufacturer's written instructions. 3.4 PROTECTION OF APPLIED MATERIALS Do not permit storing, walking, wheeling, and trucking directly on applied roofing/insulation materials. Provide temporary walkways, runways, and platforms of smooth clean boards or planks as necessary to avoid damage to applied roofing/insulation materials, and to distribute weight to conform to indicated live load limits of roof construction. 3.5 FASTENER INSTALLATION Anchor metal roof panels and other components of the Work securely in place, using approved fasteners according to manufacturer's written instructions. 3.5.1 Welding Procedures for manual, shielded metal-arc welding, the appearance and quality of welds made, and the methods used in correcting welding work must be in accordance with AWS D1.1/D1.1M. 3.6 FLASHING, TRIM, AND CLOSURE INSTALLATION 3.6.1 General Requirements Comply with performance requirements, manufacturer's written installation instructions, and SMACNA 1793. Provide concealed fasteners where possible. Set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently water tight and weather resistant. Work is to be accomplished to form weather tight construction without waves, warps, buckles, fastening stresses or distortion, and to allow for expansion and contraction. Cutting, fitting, drilling, and other operations in connection with sheet metal required to accomplish the work must conform to the manufacturers written instructions. 3.6.2 Metal Flashing Install exposed metal flashing at building corners, rakes, eaves, junctions between metal siding and roofing, valleys and changes off slope or direction in metal roofing, building expansion joints and gutters. Exposed metal flashing must be the same material, color, and finish as the specified metal roofing panels. Furnish flashing in minimum 2.44 m8 foot lengths. Exposed flashing must have 1 inch locked and blind soldered end joints, with expansion joints at intervals of no greater than 4.88 m16 feet. Fasten flashing at not more than 8 inches on center for roofs, except where flashing is held in place by the same screws used to secure panels. Exposed flashing and flashing subject to rain penetration must be bedded in specified joint sealant. Flashing which is contact with dissimilar metals must be isolated by means of the specified asphalt mastic material to prevent electrolytic deterioration. Form drips to the profile indicated, with the edge folded back 1.27 cm1/2 inch to form a reinforced drip edge. 3.7 ROOF PANEL INSTALLATION Provide metal roof panels of full length from eave to ridge or eave to wall as indicated, unless otherwise indicated or restricted by shipping limitations. Anchor metal roof panels or other components of the Work securely in place, with provisions for thermal and structural movement in accordance with NRCA ASMMRM. [ Steel Roof Panels: Use stainless steel fasteners for exterior surfaces and galvanized fasteners for unexposed surfaces.] [ Aluminum Roof Panels: Use aluminum or stainless steel fasteners for surfaces exposed to the exterior and aluminum or galvanized steel fasteners for unexposed surfaces.] Anchor Clips: Anchor metal roof panels and other components of the Work securely in place, using approved fasteners according to manufacturer's written instructions. Provide all blocking and nailers as required. Metal Protection: Where dissimilar metals contact each other or possibly corrosive substrates, protect against galvanic action by [coating contact surfaces with a bituminous coating][applying rubberized asphalt underlayment to each contact surface][permanent separation as recommended by the metal roof panel manufacturer]. Joint Sealers: Install gaskets, joint fillers, and sealants where indicated and required for weatherproof performance of metal roof panel system. Provide types of gaskets, fillers, and sealants indicated or, if not indicated, types recommended by metal roof panel manufacturer. 3.7.1 Handling and Erection Erect roofing system in accordance with the approved erection drawings, printed instructions and safety precautions of the manufacturer. Do not subject panels to overloading, abuse, or undue impact. Do not apply bent, chipped, or defective panels. Damaged panels must be replaced and removed from the site at the contractors expense. Erect panels true, plumb, and in exact alignment with the horizontal and vertical edges of the building, securely anchored, and with indicated rake, eave, and curb overhang. Allow for thermal movement of the roofing, movement of the building structure, and provide permanent freedom from noise due to wind pressure. Do not permit storage, walking, wheeling or trucking directly on applied roofing materials. Provide temporary walkways, runways, and platforms of smooth clean boards or planks as necessary to avoid damage to the installed roofing materials, and to distribute weight to conform to the indicated live load limits of the roof construction. Roof panels must be laid with corrugations in the direction of the roof slope. End laps of exterior roofing must not be less than 20.3 cm8 inches; side laps of standard exterior corrugated panels must not be less than 2-1/2 corrugations. Field cutting of metal roof panels by torch is not permitted. Field cut only as recommended by manufacturer's written instructions. 3.7.2 Closure Strips Install metal closure strips at open ends of metal ridge rolls; open ends of corrugated or ribbed pattern roofs, and at intersection of wall and roof, unless open ends are concealed with formed eave flashing; rake of metal roof unless open end has a formed flashing member; and in other required areas. Install closure strips at intersection of the wall with metal roofing; top and bottom of metal siding; heads of wall openings; and in other required locations. 3.7.3 Workmanship Make lines, arises, and angles sharp and true. Free exposed surfaces from any visible wave, warp, buckle and tool marks. Fold back exposed edges neatly to form a 1.27 cm1/2 inch hem on the concealed side. Make sheet metal exposed to the weather watertight with provisions for expansion and contraction. Make surfaces to receive sheet metal plumb and true, clean, even, smooth, dry, and free of defects and projections which might affect the application. For installation of items not shown in detail or not covered by specifications conform to the applicable requirements of SMACNA 1793. Provide sheet metal flashing in the angles formed where roof decks abut walls, curbs, ventilators, pipes, or other vertical surfaces and wherever indicated and as necessary to make the work watertight. 3.8 ACCEPTANCE PROVISIONS 3.8.1 Erection Tolerances Erect metal roofing straight and true with plumb vertical lines correctly lapped and secured in accordance with the manufacturer's written instructions. Horizontal lines must not vary more than .32 cm in 12.2 m1/8 inch in 40 feet. 3.8.2 Leakage Tests Finished application of metal roofing is to be subject to inspection and test for leakage by the Contracting Officer or his designated representative, and Architect/Engineer. Inspection and tests will be conducted without cost to the Government. Inspection and testing is to be made promptly after erection to permit correction of defects and removal/replacement of defective materials. 3.8.3 Repairs to Finish Scratches, abrasions, and minor surface defects of finish may be repaired with the specified repair materials and as recommended by the metal roof panel manufacturer. Finished repaired surfaces must be uniform and free from variations of color and surface texture. Repaired metal surfaces that are not acceptable to the project requirements are to be immediately removed and replaced with new material. 3.8.4 Paint Finished Metal Roofing Paint finished metal roofing will be tested for color stability by the Contracting Officer during the manufacturer's specified guarantee period. Panels that indicate color changes, fading, or surface degradation, determined by visual examination, must be removed and replaced with new panels at no expense to the Government. New panels will be subject to the specified tests for an additional year from the date of their installation. 3.9 CLEAN UP AND DISPOSAL NOTE: Include optional last sentence for steel panels in salt spray environment (i.e., within 150 m500 feet of waterfront) and other corrosive environments. Clean exposed sheet metal work at completion of installation. Remove metal shavings, filings, nails, bolts, and wires from roofs. Remove grease and oil films, excess sealants, handling marks, contamination from steel wool, fittings and drilling debris and scrub the work clean. Exposed metal surfaces must be free of dents, creases, waves, scratch marks, solder or weld marks, and damage to the finish coating. Touch up scratches in panel finish with manufacturer supplied touch-up paint system to match panel finish. [Treat exposed cut edges with manufacturer supplied [clear][_____] coat.] Collect all scrap/waste materials and place in containers. Promptly dispose of demolished and scrap materials. Do not allow scrap/waste materials to accumulate on-site; transport immediately from the government property and legally dispose of them. 3.10 FIELD QUALITY CONTROL [3.10.1 Manufacturer's Inspection NOTE: Include this paragraph when manufacturer's inspection of work is required. Select desired frequency of manufacturer inspection and coordinate with text of optional 2nd and 3rd bracketed sentences. Manufacturer's technical representative must visit the site a minimum of [[three][_____] times][once per week] during the installation for purposes of reviewing materials installation practices and adequacy of work in place.[ Make inspections during the first 20 squares of roof panel installation, at mid-point of the installation, and at substantial completion, at a minimum. Additional inspections are required for each 100 squares of total roof area with the exception that follow-up inspections of previously noted deficiencies or application errors must be performed as requested by the Contracting Officer.] After each inspection, submit a report, signed by the manufacturer's technical representative to the Contracting Officer within 3 working days. Note in the report overall quality of work, deficiencies and any other concerns, and recommended corrective action. Submit three [_____] signed copies of the _{manufacturer's field inspection reports} to the Contracting Officer within one week of substantial completion. ]3.11 _{INFORMATION CARD} For each roof, furnish a typewritten information card for facility records and a card laminated in plastic and framed for interior display at roof access point, or a photoengraved 1 mm (0.032) inch thick aluminum card for exterior display. Format as directed in paragraph titled "Form One". Make card 215 mm by 275 mm8 1/2 by 11 inches minimum. Information card must identify facility name and number; location; contract number; approximate roof area; detailed roof system description, including deck type, roof panel manufacturer and product name, type underlayment(s), date of completion; installing contractor identification and contact information; manufacturer warranty expiration, warranty reference number, and contact information. Install card at [interior roof top access point][location as directed by the Contracting Officer] and provide a paper copy to the Contracting Officer. 3.11.1 Form One FORM 1 - PREFORMED [STEEL][ALUMINUM] PANEL ROOFING SYSTEM AND COMPONENTS 1. Contract Number: 2. Building Number & Location: 3. NAVFAC Specification Number: 4. Deck/Substrate Type: 5. Slopes of Deck/Roof Structure: 6. Insulation Type & Thickness: 7. Insulation Manufacturer: 8. Vapor Retarder: ( )Yes ( )No 9. Vapor Retarder Type: 10. Preformed Steel Standing Seam Roofing Description: a. Manufacturer (Name, Address, & Phone No.): b. Product Name: c. Width: d. Gage: e. Base Metal: f. Method of Attachment: 11. Repair of Color Coating: a. Coating Manufacturer (Name, Address & Phone No.): b. Product Name: c. Surface Preparation: d. Recoating Formula: e. Application Method: 12. Statement of Compliance or Exception:_________________________________ __________________________________________________________________________ __________________________________________________________________________ 13. Date Roof Completed: 14. Warranty Period: From_______________ To_______________ 15. Roofing Contractor (Name & Address): 16. Prime Contractor (Name & Address): Contractor's Signature _________________________ Date: Inspector's Signature _________________________ Date:Text [3.12 _{DATE OF INSTALLATION WALL-MOUNTED PLACARD} For each metal roof panel installation, furnish an exterior "Date of Installation Placard", 0.032 inch thick [aluminum][_____], 21.6 cm8-1/2 inches high by 28 cm11 inches wide, with mounting accessories, photoengraved to include the following information: Facility Name and Number Approximate Roof Area Newly Installed and Date of Completion Manufacturer, Type of Roof Panel and Name Underlayment and Insulation System, R value Installing Contractor and Contact Information Warranty Expiration Date Warranty Reference Number and Contact Information Install placard as directed by the Contracting Officer. ]3.13 USACE WARRANTY NOTE: Include the attached four page warranty document for Army projects only. Coordinate with the warranty text in Part 1 of this specification. CONTRACTOR'S [FIVE (5)][TEN (10)][TWENTY (20)] YEAR NO PENAL SUM WARRANTY FOR NON-STRUCTURAL METAL ROOF SYSTEM FACILITY DESCRIPTION_________________________________________________ BUILDING NUMBER:_____________________________________________________ CORPS OF ENGINEERS CONTRACT NUMBER:__________________________________ CONTRACTOR CONTRACTOR:__________________________________________________________ ADDRESS:_____________________________________________________________ POINT OF CONTACT:____________________________________________________ TELEPHONE NUMBER:____________________________________________________ OWNER OWNER:_______________________________________________________________ ADDRESS:_____________________________________________________________ POINT OF CONTACT:____________________________________________________ TELEPHONE NUMBER:____________________________________________________ CONSTRUCTION AGENT CONSTRUCTION AGENT:__________________________________________________ ADDRESS:_____________________________________________________________ POINT OF CONTACT:____________________________________________________ TELEPHONE NUMBER:____________________________________________________ CONTRACTOR'S [FIVE (5)][TEN (10)][TWENTY (20)] YEAR NO PENAL SUM WARRANTY FOR NON-STRUCTURAL METAL ROOF SYSTEM (continued) THE NON-STRUCTURAL METAL ROOF SYSTEM INSTALLED ON THE ABOVE NAMED BUILDING IS WARRANTED BY _____________________________  FOR A PERIOD OF FIVE (5) YEARS AGAINST WORKMANSHIP AND MATERIAL DEFICIENCIES, WIND DAMAGE, STRUCTURAL FAILURE, AND  LEAKAGE.  THE NON-STRUCTURAL METAL ROOFING SYSTEM COVERED UNDER THIS WARRANTY SHALL INCLUDE, BUT SHALL NOT BE LIMITED  TO, THE FOLLOWING:  THE ENTIRE ROOFING SYSTEM, MANUFACTURER SUPPLIED FRAMING AND STRUCTURAL MEMBERS, METAL ROOF PANELS,  FASTENERS, CONNECTORS, ROOF SECUREMENT COMPONENTS, AND ASSEMBLIES TESTED AND APPROVED IN ACCORDANCE WITH UL 580.   IN ADDITION, THE SYSTEM PANEL FINISHES, SLIP SHEET, INSULATION, VAPOR RETARDER, ALL ACCESSORIES, COMPONENTS, AND  TRIM AND ALL CONNECTIONS ARE INCLUDED.  THIS INCLUDES ROOF PENETRATION ITEMS SUCH AS VENTS, CURBS, SKYLIGHTS; INTERIOR  OR EXTERIOR GUTTERS AND DOWNSPOUTS; EAVES, RIDGE, HIP, VALLEY, RAKE, GABLE, WALL, OR OTHER ROOF SYSTEM FLASHING INSTALLED  AND ANY OTHER COMPONENTS SPECIFIED WITHIN THIS CONTRACT TO PROVIDE A WEATHERTIGHT ROOF SYSTEM; AND ITEMS SPECIFIED  IN OTHER SECTIONS OF THE SPECIFICATIONS THAT ARE PART OF THE NON-STRUCTURAL METAL ROOFING SYSTEM. ALL MATERIAL DEFICIENCIES, WIND DAMAGE, STRUCTURAL FAILURE, AND LEAKAGE ASSOCIATED WITH THE NON-STRUCTURAL METAL  ROOF SYSTEM COVERED UNDER THIS WARRANTY SHALL BE REPAIRED AS APPROVED BY THE CONTRACTING OFFICER.  THIS WARRANTY  SHALL COVER THE ENTIRE COST OF REPAIR OR REPLACEMENT, INCLUDING ALL MATERIAL, LABOR, AND RELATED MARKUPS.  THE ABOVE  REFERENCED WARRANTY COMMENCED ON THE DATE OF FINAL ACCEPTANCE ON ____________________________ AND WILL REMAIN IN  EFFECT FOR STATED DURATION FROM THIS DATE. SIGNED, DATED, AND NOTARIZED (BY COMPANY PRESIDENT) ____________________________________________________________        (Company President)                      (Date) CONTRACTOR'S [FIVE (5)][TEN (10)][TWENTY (20)] YEAR NO PENAL SUM WARRANTY FOR NON-STRUCTURAL METAL ROOFING SYSTEM (continued) THE CONTRACTOR MUST SUPPLEMENT THIS WARRANTY WITH WRITTEN WARRANTIES FROM THE MANUFACTURER AND/OR INSTALLER OF THE  NON-STRUCTURAL METAL ROOFING SYSTEM.SUBMIT ALONG WITH THE CONTRACTOR'S WARRANTY.  HOWEVER, THE CONTRACTOR IS ULTIMATELY  RESPONSIBLE FOR THIS WARRANTY AS OUTLINED IN THE SPECIFICATIONS AND AS INDICATED IN THIS WARRANTY EXAMPLE. EXCLUSIONS FROM COVERAGE 1.  NATURAL DISASTERS, ACTS OF GOD (LIGHTNING, FIRE, EXPLOSIONS, SUSTAINED WIND FORCES IN EXCESS OF THE DESIGN CRITERIA,  EARTHQUAKES, AND HAIL). 2.  ACTS OF NEGLIGENCE OR ABUSE OR MISUSE BY GOVERNMENT OR OTHER PERSONNEL, INCLUDING ACCIDENTS, VANDALISM, CIVIL  DISOBEDIENCE, WAR, OR DAMAGE CAUSED BY FALLING OBJECTS. 3.  DAMAGE BY STRUCTURAL FAILURE, SETTLEMENT, MOVEMENT, DISTORTION, WARPAGE, OR DISPLACEMENT OF THE BUILDING STRUCTURE  OR ALTERATIONS MADE TO THE BUILDING. 4.  CORROSION CAUSED BY EXPOSURE TO CORROSIVE CHEMICALS, ASH OR FUMES GENERATED OR RELEASED INSIDE OR OUTSIDE THE  BUILDING FROM CHEMICAL PLANTS, FOUNDRIES, PLATING WORKS, KILNS, FERTILIZER FACTORIES, PAPER PLANTS, AND THE LIKE. 5.  FAILURE OF ANY PART OF THE NON-STRUCTURAL METAL ROOF DUE TO ACTIONS BY THE OWNER TO INHIBIT FREE DRAINAGE OF  WATER FROM THE ROOF AND GUTTERS AND DOWNSPOUTS OR ALLOW PONDING WATER TO COLLECT ON THE ROOF SURFACE.  CONTRACTOR'S  DESIGN MUST INSURE FREE DRAINAGE FROM THE ROOF AND NOT ALLOW PONDING WATER. 6.  THIS WARRANTY APPLIES TO THE NON-STRUCTURAL METAL ROOFING SYSTEM.  IT DOES NOT INCLUDE ANY CONSEQUENTIAL DAMAGE  TO THE BUILDING INTERIOR OR CONTENTS WHICH IS COVERED BY THE WARRANTY OF CONSTRUCTION CLAUSE INCLUDED IN THIS CONTRACT. 7.  THIS WARRANTY CANNOT BE TRANSFERRED TO ANOTHER OWNER WITHOUT WRITTEN CONSENT OF THE CONTRACTOR; AND THIS WARRANTY  AND THE CONTRACT PROVISIONS WILL TAKE PRECEDENCE OVER ANY CONFLICTS WITH STATE STATUTES. CONTRACTOR'S [FIVE (5)][TEN (10)][TWENTY (20)] YEAR NO PENAL SUM WARRANTY FOR NON-STRUCTURAL METAL ROOF SYSTEM (continued) **REPORTS OF LEAKS AND ROOF SYSTEM DEFICIENCIES MUST BE RESPONDED TO WITHIN 48 HOURS OF RECEIPT OF NOTICE, BY TELEPHONE  OR IN WRITING, FROM EITHER THE OWNER OR CONTRACTING OFFICER.  INITIATE EMERGENCY REPAIRS TO PREVENT FURTHER ROOF  LEAKS IMMEDIATELY; SUBMIT A WRITTEN PLAN FOR APPROVAL TO REPAIR OR REPLACE THIS ROOF SYSTEM WITHIN SEVEN (7) CALENDAR  DAYS.  COMMENCE ACTUAL WORK FOR PERMANENT REPAIRS OR REPLACEMENT WITHIN 30 DAYS AFTER RECEIPT OF NOTICE, AND COMPLETED  WITHIN A REASONABLE TIME FRAME.  IF THE CONTRACTOR FAILS TO ADEQUATELY RESPOND TO THE WARRANTY PROVISIONS, AS STATED  IN THE CONTRACT AND AS CONTAINED HEREIN, THE CONTRACTING OFFICER MAY HAVE THE NON-STRUCTURAL METAL ROOF SYSTEM REPAIRED  OR REPLACED BY OTHERS AND CHARGE THE COST TO THE CONTRACTOR. IN THE EVENT THE CONTRACTOR DISPUTES THE EXISTENCE OF A WARRANTABLE DEFECT, THE CONTRACTOR MAY CHALLENGE THE OWNER'S  DEMAND FOR REPAIRS AND/OR REPLACEMENT DIRECTED BY THE OWNER OR CONTRACTING OFFICER EITHER BY REQUESTING A CONTRACTING  OFFICER'S DECISION UNDER THE CONTRACT DISPUTES ACT, OR BY REQUESTING THAT AN ARBITRATOR RESOLVE THE ISSUE.  THE REQUEST  FOR AN ARBITRATOR MUST BE MADE WITHIN 48 HOURS OF BEING NOTIFIED OF THE DISPUTED DEFECTS.  UPON BEING INVOKED, THE  PARTIES SHALL, WITHIN TEN (10) DAYS, JOINTLY REQUEST A LIST OF FIVE (5) ARBITRATORS FROM THE FEDERAL MEDIATION AND  CONCILIATION SERVICE.  THE PARTIES MUST CONFER WITHIN TEN (10) DAYS AFTER RECEIPT OF THE LIST TO SEEK AGREEMENT ON  AN ARBITRATOR.  IF THE PARTIES CANNOT AGREE ON AN ARBITRATOR, THE CONTRACTING OFFICER AND THE PRESIDENT OF THE CONTRACTOR'S  COMPANY WILL STRIKE ONE (1) NAME FROM THE LIST ALTERNATIVELY UNTIL ONE (1) NAME REMAINS.  THE REMAINING PERSON IS  THE DULY SELECTED ARBITRATOR.  THE COSTS OF THE ARBITRATION, INCLUDING THE ARBITRATOR'S FEE AND EXPENSES, COURT REPORTER,  COURTROOM OR SITE SELECTED, ETC., WILL BE BORNE EQUALLY BETWEEN THE PARTIES.  EITHER PARTY DESIRING A COPY OF THE  TRANSCRIPT MUST PAY FOR THE TRANSCRIPT.  A HEARING WILL BE HELD AS SOON AS THE PARTIES CAN MUTUALLY AGREE.  A WRITTEN  ARBITRATOR'S DECISION WILL BE REQUESTED NOT LATER THAN 30 DAYS FOLLOWING THE HEARING.  THE DECISION OF THE ARBITRATOR  WILL NOT BE BINDING; HOWEVER, IT WILL BE ADMISSIBLE IN ANY SUBSEQUENT APPEAL UNDER THE CONTRACT DISPUTES ACT. POST A FRAMED COPY OF THIS WARRANTY IN THE MECHANICAL ROOM OR OTHER APPROVED LOCATION DURING THE ENTIRE WARRANTY PERIOD.