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HomeMy WebLinkAbout075423 THERMOPLASTIC POLYOLEFIN (TPO) ROOFING.pdfGiant Eagle Market #6550 The Bridges, Carmel, Indiana Building Shell Bid & Permit DLA Project 2014040.00 August 12, 2014 THERMOPLASTIC POLYOLEFIN (TPO) ROOFING 075423 - 1 SECTION 075423 - THERMOPLASTIC POLYOLEFIN (TPO) ROOFING PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. Adhered thermoplastic polyolefin (TPO) roofing system. 2. Roof insulation. 1.2 DEFINITIONS A. Roofing Terminology: Definitions in ASTM D 1079 and glossary in NRCA's "The NRCA Roofing and Waterproofing Manual" apply to work of this Section. 1.3 PREINSTALLATION MEETINGS A. Preinstallation Roofing Conference: Conduct conference at Project site. 1.4 ACTION SUBMITTALS A. Product Data: For each type of product. B. LEED Submittals: 1. Product Data for Credit SS 7.2: For roof materials, documentation indicating that roof materials comply with Solar Reflectance Index requirement. 2. Product Data for Credit IEQ 4.1: For adhesives and sealants used inside the weatherproofing system, documentation including printed statement of VOC content. 3. Laboratory Test Reports for Credit IEQ 4.1: For adhesives and sealants used inside the weatherproofing system, documentation indicating that products comply with the testing and product requirements of the California Department of Public Health's (formerly, the California Department of Health Services') "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers." C. Shop Drawings: For roofing system. Include plans, elevations, sections, details, and attachments to other work. D. Samples for Verification: For the following products: 1. Sheet roofing, of color required. Giant Eagle Market #6550 The Bridges, Carmel, Indiana Building Shell Bid & Permit DLA Project 2014040.00 August 12, 2014 THERMOPLASTIC POLYOLEFIN (TPO) ROOFING 075423 - 2 2. Walkway pads or rolls, of color required. 1.5 INFORMATIONAL SUBMITTALS A. Research/Evaluation Reports: For components of roofing system, from ICC-ES. B. Sample Warranties: For manufacturer's special warranties. 1.6 CLOSEOUT SUBMITTALS A. Maintenance Data: For roofing system to include in maintenance manuals. 1.7 QUALITY ASSURANCE A. Installer Qualifications: A qualified firm that is approved, authorized, or licensed by roofing system manufacturer to install manufacturer's product and that is eligible to receive manufacturer's special warranty. 1.8 WARRANTY A. Special Warranty: Manufacturer agrees to repair or replace components of roofing system that fail in materials or workmanship within specified warranty period. 1. Warranty Period: 15 years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Basis-of-Design Product: Subject to compliance with requirements, provide Firestone UltraPly TPO or comparable product by one of the following: 1. Carlisle SynTec Incorporated. 2. GAF Materials Corporation. 3. GenFlex Roofing Systems. 4. Johns Manville. 5. Versico Incorporated. B. Source Limitations: Obtain components including roof insulation, fasteners, and accessories for roofing system from same manufacturer as membrane roofing or manufacturer approved by membrane roofing manufacturer. Giant Eagle Market #6550 The Bridges, Carmel, Indiana Building Shell Bid & Permit DLA Project 2014040.00 August 12, 2014 THERMOPLASTIC POLYOLEFIN (TPO) ROOFING 075423 - 3 2.2 PERFORMANCE REQUIREMENTS A. Accelerated Weathering: Roofing system shall withstand 2000 hours of exposure when tested according to ASTM G 152, ASTM G 154, or ASTM G 155. B. Impact Resistance: Roofing system shall resist impact damage when tested according to ASTM D 3746 or ASTM D 4272. C. Roofing System Design: Tested by a qualified testing agency to resist the following uplift pressures: 1. Corner Uplift Pressure: <Insert lbf/sq. ft. (kPa/sq. m)>. 2. Perimeter Uplift Pressure: <Insert lbf/sq. ft. (kPa/sq. m)>. 3. Field-of-Roof Uplift Pressure: <Insert lbf/sq. ft. (kPa/sq. m)>. D. Solar Reflectance Index: Not less than 78 when calculated according to ASTM E 1980, based on testing identical products by a qualified testing agency. E. Energy Star Listing: Roofing system shall be listed on the DOE's ENERGY STAR "Roof Products Qualified Product List" for low-slope roof products. F. Exterior Fire-Test Exposure: ASTM E 108 or UL 790, Class A; for application and roof slopes indicated; testing by a qualified testing agency. Identify products with appropriate markings of applicable testing agency. G. Fire-Resistance Ratings: Comply with fire-resistance-rated assembly designs indicated. Identify products with appropriate markings of applicable testing agency. 2.3 TPO ROOFING A. Fabric-Reinforced TPO Sheet: ASTM D 6878, internally fabric- or scrim-reinforced, uniform, flexible TPO sheet. 1. Thickness: 45 mils, nominal. 2. Exposed Face Color: White; Grey where indicated. 2.4 AUXILIARY ROOFING MATERIALS A. General: Auxiliary materials recommended by roofing system manufacturer for intended use and compatible with roofing. 1. Liquid-type auxiliary materials shall comply with VOC limits of authorities having jurisdiction. 2. Adhesives and sealants that are not on the exterior side of weather barrier shall comply with the following limits for VOC content: a. Plastic Foam Adhesives: 50 g/L. Giant Eagle Market #6550 The Bridges, Carmel, Indiana Building Shell Bid & Permit DLA Project 2014040.00 August 12, 2014 THERMOPLASTIC POLYOLEFIN (TPO) ROOFING 075423 - 4 b. Gypsum Board and Panel Adhesives: 50 g/L. c. Multipurpose Construction Adhesives: 70 g/L. d. Fiberglass Adhesives: 80 g/L. e. Single-Ply Roof Membrane Adhesives: 250 g/L. f. Single-Ply Roof Membrane Sealants: 450 g/L. g. Nonmembrane Roof Sealants: 300 g/L. h. Sealant Primers for Nonporous Substrates: 250 g/L. i. Sealant Primers for Porous Substrates: 775 g/L. j. Other Adhesives and Sealants: 250 g/L. 3. Adhesives and sealants that are not on the exterior side of weather barrier shall comply with the testing and product requirements of the California Department of Public Health's (formerly, the California Department of Health Services') "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers." B. Sheet Flashing: Manufacturer's standard unreinforced TPO sheet flashing, 55 mils thick, minimum, of same color as TPO sheet. C. Bonding Adhesive: Manufacturer's standard water based. D. Slip Sheet: Manufacturer's standard, of thickness required for application. E. Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion- resistance provisions in FM Global 4470, designed for fastening roofing to substrate, and acceptable to roofing system manufacturer. F. Miscellaneous Accessories: Provide metal termination bars, metal battens, pourable sealers, preformed cone and vent sheet flashings, preformed inside and outside corner sheet flashings, T-joint covers, lap sealants, termination reglets, and other accessories. 2.5 ROOF INSULATION A. Polyisocyanurate Board Insulation: ASTM C 1289, Type II, Class 1, Grade 3, felt or glass-fiber mat facer on both major surfaces. 1. Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. Atlas Roofing Corporation. b. Carlisle SynTec Incorporated. c. Firestone Building Products. d. GAF Materials Corporation. e. Insulfoam LLC; a Carlisle company. f. Johns Manville. g. Rmax, Inc. Giant Eagle Market #6550 The Bridges, Carmel, Indiana Building Shell Bid & Permit DLA Project 2014040.00 August 12, 2014 THERMOPLASTIC POLYOLEFIN (TPO) ROOFING 075423 - 5 B. Tapered Insulation: Provide factory-tapered insulation boards fabricated to slope of 1/4 inch per 12 inches unless otherwise indicated. C. Provide preformed saddles, crickets, tapered edge strips, and other insulation shapes where indicated for sloping to drain. Fabricate to slopes indicated. 2.6 INSULATION ACCESSORIES A. Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion- resistance provisions in FM Global 4470, designed for fastening roof insulation and cover boards to substrate, and acceptable to roofing system manufacturer. B. Insulation Adhesive: Insulation manufacturer's recommended adhesive formulated to attach roof insulation to substrate or to another insulation layer. C. Cover Board: ASTM C 208, Type II, Grade 2, cellulosic-fiber insulation board, 1/2 inch thick. 2.7 WALKWAYS A. Flexible Walkways: Factory-formed, nonporous, heavy-duty, slip-resisting, surface-textured walkway pads or rolls, approximately 3/16 inch thick and acceptable to roofing system manufacturer. PART 3 - EXECUTION 3.1 ROOFING INSTALLATION, GENERAL A. Install roofing system according to roofing system manufacturer's written instructions. B. Complete terminations and base flashings and provide temporary seals to prevent water from entering completed sections of roofing system at the end of the workday or when rain is forecast. Remove and discard temporary seals before beginning work on adjoining roofing. C. Install roofing and auxiliary materials to tie in to existing roofing to maintain weathertightness of transition. 3.2 INSULATION INSTALLATION A. Coordinate installing roofing system components so insulation is not exposed to precipitation or left exposed at the end of the workday. B. Install tapered insulation under area of roofing to conform to slopes indicated. Giant Eagle Market #6550 The Bridges, Carmel, Indiana Building Shell Bid & Permit DLA Project 2014040.00 August 12, 2014 THERMOPLASTIC POLYOLEFIN (TPO) ROOFING 075423 - 6 C. Install insulation under area of roofing to achieve required thickness. Where overall insulation thickness is 2.7 inches or greater, install two or more layers with joints of each succeeding layer staggered from joints of previous layer a minimum of 6 inches in each direction. 1. Where installing composite and noncomposite insulation in two or more layers, install noncomposite board insulation for bottom layer and intermediate layers, if applicable, and install composite board insulation for top layer. D. Mechanically Fastened Insulation: Install each layer of insulation and secure to deck using mechanical fasteners specifically designed and sized for fastening specified board-type roof insulation to deck type. 1. Fasten insulation to resist uplift pressure at corners, perimeter, and field of roof. E. Install cover boards over insulation with long joints in continuous straight lines with end joints staggered between rows. Offset joints of insulation below a minimum of 6 inches in each direction. Loosely butt cover boards together. 1. Fasten cover boards to resist uplift pressure at corners, perimeter, and field of roof. 3.3 ADHERED ROOFING INSTALLATION A. Adhere roofing over area to receive roofing according to roofing system manufacturer's written instructions. Unroll roofing and allow to relax before retaining. B. Accurately align roofing, and maintain uniform side and end laps of minimum dimensions required by manufacturer. Stagger end laps. C. Bonding Adhesive: Apply to substrate and underside of roofing at rate required by manufacturer, and allow to partially dry before installing roofing. Do not apply to splice area of roofing. D. In addition to adhering, mechanically fasten roofing securely at terminations, penetrations, and perimeter of roofing. E. Seams: Clean seam areas, overlap roofing, and hot-air weld side and end laps of roofing and sheet flashings according to manufacturer's written instructions, to ensure a watertight seam installation. 1. Test lap edges with probe to verify seam weld continuity. Apply lap sealant to seal cut edges of sheet. 2. Verify field strength of seams a minimum of twice daily, and repair seam sample areas. 3. Repair tears, voids, and lapped seams in roofing that do not comply with requirements. F. Spread sealant bed over deck-drain flange at roof drains, and securely seal roofing in place with clamping ring. Giant Eagle Market #6550 The Bridges, Carmel, Indiana Building Shell Bid & Permit DLA Project 2014040.00 August 12, 2014 THERMOPLASTIC POLYOLEFIN (TPO) ROOFING 075423 - 7 3.4 BASE FLASHING INSTALLATION A. Install sheet flashings and preformed flashing accessories, and adhere to substrates according to roofing system manufacturer's written instructions. B. Apply bonding adhesive to substrate and underside of sheet flashing at required rate, and allow to partially dry. Do not apply to seam area of flashing. C. Flash penetrations and field-formed inside and outside corners with cured or uncured sheet flashing. D. Clean seam areas, overlap, and firmly roll sheet flashings into the adhesive. Hot-air weld side and end laps to ensure a watertight seam installation. E. Terminate and seal top of sheet flashings. 3.5 WALKWAY INSTALLATION A. Flexible Walkways: Install walkway products in locations indicated. Heat weld to substrate or adhere walkway products to substrate with compatible adhesive according to roofing system manufacturer's written instructions. B. Roof-Paver Walkways: Install walkway roof pavers according to manufacturer's written instructions in locations indicated, to form walkways. Leave 3 inches of space between adjacent roof pavers. 3.6 PROTECTING AND CLEANING A. Protect roofing system from damage and wear during remainder of construction period. When remaining construction does not affect or endanger roofing, inspect roofing for deterioration and damage, describing its nature and extent in a written report, with copies to Architect and Owner. B. Correct deficiencies in or remove roofing system that does not comply with requirements, repair substrates, and repair or reinstall roofing system to a condition free of damage and deterioration at time of Substantial Completion and according to warranty requirements. C. Clean overspray and spillage from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction. END OF SECTION 075423