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HomeMy WebLinkAbout07311.pdf BICKFORD OF CARMEL, IN 12/12/2012 ASPHALT SHINGLES 07311 - 1 SECTION 07311 - ASPHALT SHINGLES PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Asphalt Shingles. 2. Underlayment. 3. Roof/Ridge Vents. 4. Roof Flashing & Trim. B. Related Sections: 1. Division 6 Section "Rough Carpentry" for wood framing. 2. Division 6 Section "Sheathing" for roof sheathing. 3. Division 7 Section "Sheet Metal Flashing and Trim" for metal roof penetration flashings counter flashings and flashings. 4. Division 7 Section "Roof Accessories" for ridge vents. 1.3 DEFINITION A. Roofing Terminology: See ASTM D 1079 and glossary of NRCA's "The NRCA Roofing and Waterproofing Manual" for definitions of terms related to roofing work in this Section. 1.4 SUBMITTALS A. Product Data: For each type of product indicated. B. Samples for Verification: For the following products, of sizes indicated, to verify color selected: 1. Asphalt Shingle: Full size. 2. Ridge and Hip Cap Shingles: Full size. 3. Ridge Vent: 12-inch- (300-mm-) long Sample. 4. Self-Adhering Underlayment: 12 inches (300 mm) square. C. Product Test Reports: Based on evaluation of comprehensive tests performed by manufacturer and witnessed by a qualified testing agency, for asphalt shingles. D. Maintenance Data: For each type of asphalt shingle to include in maintenance manuals. E. Warranties: Sample of special warranties. BICKFORD OF CARMEL, IN 12/12/2012 ASPHALT SHINGLES 07311 - 2 1.5 QUALITY ASSURANCE A. Installer Qualifications: Manufacturer's authorized representative who is trained and approved for installation of units required for this Project. B. Source Limitations: Obtain ridge and hip cap shingles ridge vents felt underlayment and self- adhering sheet underlayment from single source from single manufacturer. C. Fire-Resistance Characteristics: Where indicated, provide asphalt shingles and related roofing materials identical to those of assemblies tested for fire resistance per test method below by UL or another testing and inspecting agency acceptable to authorities having jurisdiction. Identify products with appropriate markings of applicable testing agency. 1. Exterior Fire-Test Exposure: Class A; ASTM E 108 or UL 790, for application and roof slopes indicated. 1.6 DELIVERY, STORAGE, AND HANDLING A. Store roofing materials in a dry, well-ventilated, weather tight location according to asphalt shingle manufacturer's written instructions. Store underlayment rolls on end on pallets or other raised surfaces. Do not double stack rolls. 1. Handle, store, and place roofing materials in a manner to avoid significant or permanent damage to roof deck or structural supporting members. B. Protect unused underlayment from weather, sunlight, and moisture when left overnight or when roofing work is not in progress. 1.7 PROJECT CONDITIONS A. Environmental Limitations: Do not deliver or install asphalt shingles until spaces are enclosed and weather tight, wet work in spaces is complete and dry, and temporary HVAC system is operating and maintaining ambient temperature and humidity conditions at occupancy levels during the remainder of the construction period. 1. Install self-adhering sheet underlayment within the range of ambient and substrate temperatures recommended by manufacturer. 1.8 WARRANTY A. Special Warranty: Standard form in which manufacturer agrees to repair or replace asphalt shingles that fail in materials or workmanship within specified warranty period. 1. Failures include, but are not limited to, the following: a. Manufacturing defects. b. Structural failures including failure of asphalt shingles to self-seal after a reasonable time. 2. Material Warranty Period: 30 years from date of Substantial Completion, prorated, with first five years nonprorated. BICKFORD OF CARMEL, IN 12/12/2012 ASPHALT SHINGLES 07311 - 3 3. Wind-Speed Warranty Period: Asphalt shingles will resist blow-off or damage caused by wind speeds up to 90 mph (36 m/s) for 10 years from date of Substantial Completion. 4. Algae-Discoloration Warranty Period: Asphalt shingles will not discolor five years from date of Substantial Completion. 5. Workmanship Warranty Period: 10 years from date of Substantial Completion. 1.9 EXTRA MATERIALS A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. 1. Asphalt Shingles: 100 sq. ft (9.3 sq. m) of each type, in unbroken bundles. PART 2 - PRODUCTS 2.1 GLASS-FIBER-REINFORCED ASPHALT SHINGLES A. Laminated-Strip Asphalt Shingles: ASTM D 3462, laminated, multi-ply overlay construction, glass-fiber reinforced, mineral-granule surfaced, and self-sealing. 1. Basis-of-Design Product: Subject to compliance with requirements, provide GAF, Timberline HD, Lifetime High Definition Shingles, or comparable product by one of the following: a. CertainTeed Corporation. b. TAMKO Roofing Products, Inc. 2. Butt Edge: Straight cut. 3. Strip Size: Manufacturer's standard. 4. Algae Resistance: Granules treated to resist algae discoloration. 5. Color and Blends: Weathered Wood. B. Starter Strip: Pre-cut eave and rake starter strips. ASTM D 3462, laminated, multi-ply overlay construction, glass-fiber reinforced, mineral-granule surfaced, and self-sealing. 1. Basis-of-Design Product: Subject to compliance with requirements, provide GAF, Pro- Start Eave/Rake Starter Strip, or comparable product by one of the following: a. CertainTeed Corporation. b. TAMKO Roofing Products, Inc. C. Hip and Ridge Shingles: Manufacturer's standard units to match asphalt shingles. 2.2 UNDERLAYMENT MATERIALS A. Roof Deck Protection: ASTM D 226 or ASTM D 4869, breathable, UV stabilized, spun-bound polypropylene sheet underlayment. Installed with manufacturer’s required plastic cap nails or plastic cap staples. 1. Basis-of-Design Product: Subject to compliance with requirements, provide GAF, Deck- Armour™ Roof Deck Protection or comparable product by one of the following: BICKFORD OF CARMEL, IN 12/12/2012 ASPHALT SHINGLES 07311 - 4 a. Atlas Roofing Corporation. b. Carlisle Coatings & Waterproofing, Inc. c. CertainTeed Corporation. d. Johns Manville. e. Owens Corning. B. Self-Adhering Sheet Leak Barrier, Mat Surfaced: ASTM D 1970, minimum of 50-mil- (1.4-mm-) thick sheet; glass-fiber-mat-reinforced, SBS-modified asphalt; mineral-granule surfaced; with release paper backing; cold applied. 1. Basis-of-Design Product: Subject to compliance with requirements, provide GAF, WeatherWatch XT, or comparable product by one of the following: a. Atlas Roofing Corporation. b. Carlisle Coatings & Waterproofing, Inc. c. CertainTeed Corporation. d. Johns Manville. e. Owens Corning. 2.3 RIDGE VENTS A. Rigid Ridge Vent: Manufacturer's standard, rigid section high-density polypropylene or other UV-stabilized plastic ridge vent with nonwoven geotextile filter strips and external deflector baffles; for use under ridge shingles. 1. Basis-of-Design Product: Subject to compliance with requirements, GAF, Cobra® Snow Country; product name or designation or comparable product by one of the following: a. Lomanco, Inc. b. Mid-America Building Products. c. Owens Corning. d. Trimline Building Products. 2. Minimum Net Free Area: 16 sq in. 2.4 ROOF LOUVERS A. Roof Louver (Exhaust): Manufacturer’s standard, pre-finished aluminum, slant-backed roof louver with fully enclosed hood. 1. Basis-of-Design Product: Subject to compliance with requirements, GAF, SSB960A, Metal Roof Louver. 2. Minimum Net Free Area: 60 square inches. 3. Color: Shingle Match™ Weathered Wood 2.5 ACCESSORIES A. Asphalt Roofing Cement: ASTM D 4586, Type II, asbestos free. B. Roofing Nails: ASTM F 1667; aluminum, stainless-steel, copper, or hot-dip galvanized-steel wire shingle nails, minimum 0.120-inch- (3-mm-) diameter, barbed shank, sharp-pointed, with a minimum 3/8-inch- (9.5-mm-) diameter flat head and of sufficient length to penetrate 3/4 inch (19 mm) into solid wood decking or extend at least 1/8 inch (3 mm) through OSB or plywood sheathing. BICKFORD OF CARMEL, IN 12/12/2012 ASPHALT SHINGLES 07311 - 5 1. Where nails are in contact with metal flashing, use nails made from same metal as flashing. C. Felt Underlayment Nails: Aluminum, stainless-steel, or hot-dip galvanized-steel wire with low- profile capped heads or disc caps, 1-inch (25-mm) minimum diameter. 2.6 METAL FLASHING AND TRIM A. General: Comply with requirements in Division 7 Section "Sheet Metal Flashing and Trim." 1. Sheet Metal: Anodized aluminum. B. Fabricate sheet metal flashing and trim to comply with recommendations in SMACNA's "Architectural Sheet Metal Manual" that apply to design, dimensions, metal, and other characteristics of the item. 1. Step Flashings: Fabricate with a headlap of 2 inches (50 mm) and a minimum extension of 4 inches (100 mm) over the underlying asphalt shingle and up the vertical surface. 2. Open-Valley Flashings: Fabricate in lengths not exceeding 10 feet (3 m) with 1-inch- (25- mm-) high, inverted-V profile at center of valley and equal flange widths of 12 inches (300 mm). 3. Drip Edges: Fabricate in lengths not exceeding 10 feet (3 m) with 2-inch (50-mm) roof- deck flange and 1-1/2-inch (38-mm) fascia flange with 3/8-inch (9.6-mm) drip at lower edge. C. Vent Pipe Flashings: ASTM B 749, Type L51121, at least 1/16 inch (1.6 mm) thick. Provide lead sleeve sized to slip over and turn down into pipe, soldered to skirt at slope of roof, and extending at least 4 inches (100 mm) from pipe onto roof. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work. 1. Examine roof sheathing to verify that sheathing joints are supported by framing and blocking or metal clips and that installation is within flatness tolerances. 2. Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and completely anchored; and that provision has been made for flashings and penetrations through asphalt shingles. B. Prepare written report, endorsed by Installer, listing conditions detrimental to performance of the Work. C. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 UNDERLAYMENT INSTALLATION A. General: Comply with underlayment manufacturer's written installation instructions applicable to products and applications indicated unless more stringent requirements apply. BICKFORD OF CARMEL, IN 12/12/2012 ASPHALT SHINGLES 07311 - 6 B. Roof Protection Underlayment: Install in strict accordance to the manufacturer’s written installation instructions. Install on roof deck parallel with and starting at the eaves. Lap sides a minimum of 2 inches (50 mm) over underlying course. Lap ends a minimum of 4 inches (100 mm). Stagger end laps between succeeding courses at least 72 inches (1830 mm). Fasten with manufacturer’s recommended plastic cap nails or plastic cap staples. 1. Install felt underlayment on roof deck not covered by self-adhering sheet underlayment. Lap sides of roof protection over self-adhering sheet underlayment not less than 3 inches (75 mm) in direction to shed water. Lap ends of felt not less than 6 inches (150 mm) over self-adhering sheet underlayment. 2. Install fasteners at no more than 36 inch (900 mm) o.c. 3. Apply one layer on roof slopes greater than 4:12. Apply two layers on roof slopes 4:12 or less. A. Self-Adhering Sheet Underlayment: Install in strict accordance to the manufacturer’s written installation instructions. Install, wrinkle free, on roof deck. Comply with low-temperature installation restrictions of underlayment manufacturer if applicable. Install at locations indicated below, lapped in direction to shed water. Lap sides not less than 3-1/2 inches (89 mm). Lap ends not less than 6 inches (150 mm) staggered 24 inches (600 mm) between courses. Roll laps with roller. Cover underlayment within seven days. 1. Eaves: Extend from edges of eaves 24 inches (600 mm) beyond interior face of exterior wall. 2. Valleys: Extend from lowest to highest point 18 inches (450 mm) on each side. 3. Sidewalls: Extend beyond sidewall 18 inches (450 mm), and return vertically against sidewall not less than 4 inches (100 mm). 4. Roof Slope Transitions: Extend 18 inches (450 mm) on each roof slope. 3.3 METAL FLASHING INSTALLATION A. General: Install metal flashings and other sheet metal to comply with requirements in Division 7 Section "Sheet Metal Flashing and Trim." 1. Install metal flashings according to recommendations in ARMA's "Residential Asphalt Roofing Manual" and asphalt shingle recommendations in NRCA's "The NRCA Roofing and Waterproofing Manual." B. Step Flashings: Install with a headlap of 2 inches (50 mm) and extend over the underlying asphalt shingle and up the vertical surface. Fasten to roof deck only. C. Open-Valley Flashings: Install centered in valleys, lapping ends at least 8 inches (200 mm) in direction to shed water. Fasten upper end of each length to roof deck beneath overlap. 1. Secure hemmed flange edges into metal cleats spaced 12 inches (300 mm) apart and fastened to roof deck. 2. Adhere 9-inch- (225-mm-) wide strip of self-adhering sheet to metal flanges and to self- adhering sheet underlayment. D. Rake Drip Edges: Install rake drip edge flashings over underlayment and fasten to roof deck. E. Eave Drip Edges: Install eave drip edge flashings below underlayment and fasten to roof sheathing. F. Pipe Flashings: Form flashing around pipe penetrations and asphalt shingles. Fasten and seal to asphalt shingles as recommended by manufacturer. BICKFORD OF CARMEL, IN 12/12/2012 ASPHALT SHINGLES 07311 - 7 3.4 ASPHALT SHINGLE INSTALLATION A. General: Install asphalt shingles according to manufacturer's written instructions, recommendations in ARMA's "Residential Asphalt Roofing Manual," and asphalt shingle recommendations in NRCA's "The NRCA Roofing and Waterproofing Manual." B. Install starter strip along lowest roof edge, at least 6 1/2 inches wide with self-sealing strip face up at roof edge. 1. Extend asphalt shingles ¾ inch over fasciae at eaves and rakes. 2. Install starter strip along rake edge. C. Install first and remaining courses of asphalt shingles stair-stepping diagonally across roof deck with manufacturer's recommended offset pattern at succeeding courses, maintaining uniform exposure. D. Install asphalt shingles by single-strip column or racking method, maintaining uniform exposure. Install full-length first course followed by cut second course, repeating alternating pattern in succeeding courses. E. Fasten asphalt shingle strips with a minimum of five roofing nails located according to manufacturer's written instructions. 1. Where roof slope is less than 4:12, seal asphalt shingles with asphalt roofing cement spots. 2. When ambient temperature during installation is below 50 deg F (10 deg C), seal asphalt shingles with asphalt roofing cement spots. F. Ridge Vents: Install continuous ridge vents over asphalt shingles according to manufacturer's written instructions. Fasten with roofing nails of sufficient length to penetrate sheathing. G. Ridge and Hip Cap Shingles: Maintain same exposure of cap shingles as roofing shingle exposure. Lap cap shingles at ridges to shed water away from direction of prevailing winds. Fasten with roofing nails of sufficient length to penetrate sheathing. 1. Fasten ridge cap asphalt shingles to cover ridge vent without obstructing airflow. END OF SECTION 07311