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HomeMy WebLinkAboutFile Documents.203 E Hallam St.0174.2018 (7).ARBKManufacturer Georgia-Pacific Gypsum Georgia-Pacific Canada 133 Peachtree Street 2180 Meadowvale Boulevard, Suite 200 Atlanta, GA 30303 Mississauga, ON L5N 5S3 Technical Service Hotline: 1-800-225-6119 Description DensDeck® Roof Board is an exceptional fire barrier, thermal barrier, coverboard and recovery board used in various commercial roofing systems. The DensDeck Roof Board design employs fiberglass mats front and back that are mechanically bonded to a high density gypsum core, providing excellent fire resistance and wind uplift properties. The unique construction of DensDeck Roof Board provides superior flute spanning that stiffens and provides increased foot traffic resistance to the roof deck. Additionally, DensDeck Roof Board has been shown to withstand delamination, deterioration and job-site damage far more effectively than roofing membrane substrates such as paperfaced gypsum board, fiberboard and perlite insulation. DensDeck Roof Board has scored a 10, the highest level of performance for mold resistance per the ASTM D3273 test method. Primary Uses Roof system manufacturers and designers have found DensDeck Roof Board to be compatible with many types of roofing systems, including: built-up, modified bitumen, single ply, metal systems, wood shingle and shake, tile, slate, as well as a recovery board and overlayment protection board for polyisocyanurate and polystyrene insulation. DensDeck Roof Board can also be used as a form board for poured gypsum concrete deck in roof applications as well as a substrate for spray foam roofing systems. 1/2” (12.7 mm) and 5/8” (15.9 mm) DensDeck Roof Board may also be used in vertical applications as a backer board or liner for the roof side of parapet walls. Some membrane manufacturers have hot mop asphalt or torch applications directly to DensDeck Roof Board without using a primer or base sheet. Consult with the system manufacturer for their recommendations with this application. DensDeck Roof Board is the preferred substrate for vapor retarders. Standards and Code Approvals DensDeck Roof Boards are manufactured to meet ASTM C1177 and have the following approvals: • Florida Product Approved • Miami-Dade County, Product Control Approved Recommendations and Limitations DensDeck Roof Boards are manufactured to act with a properly designed roof system following good roofing practices. The actual use of DensDeck Roof Board as a roofing component in any system or assembly is the responsibility of the roofing system’s design authority. Consult with the appropriate system manufacturer and/or design authority for system and assembly specifications and instructions on applying other products to DensDeck Roof Board. Georgia-Pacific does not warrant and is not responsible for any systems or assemblies utilizing DensDeck Roof Board or any component in such systems or assemblies other than DensDeck Roof Board. The need for a separator sheet between the DensDeck Roof Board and the roofing membrane must be determined by the roof membrane manufacturer or roofing system designer. Confirm any priming requirements with the membrane manufacturer. When applying solvent-based adhesives or primers, allow sufficient time for the solvent to flash off to avoid damage to roofing components. DensDeck Roof Boards should not be subjected to abnormal or excessive loads or foot traffic, such as, but not limited to, use on plaza decks or under steel-wheeled equipment that may fracture or damage the panels. Provide suitable roofing system protection when required. When using DensDeck Roof Boards for hot-mopped applications, Georgia-Pacific recommends maximum asphalt application temperatures of 425°F (218°C) to 450°F (232°C). Application temperatures above these recommended temperatures may adversely affect roof system performance. Consult and follow the roofing system manufacturer’s specifications for full mopping applications and temperature requirements. Conditions beyond the control of Georgia-Pacific, such as weather conditions, dew, leaks, application temperatures and techniques may cause adverse effects with roofing systems. Moisture Management DensDeck Roof Boards, like other components used in roofing systems, must be protected from exposure to moisture before, during and after installation. Remove the plastic packaging from all DensDeck Roof Board immediately upon receipt of delivery. Failure to remove the plastic packaging may result in entrapment of con- densation or moisture. DensDeck Roof Board stored outside must be stored level and off the ground and protected by a breathable waterproof covering. Provide means for air circulation around and under stored bundles of DensDeck Roof Board. DensDeck Roof Board must be covered the same day as installed. Avoid application of DensDeck Roof Boards during rain, heavy fog and any other conditions that may deposit moisture on the surface, and avoid the overuse of non-vented, direct-fired heaters during winter months. When roofing systems are installed on new poured concrete or light weight concrete decks or when re-roofing over an existing concrete deck, a vapor barrier should be installed above the concrete to limit the migration of water from the concrete into the roof assembly. Always consult the roofing system manufacturer or design authority for specific instructions for applying other products to DensDeck Roof Boards. Moisture vapor movement by convection must be eliminated, and the flow of water by gravity through imperfections in the roof system must be controlled. After a leak has occurred, no condensation on the upper surface of the system should be tolerated, and the water introduced by the leak must be dissipated to the building interior in a minimum amount of time. Although DensDeck Roof Boards are engineered with fiberglass facings and high density gypsum cores, the presence of free moisture can have a detrimental effect on the performance of the product and the installation of roofing membranes. For example, hot asphalt applications can blister; torched modified bitumen may not properly bond; and adhesives for single ply membranes may not dry properly. Moisture accumulation may also significantly decrease wind uplift and vertical pull resistance in the system or assembly. DensDeck Roof Boards containing excessive free moisture content may need to be evaluated for structural stability to assure wind uplift performance. Technical Service Hotline 1.800.225.6119 or www.densdeck.com Submittal Approvals Job Name Contractor Date Stamps / Signatures continued 06/27/2018 U.S.A. Georgia-Pacific Gypsum LLC Georgia-Pacific Gypsum II LLC Canada Georgia-Pacific Canada LP SALES INFORMATION AND ORDER PLACEMENT U.S.A. West: 1-800-824-7503 Midwest: 1-800-876-4746 South Central: 1-800-231-6060 Southeast: 1-800-327-2344 Northeast: 1-800-947-4497 CANADA Canada Toll Free: 1-800-387-6823 Quebec Toll Free: 1-800-361-0486 TECHNICAL INFORMATION U.S.A. and Canada: 1-800-225-6119, www.gpgypsum.com 1. Tested in accordance with ASTM C473 method B. 2. Tested in accordance with ASTM E661. 3. Tested in accordance with ASTM E96 (dry cup method). 4. Tested in accordance with ASTM C518 (heat flow meter). 5. Tested in accordance with ASTM C1177. 6. Tested in accordance with ASTM C473. Properties 1/4” (6.4 mm) 1/2” (12.7 mm) 5/8” (15.9 mm) Thickness, nominal 1/4” (6.4 mm) ± 1/16” (1.6 mm) 1/2” (12.7 mm) ± 1/32” (.8 mm) 5/8” (15.9 mm) ± 1/32” (.8 mm) Width, standard 4’ (1219 mm) ± 1/8” (3 mm) 4’ (1219 mm) ± 1/8” (3 mm) 4’ (1219 mm) ± 1/8” (3 mm) Length, standard 8’ (2438 mm) ± 1/4” (6.4 mm) 8’ (2438 mm) ± 1/4” (6.4 mm) 8’ (2438 mm) ± 1/4” (6.4 mm) Weight, nominal, lbs./sq. ft. (Kg/m2) 1.2 (5.9) 2.0 (9.8) 2.5 (12.2) Surfacing Fiberglass mat Fiberglass mat Fiberglass mat Flexural Strength1, parallel, lbf. min. (N) ≥40 (178) ≥80 (356) ≥100 (444) Flute Spanability 2 2-5/8” (67 mm) 5” (127 mm) 8” (203 mm) Permeance3, Perms (ng/Pa•S•m2) >50 (2850) >35 (1995) >32 (1824) R Value 4, ft2•°F •hr/BTU (m2•K/W) .28 .56 .67 Linear Variation with Change in Temp., in/in °F (mm/mm/C°) 8.5 x 10-6 (15.3 x 10-6) 8.5 x 10-6 (15.3 x 10-6) 8.5 x 10-6 (15.3 x 10-6) Linear Variation with Change in Moisture 6.25 x 10-6 6.25 x 10-6 6.25 x 10-6 Water Absorption5, % max <10 <10 <10 Compressive Strength6, psi nominal 900 900 900 Surface Water Absorption, grams, nominal <2.5 <2.5 <2.5 Flame Spread, Smoke Developed (ASTM E84) 0/0 0/0 0/0 Bending Radius 5’ (1524 mm) 8’ (2438 mm) 12’ (3658 mm) Technical Service Hotline 1.800.225.6119 or www.densdeck.com Physical Properties Fire Resistance Classifications DensDeck® Roof Boards are excellent fire barriers over combustible and noncombustible roof decks, including steel decks. UL 790 Classification. DensDeck Roof Boards have been classified by Underwriters Laboratories (UL) for use as a fire barrier over combustible and noncombustible decks in accordance with the ANSI/UL 790 test standard. The UL classification includes a comprehensive Class A, B or C rating. For additional information concerning the UL 790 classification, consult the UL Certification Directory. UL 1256 Classification. DensDeck Roof Boards have also been classified by UL in roof deck constructions for internal (under deck) fire exposure in accordance with the ANSI/UL 1256 Steiner Tunnel test. For additional information concerning the UL 1256 classification, consult the UL Certification Directory. FM Class 1 Approvals. DensDeck Roof Boards are included in numerous roofing assemblies with a Factory Mutual (FM) Class 1 fire rating. 1/4” (6.4 mm) DensDeck Roof Boards have passed testing under the FM Calorimeter Standard 4450 and have been approved by FM as such for insulated steel deck roofs when installed according to the conditions identified by FM. For more information concerning FM Approvals and FM Class 1 assemblies with DensDeck Roof Boards, consult FM or RoofNav®. Type X. 5/8” (15.9 mm) DensDeck® Fireguard® Roof Boards are manufactured to meet the “Type X” requirements of ASTM C1177 for increased fire resistance beyond regular gypsum board. UL Fire Resistance Ratings. 5/8” (15.9 mm) DensDeck Fireguard Roof Boards are designated as Type DD by UL and included in assembly designs investigated by UL for hourly fire resistance ratings. 5/8” (15.9 mm) DensDeck Fireguard Roof Boards may also replace any unclassified 5/8” (15.9 mm) gypsum board in an assembly in the UL Fire Resistance Directory under the prefix “P”. Flame Spread and Smoke Developed. When tested in accordance with ASTM E84, DensDeck Roof Boards had Flame Spread 0, Smoke Developed 0. Wind Uplift DensDeck Roof Boards are included in numerous assemblies evaluated by FM or other independent laboratories for wind uplift performance. For information concerning such assemblies, please visit www.roofnav.com. Handling and Use–CAUTION This product contains fiberglass facings which may cause skin irritation. Dust and fibers produced during the handling and installation of the product may cause skin, eye and respiratory tract irritation. Avoid breathing dust and minimize contact with skin and eyes. Wear long sleeve shirts, long pants and eye protection. Always maintain adequate ventilation. Use a dust mask or NIOSH/MSHA approved respirator as appropriate in dusty or poorly ventilated areas. TRADEMARKS DENSDECK, FIREGUARD and the GEORGIA-PACIFIC logo are trademarks owned by or licensed to Georgia-Pacific Gypsum LLC. ROOFNAV is a registered mark of FM Global. WARRANTIES, REMEDIES AND TERMS OF SALE For current warranty information for this product, please go to www.gpgypsum.com and select the product for warranty information. All sales of this product by Georgia-Pacific are subject to our Terms of Sale available at www.gpgypsum.com. UPDATES AND CURRENT INFORMATION The information in this document may change without notice. Visit our website at www.gpgypsum.com for updates and current information. CAUTION For product fire, safety and use information, go to www.buildgp.com/safetyinfo or call 1-800-225-6119. FIRE SAFETY CAUTION Passing a fire test in a controlled laboratory setting and/or certifying or labeling a product as having a one-hour, two-hour, or any other fire resistance or protection rating and, therefore, as acceptable for use in certain fire rated assemblies/systems, does not mean that either a particular assembly/system incorporating the product, or any given piece of the product itself, will necessarily provide one-hour fire resistance, two-hour fire resistance, or any other specified fire resistance or protection in an actual fire. In the event of an actual fire, you should immediately take any and all actions necessary for your safety and the safety of others without regard for any fire rating of any product or assembly/system. ©2015 Georgia-Pacific Gypsum LLC. All rights reserved. 5/15. GP-TM Lit. Item #101516. 06/27/2018