Division 7 Ebook Page 12 Insulation Systems for Commercial Buildings

INSULATION SYSTEMS FOR COMMERCIAL BUILDINGS PAGE 7 SOUND ATTENUATION BATT INSULATION FIBERGLASS INSULATION-PRODUCT DATA DESIGN CONSIDERATIONS Several important design and construction details can significantly improve acoustical performance of interior drywall partitions. Door specifications: For optimum noise control, solid wood core or metal doors should be specified. A soft weather-stripping should be used to gasket door tops and sides. Air seals or threshold closures at the bottom of the door will reduce sound transmission. Stagger doors on hallways so that doors do not open across from one another. Ducts: Pay special attention to duct design when planning the layout because outdoor sounds are easily transmitted into the building interior through them. Vertical ducts and ventilation shafts often rattle in windy areas or pop due to thermal expansion and contraction. Owens Corning offers a variety of products-including duct wraps and liners-to effectively reduce duct noise. Equipment: Ideally, HVAC equipment should be positioned away from areas where acoustical performance is important. A well-insulated room with a solid core door can help to isolate the noise of furnaces, air conditioners and other equipment. Plumbing: Eliminate unwanted sounds in pipe runs by designing in swing arms so expansion and contraction can occur without binding. Isolate piping from surrounding structures with resilient mounts. Avoid back-to-back fixture installation. For optimum acoustical integrity, plumbing openings made in walls should be caulked. Electrical: Electrical service boxes, switches and outlets can increase sound transmission if placed back-to-back. Position them on well-insulated interior walls, not on party or corridor walls. Seal the perimeter: Use a nonhardening caulk such as a butyl rubber-based compound to seal walls at both top and bottom plates. Two layers of properly staggered wallboard, with joint compound and tape, will effectively seal corners where required. Special: Unfaced Thermal Batt Insulation should not be used for applications where it could be subject to human contact because of the potential for skin irritation. INSTALLATION Select the SAB product that completely fills the cavity space. Friction-fit Sound Attenuation Batts in place until the interior finish is applied. Supplementary support should be provided if the cavity is open on one side greater than 8'. Cut or split insulation to fit around obstructions such as wiring, junction boxes and outlets. Keep product dry during storage, shipping and installation. APPLICABLE STANDARDS Sound Attenuation Batts comply with ASTM C665, Type I and ASTM E136. ASTM C665 replaces canceled Federal Specification HH-I- 521F and the MEA 332-83-M requirements of New York City. Sound Attenuation Batt Insulation surface burning characteristics were derived from products tested in accordance with ASTM E84, a standard used solely to measure and describe properties of products in response to heat and flame under controlled laboratory conditions. The resulting numerical values-reported to the nearest 5 rating-are not intended to reflect hazards presented by this or any other material under actual fire conditions. PRODUCT 98% APPLIES TO UNFACED PRODUCT

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