USG Sheetrock® Brand Acoustical Sealant is water-based, highly elastic, easy applied to vertical, horizontal and overhead surfaces without sagging, excellent for fire-rated partitions.
Excellent sound-flanking material (supports high STC ratings)
Superior performance as a fire caulk in UL Classified joint and throughpenetration firestop systems
Ideal for use in smoke and/or sound assemblies
Meets ASTM C834 specifications for latex sealants
Grade 0°F (-18°C) low temperature flexibility, strong bond
Low VOC
Specifications
Product Data
Testing and Classification: Meets ASTM C834 Standard Specification for Latex-Based Sealing Compounds tested in accordance with ASTM C731, ASTM C732, ASTM C734, ASTM C736, ASTM D2202, ASTM D2203 and ASTM D2377. Also tested in accordance with ASTM E84 (surface-burning characteristics), ASTM E90 (sound tests) and ASTM E1966 (fire-resistant joint systems). ASTM E814 (through-penetration firestop systems). Surface-Burning Characteristics: 0/0 (flame spread/smoke developed) Color: Off-white Solids: 73% ± 3% Weight: 13.4 lbs./gal. (1.6Kg/L in container) pH: 8.5–9.5 VOC: 15 g/L Shelf Life: One year (in original, unopened container) under good storage practices. Note: See
4 under Limitations. Coverage (approximate): 85 linear ft. of 1/4” bead/29 oz. ctdg.; 37 linear ft. of 3/8” bead/29 oz. ctdg.; 22 linear ft. of 1/2” bead/29 oz. ctdg.; 11 linear ft. of 5/8” bead/29 oz. ctdg; 392 ft. of 1/4” bead/gal.; 174 ft. of 3/8” bead/gal.; 98 ft. of 1/2” bead/gal. Packaging: 29 oz. (850 ml) cartridge; 5 gal. (18.9 L) pail
Applications
USG Sheetrock® Brand Acoustical Sealant shall be applied in accordance with ASTM C919 using conventional caulking equipment. In joint and firestop systems, apply the USG Sheetrock® Brand Acoustical Sealant to minimum thickness specified in the individual fire-rated system. In shaft wall applications, the maximum separation between bottom of floor and top of liner panel is 1” (25mm). Maximum separation between bottom of floor and top of gypsum board sheets at time of installation of joint system is 5/8” (16mm). The joint system is designed to accommodate a maximum 25% compression or extension from its installed width on the finished side of the wall. For all other joints, the sealant application should be specified by a design professional who should give consideration to using a backer rod or bond tape where the gap exceeds 5/8”. For through-wall penetration designs where piping is installed either concentrically or eccentrically within a cylindrical sleeve application, the design professional shall specify a spacer, packing material, or backer rod that is compatible / non-reactive with both cylindrical outer sleeve and pipe material. The space, packing material, and backer rod shall also serve the function of preventing pipe from contact with the outer sleeve. In joints too shallow to take a backer rod, use a bond breaker tape to prevent three-sided adhesion. In acoustical applications, apply 1/4” (6mm) minimum. bead of sealant to seal perimeter of partition. Apply continuous bead of USG Sheetrock® Brand Acoustical Sealant around all openings and partition intersections. In penetration applications that are not covered in an individual fire rated system, the thickness of the sealant applied within the opening should be no less than 1/4” and no greater than 5/8” flush with the top surface of the floor or sides of the wall
Limitations
1. Not to be applied to moist areas where frost or condensation is present or in direct contact with water. 2. Protect container from freezing and extreme heat. 3. Maintain 55°F (13°C) minimum temperature within the building during and after installation. 4. Product should be stored at a temperature neither below 41°F (5°C) nor exceeding 80°F (26.7°C). 5. Not to be used in applications where the surrounding materials (partitions, floors, penetrations, etc.) will exceed sustained temperatures of 125°F (52°C). 6. Not for use with CPVC or PVC products. 7. For through wall penetration designs where piping is installed either concentrically or eccentrically within a cylindrical sleeve application, the design professional shall specify, at least, 1) A “vented” sleeve that allows egress of moisture from the sleeve module; 2) A spacer, packing material, or backer rod that is compatible, non-reactive, and/or non-conductive between the cylindrical outer sleeve and pipe material. The spacer, packing material, or backer rod shall also serve the function of preventing the pipe material from contacting the outer sleeve material. 8. Consult with manufacturer of adjoining materials for compatibility. 9. Not intended to be painted. Sealant will shrink during curing process. 10. Do not apply USG Sheetrock® Brand Acoustical Sealant in areas where abuse or abrasion of a sealant is likely. 11. There may be discoloration of sealant when in contact with certain types of metal such as copper.
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