![]() Kraft-faced batts are friendliest to handle and easiest to fasten in place (a vapor barrier is not needed for interior walls). Most are the same as R-11 or R-13 insulation batts. They are both excellent at absorbing the sound that would otherwise travel through the air.ĭesigned to fit between studs, acoustic batts are 14 1/2 inches or 22 1/2 inches wide and 3 1/2 inches thick. Major insulation manufacturers, including CertainTeed, Johns Manville, Knauf Fiber Glass, and Owens-Corning, market 3 1/2-inch-thick fiberglass or rock wool batts specifically for this purpose. ![]() This absorbs the sound that would otherwise easily travel through the air pockets between wall framing. Soundproofing Insulationĭuring building or remodeling, an effective and affordable way to improve the soundproofing performance of walls and ceilings is to put batt or blanket insulation between studs or joists. Partition walls in many condos or apartments with double 2-by-4 stud framing typically have STC ratings from 40 to the high 60s, depending upon drywall layers and insulation. In both cases, the higher the rating, the more effective the product.Īs a standard for comparison, a “paper-thin” house interior wall with 2-by-4 studs and 1/2-inch drywall on both sides has an STC of from 15 to 33, depending upon construction and whether it contains fiberglass insulation. The ability of a material to block sound is measured by an Sound Transmission Class (STC) rating, whereas sound absorption is measured by a Noise Reduction Coefficient (NRC) rating or a Sound Absorption Average (SAA). Because they are often applied to surfaces as a finish material, they come in a variety of colors and styles. ![]() Sound absorbing materials are typically porous, lightweight, and soft to the touch-foam panels are a familiar form. Sound absorbing materials and methods keep noise from bouncing around inside a room, improving sound quality in a room. ![]()
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