EcoTouch® Sound Attenuation Batts (SABs) are unfaced, lightweight, fl exible fi berglass insulation batts, designed to deliver noise control in metal stud wall cavities of interior partitions. Manufactured to fi t metal framing, they come in 2½" and 3½" thicknesses, with lengths of 8.'

Design Considerations Acoustical performance of metal stud interior partitions can be substantially affected by a number of important design and construction details.

Details

• Seal the bottom plate and any wall penetrations with non-hardening permanently resilient sealant.
• Location and attachment of outlets, ducts and mechanical equipment. Plumbing should be designed to allow for expansion and contraction. Pipes should also be isolated from structure using resilient mounts.
• Use solid core wood or metal doors for best noise control. Depending on HVAC requirements, weather-stripping may be used around the door to reduce sound transmission.

Attributes

• Excellent Acoustical Performance - Sound Attenuation Batts provide excellent acoustical performance for metal framed interior partitions. Depending on the construction method and components used, SABs can improve STC (Sound Transmission Class) ratings by 4-10 points over an empty cavity.
• Easy to Install and Fabricate - Sound Attenuation Batts are 1/8" wider than stud spacing for easy friction-fit installation. No adhesives or fasteners are required. Supplementary support should be provided when the SABs do not fill the cavity or if one side of the cavity is left open and the partition is 8' or higher. SABs are easily cut to fit around wires, outlets, junction boxes, pipes and other obstructions. Friction fit installation and easy fabrication, improves installation speed and workmanship. Acoustic performance of a wall assembly can be affected by workmanship and attention to detail while constructing a wall.
• Reality of Sound Transmission Class (STC) - STC is a method of rating airborne sound transmission performance of a wall or floor assembly. It is intended as a quick screening tool to compare different wall or floor assemblies. STC ratings are determined in a laboratory under controlled conditions. Even then, differences of 1-2 points STC can occur for the same assembly in the same laboratory. In the field, flanking noise, quality of material and construction practices can lead to widely varied STCs for the same assembly. Typically a two (2) or more point change in STC is necessary to notice an audible difference.