Acoustiblok is a mass-loaded vinyl, sound isolation product. It is an extremely dense but very flexible material that comes in two sizes; 16oz. and 32oz.

• Sixteen-ounce Acoustiblok is 1/8" thick and weighs 1 lb/ft².
• Thirty-two ounce of Acoustiblok are 1/4" thick and weigh 2 lb/ft².
• Barium Free
• Color: Black
• High UV Resistance
• No Fungal or Algal Growth

The ability of a partition to block the transmission of airborne sound is typically described by a single number rating of the Sound Transmission Class (STC).

• Sixteen-ounce Acoustiblok material has an STC of 26.
• Thirty-two ounce Acoustiblok material has an STC of 32.
• Adding one layer of Acoustiblok to a standard metal stud gypsum board interior wall increases its STC to 53.
• Double steel stud partition walls, faced with single layers of drywall and containing fiber-glass insulation and Acoustiblok, can achieve an STC of 66.

STC is calculated using a range of frequencies similar to the human voice; attenuation in higher and lower ranges should be estimated from the Sound Transmission Loss graphs provided with standard STC reports.^[1]

Test procedures and the formula for calculation of STC values are defined in ASTM Standards E90-02 and E413-87.

New Construction, Remodel/Renovation

Acoustiblok material is typically installed in partition walls and floor/ceiling assemblies when they are stripped to the studs.

Acoustiblok is qualified for use in commercial and institutional construction by its UL Classification file,^[2] found under^[3] Fire Tests of Building Construction and Materials. This Classification includes use in wall designs of the U300, U400, and V400 series and floor-ceiling constructions of the L500 series, as specified in ANSI/UL 263 Fire Resistance Ratings.^[4] Ratings of 1 and 2 hours can be obtained, depending on the specific partition design.