SheetBlok Sound Isolation Barrier is a dense limp-mass vinyl material that is about 6dB more effective than solid lead at stopping the transmission of sound. It acts as a thin dense sound barrier layer in walls ceilings or floors and is most effective when used as one component of a multi-layered construction scheme. SheetBlok helps in decoupling (i. e. floating) floors and walls and while it s not normally considered a finish product per se it is paintable with latex paint. Specs: Size: 4 x30 rolls (120 sq. ft. ) Color: Black (smooth on one side; has a pebble grain finish on the other) STC: 27 Thickness: 1/8 Weight: ±1#/sq. ft. Service Temperature: -40Á to 180Á F Tensile Strength: 400 psi Tear Strength: 70#/inch Flammability: Rated UL94 S. E. 0; Passes test MVSS-302 ⚠️Warning: This Product can expose you to chemicals including DEHP which is known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.