Offical Website for Sound Shark Rubber Floor Underlayment

Sound Shark
by Sound Seal is a rubber based floor underlayment made from recycled rubber tires.  Sound Shark is used under floated or glued down laminate or engineered hardwood flooring.  Sound Shark is excellent for use in lightweight wood frame construction due to its weight & mass. Sound Shark is readily available in stock thickness of 3mm, 6mm and 12 mm with custom thickness from 1mm to 17mm.

Rubber based floor Underlayment for floated or glue down
laminate & engineered hardwood flooring
Made from recycled rubber tires
Available in 4' x 25' and  4' x 50' rolls
Standard in stock thickness, 3 mm, 6 mm 12 mm
Other thickness available, 2mm, 4mm, 5mm, 8mm
Excellent for wood sub flooring, will add STC due to
weight & mass
6 mm or 1/4" weighs 1 lb per sq ft
12 mm or 1/2" weighs 2 lbs per sq ft

92% Recycled Content


New Acoustical Testing
3mm rubber double glue down - LM Flooring Eng. Hardwood Flooring - Sika T-35 Adhesive

Acoustical IIC Rating
6" Concrete Slab Δ IIC 19
6" Concrete w/ ceiling below IIC 60
Wood Frame Construction IIC 57