The Roberts 70-193 Super Felt Premium Underlayment is a 4mm thick insulating underlayment made to reduce noise and help cushion flooring. By absorbing noise instead of deflecting it, Super Felt provides a deep, rich sound. This felt underlayment is made from recycled fibers and compressed using a high heat manufacturing process. The film overlay protects engineered and laminate flooring from any moisture from the subfloor and includes an adhesive strip and 1-3/4-Inch overlap for linking multiple rolls.