Dekormans Underlayment, designed to sit beneath floating laminate, bamboo, and engineered wood floors, is suitable for a variety of subfloor types. This underlayment features a 2 mm thick foam layer, ensuring optimal padding and noise reduction. Its closed cell foam construction provides superior resistance to moisture vapor. Additionally, it enhances the comfort level of your flooring systems. IIC (Impact Sound Transmission Test) rating 44; STC (Sound Transmission Class) 48;Sound Transmission Loss Test 20