Many of our Acoustic Insulation underlays have excellent impact sound reduction values, which when applicable we express this as a dB (Decibel) rating.
The higher the star rating, the better the acoustic properties of the underlay. E.g. 5 star - very good. 1 star - Poor.
Tredaire Colours Red which is a high-quality sponge rubber underlay from Interfloor has a rating of 46dB and offers excellent sound reduction.
Our Envirolay range of Felt underlays which is made here in the Texfelt factory also has excellent sound reduction qualities with a rating of 35dB.