Whilst Tredaire Brio underlay provides a sound reduction of 32db, there are other underlays that give greater noise reduction; these underlays include Tredaire Soft Walk at 39dB and Tredaire Colours Red at 46db reduction.

Tredaire Brio underlay is classified for domestic use but is not suitable for commercial use, this means that you can put it anywhere in the home and it will work.

You must not lay this underlay where under floor heating is used.

 
The underlay is made up of recycled foam so it has the green factor.
The carpet underlay is guaranteed for 15 years, so should last as long as the carpet.
The carpet underlay passes all relevant BS standards.

Now for the technical stuff:

Manufacture: Interfloor
Country of Manufacture: UK
Product Description: High quality polyurethane rebond carpet underlay
Acoustic Properties: 32dB
Thermal Properties: 2.18 tog
Flammability – Low radius of effect of ignition – BS4790 &BS 5287
Any further data is available by download on the details page (Product Data Sheet)