This is a standard 12mm thick PU foam carpet underlay designed to offer extra protection and support for your carpets, maintaining quality for longer. It offers good sound reduction of up to 43dB making your carpets quieter to walk across as well as providing thermal insulation for extra warmth with a TOG rating of 3.3. The bottom line, this underlay will make your carpets feel softer to walk on and prevent you from having to replace them as often! Tip: Use the Wilsons Carpet Underlay Bonding Tape to join the seams of this underlay during installation. Available here at B&Q