Tredaire Dreamwalk 15sqm PU Foam Carpet Underlay: 5/6 Extra Durability, 6/6 Premium Comfort, 11mm Thick, 3.13 Ultra High Tog, 1.37m x 11.00m Roll Suitable for stretch-fit installation of carpets. Perfect for lounge, dining room & main bedrooms. Dreamwalk underlay is an 11.00mm thick premium PU carpet underlay from Tredaire's Seventh Heaven range. This PU foam carpet underlay provides superb comfort & carpet protection around the home. Its thickness & density make it ideal for anyone seeking an acoustic floor solution. Outstanding heat & sound insulation capabilities. For those seeking a high performance acoustic underlay Dreamwalk has an excellent noise suppression rating of 44d B. Only 19.1kg per roll.