Tredaire Colours Red 11sqm Sponge Rubber Carpet Underlay: 3/6 General Durability, 6/6 Premium Comfort, 11.4mm Thick, 1.65 Tog, 135lb, 1.33m x 8.24m Roll Suitable for stretch-fit installation of carpets. Perfect for lounge, dining room & main bedrooms. The best carpet underlay that money can buy. This 11.40mm high density textured flat, Tredaire sponge rubber thick underlay provides unparalleled levels of sumptuous comfort & excellent protection to support your carpet throughout its lifetime. A sponge with outstanding heat & sound insulation capabilities. The perfect product for those seeking a soundproof underlay. An 11.4mm ideal for all living rooms.