Duralay Treadmore 11sqm Crumb Rubber Carpet Underlay: 6/6 Premium Durability, 4/6 luxury Comfort, 7.95mm Thick, 1.03 Tog, 100lb, 1.37m x 8.00m Roll Suitable for stretch-fit installation of carpets. Ideal for lounge, dining rooms & staircases. Treadmore underlay is made from recycled car tyres & offers an unbeatable 100% recovery rating (BS5808) minimising indentations from heavy furniture. This 7.95mm heavyweight, ultra high density, crumb rubber underlay can be used anywhere in the home. Durable & hard-wearing, Treadmore is ideal for dining rooms & staircases.