Duralay System 10 11sqm Crumb Rubber Carpet Underlay: 6/6 Premium Durability, 5/6 Extra Comfort, 9.2mm Thick, 1.55 Tog, 135lb, 1.37m x 8.00m Roll Suitable for stretch-fit, single-stick & double-stick installation of carpets. Single-stick & double-stick installation is recommended where there is a possibility of rucking, for instance if mobility scooters drive over the carpet. Especially recommended for hall, stairs, landing, lounge & dining rooms. Duralay crumb rubber underlays are the hardest wearing that money can buy! Made from recycled car tyres they're as tough as they come & offer an unbeatable 100% recovery rating (BS5808) minimising indentations from heavy furniture. This durable 9.20mm heavyweight, ultra high density, crumb rubber underlay can be used anywhere in the home & can be fitted by traditional stretch fitting or can be single or double stuck. Ideal for halls, dining rooms & staircases.