Tredaire Contract 9 15sqm PU Foam Carpet Underlay: 6/6 Premium Durability, 5/6 Extra Comfort, 9mm Thick, 2.37 High Tog, 1.37m x 11.00m 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. Contract 9 is a fantastically durable underlay engineered for installations where your carpet is going to be under heavy duress. A 9mm high-density PU foam, Contract 9 is suitable for single-stick & stretch-fit luxury domestic use or double-stick contract use. This PU rebond will ensure your carpet remains protected from wear & also will make it much easier to clean. It offers excellent impact noise suppression of 39d B delivering you a more peaceful environment, & a Tog rating of 2.3, means a warmer one.