Timbertech Elite Underlay is a silver vapour barrier film and backing fleece for laminate, engineered, and solid wood flooring. This underlay is suitable for both domestic and contract installations. TimberTech2 Silver Plus 3mm Underlay features a built-in silver foil moisture membrane (DPM) to prevent moisture rising from the subfloor, making it ideal for installing laminate and wood floors on concrete or wood subfloors. At 3mm thick, it helps level out subfloor imperfections and offers excellent sound reduction of 21dB. This underlay is compatible with underfloor heating, as its low tog rating of 0.37 allows for more efficient heating. It is suitable for underfloor heating, but not recommended for electric mat (or dry) underfloor heating systems.