The Trojan Foil Back Underlay enhances thermal efficiency and provides a vapor barrier, making it ideal for use under laminate and engineered wood flooring. It significantly reduces noise from wooden and laminate flooring. The underlay is available in a roll size of 2mm x 1m x 10m, covering an area of 10m2. It has a tog rating of 0.8 and an impact sound reduction of 23dB. The underlay is not suitable for use with underfloor heating. It has a good compressive strength and a heat transfer resistance of 0.080k/W m2. The underlay is available in grey colour.