10m² roll of 3mm high quality, physically cross-linked polyolefin foam underlay. Ideally suited to heavy domestic applications. Provides a vapour barrier when used with waterproof jointing tape and laid in accordance with fitting instructions. Suitable for use with sub-floor embedded, and surface underfloor heating (operating temperature -50 to 100°C). Always read and follow the guidelines supplied with the underfloor heating system and/or floor to be fitted. Acoustalay should be used as an insulating/spot levelling layer between the floor to be laid and the sub-floor. • Widely Suitable for use with Underfloor Heating • Mould & Mildew-Resistant • 10 Year Protection • Spot Levelling (min. 2.7mm), Prevents Rocking & Sound Bridges • Joint Protection Less Than 0.5mm Deflection Under Load • Includes Vapour Barrier • Made in the UK • Excellent Transmitted Sound Reduction: 22dB