A robust acoustic underlay matting material designed to attenuate impact sound at source. Impacta 4551 Mat is a concrete floor soft covering mat, suitable for all floor finishes including ceramic tiles, vinyl, wood and laminates, carpet and marmoleum. PropertiesLength: 20m. Width: 1.05m. Roll size: 21m2. Weight: 44.5kg per roll. Thickness: 3mm.Rolls per pallet: 20x rolls. Features Universal - JCW Impacta 4551 Mat can be bonded to all types of base floors. Tested - following extensive testing, JCW Impacta Adhesive is recommended to bond the product to the base floor. Acoustic testing & compliance JCW Impacta 4551 Mat has been accepted by NHBC for ADE compliance.