A SOUND INSULATION SYSTEM FOR CONCRETE FLOORS, ROBUST RESILIENT UNDER SCREED LAYER SYSTEM. Suitable for precast and solid concrete floors (minimum weight 300kg/m2) Convenient: Minimal change to traditional floor and ceiling construction Resilient: JCW Screed Foam is an economic underscreed material designed for the real building sites. Acoustic Testing & Compliance JCW Impacta Rubber has been site tested for the new 2003 requirements: complies with RSD performance targets. Accepted by NHBC for A.D.E. compliance. For more information on this product call us today on 01204 548400.