The Regupol 7210C Acoustic Resilient Layer is used under all types of floor screeds in new build apartments and is aimed at constructions where Pre-Completion Testing is preferred to that of a Robust Detail. Regupol 7210C Acoustic Resilient Layer is an under-screed product designed to isolate screeds from the main structure of the building reducing impact energy generated by general footfall. What are the benefits of the 4515 Eco Soundproofing Underlay? Its been independently tested by a UKAS accredited laboratory to show compliance with the new building regulations in accordance with Approved Document E 2003.Offers long term performance without collapse or bottoming out under highpoint loads. Resistant to ageing and deformation. Quick and easy to install. Simply bond to the subfloor beneath the final floor finish. Reduces construction heights. High quality and exact material thickness guaranteed. Suitable for use with under floor heating. Very comfortable under foot. Zero Global Warming Potential and Zero Ozone Depletion Potential. Technical Density: Approx. 470kg/m3Tensile strength: Approx. 0.6M/mm2Elongation at break: Approx. 18%Temperature resistance: -40 to 110oCThermal conductivity: Approx. 0.085W/mkImpact sound insulation: 17dBSheet width: 1150mmSheet length: 2.25m Thickness: 5mmMaterial construction: Rubber/cork