Dimensions: Length 8 m Width 100 cm Thickness 2.0 mm +/- 0.3 mm Density: 780 kg/m³ +/- 20 kg Material: PU/Mineral Footfall Sound: 26 % Impact Sound: 18 dB Thermal-Resistance: 0.01 m²K/W Compressive Strength: >100 kPa (10 to/m²) Hi-Tech Underlay Rayprotect Insulation film for electro-magnetic ray absorption, through a special absorbtion layer