Sheets with a bitumen and special polymer-based elasto-plastomeric membrane with polyester reinforcement sandwiched to a layer of resilient polyester fibre coated with blue, non-woven polypropylene fabric with a 5 cm wide self-adhesive border along the sides. TECHNICAL DATA: Tensile strength: – longitudinal: 700 N/50 mm. – transversal: 500 N/50 mm. Impact strength: 900 mm. Resistance to static perforation: 15 kg. Impermeability to water: > 100 KPa. Reaction to fire: F. Apparent dynamic stiffness (S’t): 15 MN/m³. Dynamic stiffness for calculation purposes (S’): 47 MN/m³. Reduction of noise from footsteps when installed (∆Lw): 37 dB. Reduction of noise caused by footsteps under laboratory conditions (∆Lw(*)): 21 dB. Thermal resistance (R): 0.145 m²K/W. Nominal thickness: 8 mm. Format: 10 x 1 m rolls with a 5 cm border along the sides. Weight: 1.8 kg/m². Packaging: pallets containing 160 m². (*) Measured in an independent laboratory on a 14 cm thick normalised reinforced concrete floor with a surface area of 10 m² and an upper acoustic chamber (according to EN ISO 140-8).