Roofing membrane with high, even vapor permeability, thanks to which it keeps the roof dry, which translates into a reduction of energy consumption in buildings. Used as a layer of initial covering under roofing, on sloping roofs. Prevents rainfall from getting into the thermal insulation and roof structure, and also protects against condensation that forms under the base covers. It is characterized by high flexibility and water resistance. Has a high surface weight. It is "Energetic" due to its very good vapor permeability despite the high basis weight.

Technical data

• material: polypropylene (3 layers)
• black colour
• basis weight 165 g / m ² (+/- 20)
• Sd (r diffusion-equivalent air layer) 0.015 m (+ 0.02 / -0.01)
• breaking strength: along 350 N / 5 cm (+ 60 / -80); across 240 N / 5 cm (+ 60 / -80)
• elongation at break: along 70% (+/- 40); across 90% (+/- 40)
• tear strength on the nail: along 230 N (+/- 80); across 300 N (+/- 90)
• water column resistance 1 m
• 1.6 m wide
• length 50 m
• flammability class E
• high resistance to UV radiation
• high mechanical strength