Diffusion-open, weldable roofing underlay membrane


  • Reliable seam tightness: homogeneously weldable
  • High degree of occupational safety: non-slip and abrasion-resistant surface
  • Suitable as a roofing underlay to meet the most stringent requirements
  • Maximum protection: diffusion-open, rainproof against driving rain, and highest hail-resistance HR 5 (Swiss VKF/AEAI directive) and as per EN 13583
  • Easy to work with: robust with extremely high tear-resistance
  • Also keeps structural elements dry during the construction phase: excellent protection against driving rain thanks to monolithic membrane

Areas of application

For use as a 3-ply diffusion-open, homogeneously weldable, rainproof/watertight roofing underlay membrane. Suitable for installation on pressure-resistant subsurfaces, e.g. timber sheathing, wood-based panels and wood-fibre underlay panels.

Delivery form

Art. no. GTIN Length Width Contents Weight Sales unit Container Declaration of performance
1AR03191 4026639231918 50 m 1.5 m 75 m² 29 kg 1 20  DoP
1AR03194 4026639231949 25 m 3 m 75 m² 29 kg 1 20  DoP
1AR03197 4026639231970 400 m 3 m 1200 m² 0.34 kg 1 1  DoP
1: Profi-VE nicht im Anbruch lieferbar