Membrane

A high-performance, vapor-permeable roofing underlayment engineered to provide superior protection against wind-driven rain, snow, and dust while allowing trapped moisture within the roof structure to escape. Designed for use beneath metal, tile, or shingle roofing systems, it ensures long-term durability and condensation control. The multi-layer structure typically combines a non-woven polypropylene outer layer for mechanical strength, a microporous functional film for vapor diffusion, and an inner layer for additional tear resistance. The result is a lightweight yet robust membrane that enhances the roof’s energy efficiency, prevents mold growth, and prolongs the lifespan of insulation and wooden components. It can be installed directly over rafters or sheathing, offering quick handling, excellent UV stability, and easy cutting for precise fitting in complex roof geometries.

Technical Summary:
  • Weight: 135 g/m²
  • Water Resistance: Class W1 (EN 13859-1)
  • Vapor Permeability (Sd): 2000 mm (g/m² per 24h)
  • Tensile Strength: 290 N/50 mm
  • Temperature Range: –40 °C to +95 °C
  • UV Resistance: 4 months exposed
  • Roll Size: 4’11” × 164’ (1.5 m × 50 m )