Roofing Membrane, Roof Underlay, Wind Barrier, and Rain Protection, 150g Roll 1.5 x 50m = 75m², Crys-X

Universal Roof Felt and Wall Membrane for Both Wind and Rain Protection

The best membrane on the market for insulating roofs and walls! Installed on the exterior of insulation in outer wall constructions and roofs to prevent wind and moisture from penetrating the wall's or roof's insulation.

• Releases moisture out but not in – 3000 g/m²/24h
• Windproof – the wind barrier is highly diffusion-open, ensuring that any moisture inside the wall can escape, preventing condensation and the risk of moisture problems
• Rainproof – highest water-resistance class for wind barriers, W1, serves as temporary weather protection during construction (in combination with sealing tape)
• Good elasticity – absorbs normal substrate movements without cracking
• Highly stretch-resistant – 260 N/50mm
• Three layers, grammage 150 g/m², SD = 0.02 m
• Thickness: 0.3 mm

Suitable Applications:

• Used as a first layer for sloped roofs, insulated and ventilated, even with solid wood panels

• Especially suitable for roofs with lower slopes

• Ideal for roof and attic renovations using "reverse technology"

• The product does not require a ventilation gap between the membrane and thermal insulation (mineral wool, glass wool, etc.), allowing the membrane to be placed directly against the insulation

• Final installation of roof covering on the membrane should always be done using battens and counter battens

• Suitable for use under almost all types of roofing materials, especially ceramic tiles, concrete tiles, metal roofs, and natural stone

• Also excellent as an exterior wind barrier and wall membrane, as it blocks wind and moisture while allowing moisture to escape