Permavent Envirotect XT150 Reflect Walling Membrane

Spunbond non-woven polypropylene with a high purity aluminium surface (R-value 0.79 when facing >20 mm still airspace) designed and developed for use in timber frame, light steel gauge, modular building and leisure building applications.

Delivers first line protection to the external of the building during construction against driving rain, and wind-blown snow providing ultimate protection to the exterior of the building.

The high-water vapour permeability provided ensures water vapour can pass through the structure safely into a cavity. The ultra-low emissivity surface enhances the thermal performance of the airspace significantly improving the overall thermal performance of the wall construction when facing a still air cavity.

Features and benefits:

• Effective condensation control and airtightness within walling construction.
• Flexible and easy to install.
• High-purity aluminium surface – enhanced thermal performance.
• Greatly exceeds the requirements of the updated guidance in building regulations Approved Document Part L.
• Meet and exceeds waterproofing requirements in BS EN 13589–2:2014 (W2).
• Prevents water ingress to the structure.
• Provides comprehensive waterproofing barrier to the sheathing during construction phase.
• Tgree standard roll sizes.
• Can be combined with Envirotect AVCLs.
• Non-reflective version also (Envirotect XT150 wall membrane; specified separately).