This Powerlon Air and Vapour Control Layer (AVCL) is a polyethylene-based vapour control membrane reinforced with a scrim to offer sufficient tensile strength in roof and wall installations. Its air barrier ensures that the building envelope is suitably sealed to control ventilation and prevent heat loss in compliance with Building Regulations Part L.
Fitted on the warm side of the insulation, this AVCL protects insulates from interstitial condensation and as an impermeable air barrier, it also improves your building’s airtightness.
Features & Benefits: Powerlon VCL 250 Air and Vapour Control Layer – 2m x 50m
- VCL and air barrier
- Air barrier for controlling ventilation
- Controls vapour to minimise interstitial condensation
- Reinforced polyethylene with high tensile scrim reinforcement
- Suitable for roof, wall and floor installations
- 285gsm grade
Easy to install, this lightweight, high-performance membrane delivers a cost-effective vapour control system for the building envelope.






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