The Novia VC4000 FR Reflective Vapour Control Layer is a high-performance, flame-resistant, and reflective airtight membrane. It delivers a very low moisture vapour permeability solution due to the use of high-performance materials. The Novia VC4000 is designed to be used as a high-performance vapour control layer and air leakage barrier, this AVCL is suitable for use in an insulated wall or roof application where high moisture vapour resistance is required. This product is tested to EN 13501-1 Fire performance class B-s1,d0 and is valid for substrates with fire class A2-s1,d0 or A1 such as 12mm plasterboard, with no cavity between product and substrate. Key Features Roll Coverage: 75m2 Roll Weight: 13kg Reflectivity: >95% Permeability: Air Tight Minimises interstitial condensation High reflectivity can improve U values EN 13501-1 Fire performance class B-s1,d0 Very low moisture vapour permeability Suitable for use over 18m according to current Building Regulations