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Novia  |  SKU: NV009

Novia VC4000 FR Reflective Air Leakage & Vapour Control Layer 1.5m x 50m 75m2

£215.00 Ex VAT
£258.00 Inc VAT
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Delivery: £40 ex VAT

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Novia VC400 Reflective is a flame resistant, reflective and airtight Vapour Control Membrane (VCL) designed for use in wall or roof applications requiring high moisture vapour resistance and low moisture vapour permeability.

Features flame-resistant additives that mean the membrane will not readily ignite, with a high reflectivity and low emissivity surface. Install on the “warm” (interior) side of your structure and pair with external breather membranes for the “cold” side. Secure with Novia tapes for a secure finish.


Suitable for applications which require EN 13501-1 Fire Classification Class B-s1, d0* fire approval (Valid for substrates with fire class A2-s1,d0 or A1 such as 12mm plasterboard, with no cavity between product and substrate. Product tested to EN 13501-1)

  • Supplied unfolded, in rolls
  • Can deliver improved U values when properly applied
  • 1.5m wide
  • UKCA Approved
  • Complies with BS EN 13984 
  • Improves insulation performance
Length:  50m Roll
Width:  1.5m
Coverage: 75m2
Moisture Vapour Permeability in Sd: 4000m
Reaction to Fire B-s1, d0* Class
Reflectivity 98%

 * Valid for substrates with fire class A2-s1, d0 or A1 such as 12mm plasterboard, with no cavity between product and substrate. Product tested to EN 13501-1

Data Sheets & Information

  • Size
    1.5m x 50m
  • Coverage (m²)
    75
  • Length
    50m
  • Width
    1.5m
Need Help? Call our Team on 0115 6976 800
What is a Vapour Control Layer (VCL)

A vapour control layer (VCL), also known as a vapour barrier, is a material used in building construction to prevent the passage of water vapour through walls, ceilings, floors, or roofs. It is typically installed on the “warm” side of the insulation (typically the interior side) where it helps to control moisture levels within the building envelope. By blocking the movement of water vapour, a VCL helps to prevent condensation from occurring within the building structure, which can lead to issues such as mould growth, rot, and reduced insulation effectiveness.

How do I Apply a Vapour Control Layer?

A vapour control layer should be applied on the interior side of any wall, roof or flooring, over timber studs before the internal lining. It should be 100% sealed to the structure with double-sided butyl tapes, pre-applied to all areas where a fixing is to be made, and finished with metallised BOPP tapes to ensure a complete vapour seal.

It is best used in conjunction with a Breather Membrane applied to the exterior side of the structure.

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