Novia 500G Vapour Control Layer

Our lightweight and easy to install polythene VCL

Product Overview

Novia 500 VCL is a low-cost, blown polythene material, suitable for use as a vapour control layer within the walls of timber frame constructions, or where control of the passage of water vapour is required.

This product also performs the additional function of an air-leakage barrier, to prevent losses due to unwanted convection flows. We advise the use of Novia double sided butyl and metallised BOPP tape to ensure a complete barrier integrity throughout the entire life of the product. Novia 500 VCL should be used in combination with Novia breather membranes to provide an air-tight and vapour resistant system.

Novia 500 VCL is fully CPR compliant and is CE Approved to EN 13984:2013.

Novia 500 VCL is available on NBS Plus. Full specificaon details are below.

Key Features

  • Virgin grade polythene
  • Lightweight cost-effective solution
  • Translucent green tint - see-through for accurate installations
  • 500 gauge / 125 micron thickness
  • Roll size 2.7m x 50m (135m2)
  • CE approved product

Installation Tips

Installation guidelines can be found on the product datasheets using the links to the left.

To install the membranes, we recommend using the Novia double tape system.

Our Double Sided Butyl Tape is used on the laps and edges of the membrane, with either Metallised BOPP Tape or Aluminium Foil Tape then used to complete the seal, keeping down any excess membrane which may get caught in the wind.


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