Novia 1000 Gauge Vapour Control Layer

For use as an air leak barrier and vapour control layer (AVCL) in insulated wall, roof and floor applications.


A traditional specification, single-ply, non-laminated, virgin-grade blown polythene material. To ensure an airtight seal, install in conjunction with the Novia two-tape sealing system.

Features and Benefits:

  • Air-leakage barrier and vapour control layer (AVCL).
  • Supplied multi-folded in 4 x 25 m.
  • Virgin-grade, high-quality material.
  • CE approved and CPR compliant.
  • Complies with BS EN 13984.
  • Easy to install, can see battens (translucent green tint).
  • Minimizes interstitial condensation.
  • Improves the insulation performance.
  • Low cost solution.
  • Helps buildings to meet BS 5250.
  • Install with Novia two tape sealing system.
  • Ideal for use with Novia breather membranes in insulated frame applications.


  • For professional installation, all Novia® VCL products should be fully sealed to the structure using a Novia® double-sided butyl tape and one of the foil or BOPP lap tapes. The wider the tape used, the stronger the final seal will be and the easier it will be to install.
  • Novia® recommends the 30 mm wide butyl tape and 60 mm metallized BOPP tape for all standard VCL installations.

General information


Smooth polythene (PE)



Translucent Green



Virgin grade polythene



4 x 25 m

Uniclass 2015

Pr_25_57_65_60 Plastics sheetsPrimary


H20/150 Sheet cladding

H30/261 Air and vapour control membrane

H30/30 Air and vapour control membrane

H31/261 Air and vapour control membrane

H31/45 Air and vapour control membrane

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Specification data - Plastics sheets Enhanced data


BS EN 13984.

Performance characteristics


Tensile strength (minimum)

>102 N.

Water vapour resistance (minimum)

>500 MNs/g.

Physical properties




Thickness (minimum)

250/1000 micron/ gauge.

Roll length (minimum)

4 x 25 m.

Product Reference

Novia 1000 Gauge Vapour Control Layer

Nominal weight

230–240 g/m².

Tensile strength MD

>122 N/50mm.

Tensile strength CD

>104 N/50mm.

Moisture vapour permeability

0.31 g/m²/d.

Resistance to water vapour penetration (at 2 kPa)



Novia Double Sided Butyl Tape.

Novia Foil Tape.

Novia Metallised BOPP Tape.

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