Novia 500 Gauge (125 Micron) Virgin Grade Polythene VCL 2.7m x 50m 135m2

Novia 500 is a polythene air-leakage barrier and vapour control layer (VCL) designed for use in wall, roof and floor applications, designed to be installed on the “warm” (interior) side of your walls, roof and floors. Pair with external breather membranes for the “cold” side and secure with Novia tapes for correct installation.

• Translucent virgin grade polythene
• Supplied in centre-folded roll
• 2.7m wide to fit timber frames
• CE Approved and CPR Compliant
• Complies with BS EN 13984
• Improves insulation performance

What is a VCL?

 Vapour Control Layers (VCLs) are designed to manage the passage of moisture through a building's exterior walls, foundations and rooves and limit condensation within the interstitial layer “between” rooves, walls and floors. Particularly in high-humidity areas like the UK, water-laden air can condense on these structures causing damage over the long term, and reducing the thermal performance of insulation. 

It is advised to seal your Vapour Control Layer with double-sided butyl tape, followed by a BOPP tape to improve airtightness and increase the efficacy of the Vapour Control Layer. 

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.

Consider using in conjunction with Novia AirSeal 310 FR Sealant for an airtight seal around joints.

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

For more information on use and specification, please download the data sheet for this product below. 

Data Sheets & Information

• Novia 500 Gauge Polythene VCL Data Sheet