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DIY Building Supplies  |  SKU: 504888

AirGuard Control Vapour Control Layer 1.5m x 50m (150m²)

£156.48 Ex VAT
£187.78 Inc VAT
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Delivery: £25 ex VAT
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This AirGuard Vapour Control Layer bu DuPont is designed to control the transfer of moisture between the exterior and interior of a wall structure in building construction. Intended for installation on the “interior” side of the building structure with the logo side facing into the interior of the room. Use to create an airtight seal across wall studs after adding insulation, before applying plasterboard or drylining products. 

  • Supplied in rolls
  • BBA certified for warm and cold roof applications
  • Use in combination with a Breather Membrane
  • Seal with Butyl tape to create an airtight seal

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

Data Sheets & Information

  • Size
    1.5m x 50m
  • Coverage (m²)
    150
  • Thickness
    108gsm
  • Length
    50m
  • Width
    1.5m
  • Material
    Polypropylene
  • Water Resistance
    2,04E-7 kg/(m² s)
  • Reaction to Fire
    E Class
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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