A Vapour Control Layer, or VCL for short, is a plastic layer that restricts the movement of warm, moist air from inside a property into the fabric of the building. VCLs prevent excess moisture entering a wall’s cavity, behind the insulation.

2022年4月3日 · What is the purpose of a Vapour Control Layer (VCL)? When condensation occurs within a property’s structure, it may cause significant issues that are costly to rectify. VCLs play a key role in limiting the passage of moisture-rich …

5 天之前 · Wall installation for vapour control layers Generally speaking when you install a VCL to the walls of existing properties, you are installing a stud wall with insulation. If you use permeable insulation material such as sheep's wool, rockwool or fibreglass, the VCL is installed to the warm side of the insulation.

A Vapour Control Layer (VCL) is a super-thin material, often made of thermoplastic polymer foil sheet, used throughout construction projects designed to stop water vapour from seeping into walls, ceilings, or floors when it's cold outside. It's typically placed between the plasterboard and framework, to keep buildings dry.

2022年4月3日 · A 'vapour control layer', or 'VCL', reduces the water vapour transfer through any building and reduces the risk of condensation forming. This is done by installing it on the inner side of the insulation – for example, in a pitched roof, this would sit beneath the layer of insulation that has been installed between the rafters.

2019年2月19日 · This is known as a vapour control layer (VCL) or a vapour retarder. A VCL is always used as close to the inner face of a wall as possible and reduces the amount of moisture passing through the layer to low levels, ensuring only insignificant amounts of condensation occur within the structure.

What is a VCL? A VCL is a membrane used throughout construction projects and it is designed to protect building elements from degradation by restricting the movement of water vapour from inside a building to within the building structure (interstitial condensation). A VCL therefore helps prevent interstitial condensation.

2023年5月31日 · What is a VCL? A VCL is a membrane used throughout construction projects and it is designed to protect building elements from degradation by restricting the movement of water vapour from inside a building to within the building structure (interstitial condensation). A VCL therefore helps prevent interstitial condensation.

Vapour Control Layers (VCLs) are materials specifically designed to limit the amount of moisture vapor that diffuses into the building envelope, thereby reducing the risk of condensation within the structure.

The VCL can be lapped directly to the subfloor, tied into a VCL along the ceiling or to the airtight layer between floors in multi-storey dwellings. If in doubt, please send