We stock a number of VCL kits, barrier membranes and VCL tape so you can ensure your home remains watertight. Our vapour control layers are priced competitively, with budget-friendly options available alongside more expensive vapour barriers.

Passive Purple is the Intelligent Membrane that provides airtightness, vapour control, radon barrier and is even fire proof to Fire Class C – SL, d0 (internal edition) and Fire Class B – S1, d0 (external, retrofit and X edition).

We offer liquid membranes from our five-star protection of windows and surfaces using biodegradable natural latex, liquid waterproofing membranes that prevents the passage of water and other liquids through a building membrane, to our …

VCL membranes work by preventing water from condensing and forming surface water. Typically installed on the warm side of the insulation, the VCL blocks warm, moist air from entering the roof space. When used in conjunction with good ventilation and the installation of an exterior breather membrane, moisture particles are free to escape from ...

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A intelligent vapour control layer (VCL), is a plastic layer that restricts the movement of warm, moist air from the property internally to the fabric of the building. VCL effectively prevents moisture from entering a wall cavity and prevents harmful condensation also.

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.

The Vapour Control Layer (VCL) needs to effectively manage the passage of water vapour through the building envelope, comply with EN 13984 and be specified in accordance with BS 5250: Code of Practice for Control of Condensation. Sarnavap vapour control layers can meet with both these requirements.

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 · 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).