Vapor barrier

(redirected from Vapour barrier)

vapor barrier

[′vā·pər ‚bar·ē·ər]
(civil engineering)
A layer of material applied to the inner (warm) surface of a concrete wall or floor to prevent absorption and condensation of moisture.

Vapor barrier

Airtight skin of polyethylene of aluminum that prevents moisture from warm damp air in a building from passing into a colder space, causing condensation.

vapor barrier

vapor barrier
SeeVapor retarder.
References in periodicals archive ?
Finland-based Walki Group's new flame-retardant membrane, Walki Wall Tight FR G A2, is a unique vapour barrier that ensures fire safety for construction assets and people in case of rescue or evacuation operations.
Tenders are invited for Supply of "Vapour Barrier Coating" for yard no.
It can measure the permeability of anything from a coating of paint to a building board or vapour barrier or from an entire wall structure to a roofing or flooring system.
Offering a moisture and water vapour barrier on the paper - a function that so far has only been reached by waxing or PE coating - the new grade is perfectly suited for various food wrap applications in direct contact with warm food products, such as hamburgers and sandwiches.
Solvay says Diofan and Ixan high barrier polymers have both oxygen and water vapour barrier properties.
You need the right kind and size of insulation and a vapour barrier that lets enough air flow between the insulation and the roof.
Panels also contain a vapour barrier layer and the cardboard pulp was chemically treated to counteract its hydroscopic (sponge-like) properties.
I purchased a 330-metre roll of the thickest vapour barrier I could buy for a double use.
Hydrablock can also be used as a vapour barrier during welding.
View-Barrier has a water vapour barrier, achieving a transmission rate of up to [10.sup.-4] g/[m.sup.2]/day--Techbarrier achieves typically [10.sup.-1] to [10.sup.-2] g/[m.sup.2]/ day--allowing for flexible, roll-to-roll production of plastic electronics.
The masonry walls are lined with heavy concrete blocks and separated from the rest of the building by a vapour barrier, so minimizing changes in temperature and humidity.
A barrier film claimed to have "the world's highest level of water vapour barrier properties" is being introduced to Europe.