Vapor retarder

Vapor retarder
  A material that retards the movement of water vapor through a building element (walls, ceilings) and prevents insulation and structural wood from becoming damp and metals from corroding. Often applied to insulation batts or separately in the form of treated papers, plastic sheets, and metallic foils.
  U.S. Dept. of Energy, Energy Information Administration's Energy Glossary

Energy terms . 2014.

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  • vapor retarder — noun A layer of material or a laminate used to appreciably reduce the flow of water vapor into a roof assembly. Syn: vapor barrier …   Wiktionary

  • Vapor Retarder —   A material that retards the movement of water vapor through a building element (walls, ceilings) and prevents insulation and structural wood from becoming damp and metals from corroding. Often applied to insulation batts or separately in the… …   Energy terms

  • Vapor barrier — 6 mil Polyethylene plastic sheet as vapor barrier between insulation and gypsum board …   Wikipedia

  • Building insulation materials — A selection of insulation materials can aid in building insulation. All of these are based on standard principles of thermal insulation. Materials used to reduce heat transfer by conduction, radiation or convection are employed in varying… …   Wikipedia

  • roof assembly — noun an assembly of interacting roof components including the roof deck, vapor retarder (if needed), insulation and roof covering …   Wiktionary

  • Polyethylene —   A registered trademark for plastic sheeting material that can be used as a vapor retarder. This plastic is used to make grocery bags. It is a long chain of carbon atoms with 2 hydrogen atoms attached to each carbon atom …   Energy terms

  • паровой ингибитор — — [А.С.Гольдберг. Англо русский энергетический словарь. 2006 г.] Тематики энергетика в целом EN vapor retarder …   Справочник технического переводчика

  • Cellulose insulation — The word cellulose comes from the French word for a living cellule and glucose, which is sugar. Insulation is low thermal conductivity material used to separate the internal climate and sounds of a building from external climate and sounds.… …   Wikipedia

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  • Maladie d'Alzheimer — Classification et ressources externes Comparaison d un cerveau normal âgé (gauche) et du cerveau d un patient atteint d une maladie d Alzheimer (droite). CIM …   Wikipédia en Français

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