Air Retarder/Barrier
  A material or structural element that inhibits air flow into and out of a building's envelope or shell. This is a continuous sheet composed of polyethylene, polypropylene, or extruded polystyrene. The sheet is wrapped around the outside of a house during construction to reduce air in-and exfiltration, yet allow water to easily diffuse through it.

Energy terms . 2014.

Look at other dictionaries:

  • 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

  • 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

  • microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …   Universalium

  • Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations …   Wikipedia

  • Organisation défensive du Royaume-Uni pendant la Seconde Guerre mondiale — Gros plan sur l embrasure d un emplacement de tir abrité. L organisation défensive du Royaume Uni durant la Seconde Guerre mondiale a entraîné une mobilisation des militaires et des civils sur une très grande échelle en réponse à la menace d… …   Wikipédia en Français

  • Volvo FE — Infobox Automobile name = Volvo FE manufacturer = Volvo Trucks Corporation parent company = Volvo AB aka = production = assembly = predecessor = FL7 successor = class = Medium body style = COE layout = platform = engine = D7E transmission =… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”