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  • Also known as vapor closed, a vapor barrier is a material that has a permeance of 0.1 US perm or less. A vapor barrier is a material that is essentially vapor impermeable (e.g., metal, glass, thick plastics, unperforated epoxy paint). A vapor barrier is a Class I vapor control layer. The test(...)
  • 1. A non-loadbearing layer of masonry on the exterior of an enclosure. 2. A thin slice or sheet of wood or other material that is glued onto a base of wood, fibreboard, or other material to create a flat panel (furniture, counter tops, etc.).  
  • Wall cladding separated from the framed wall by an air cavity, allowing for ventilation. Source: www.buildingscience.com
  • In terms of indoor air quality, a VOC is any organic chemical compound that can evaporate under normal indoor atmospheric conditions of temperature and pressure. VOCs may have short- and long-term adverse health effects. VOCs are emitted by a wide array of products including many building(...)