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What Makes Framing Green?

Posted by Cati O'Keefe

Feb 5, 2014 5:37:00 PM


Image courtesy of: Building Science Corporation and

Know the Lingo:

  • Dimensional Lumber: Wood that has been cut and shaped from a single tree, typically used for framing.
  • Load-Bearing Wall: A wall that helps hold up the house. Interior walls may not be load bearing, but external ones almost always are.
  • Engineered Wood Products (EWP): Structural products made in the factory from industrial wood scrap or fast-growing species, assembled with resins under extreme pressure.
  • Oriented Strand Board (OSB): A type of engineered wood panel. The thickness of OSB used in most SIPs is 7/16”.
  • Fly Ash: Controversial waste by-product from coal-fired power plants. Used as a filler in some—but not all—brands of lightweight concrete blocks.
  • Sound Transmission Class (STC): Refers to how well a wall partition attenuates sound. Products such as ICFs have high STC ratings and greatly reduce noise levels
    inside the home.

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