damp course

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damp course (plural damp courses)

  1. (construction) A layer in a wall, foundation etc. which prevents moisture spreading into interior areas.
    • 1985, Peter Carey, Illywhacker, Faber and Faber, published 2003, page 532:
      He knew why the building was so damp. Its damp courses were defective and it was built on top of the tank stream.
    • 2001 June 20, Anna Tims, The Guardian:
      Sincerest apologies from Everest, which admits that a damp course was, by an extraordinary oversight, not included.