Truth window

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A truth window in a strawbale house.
A truth window with no covering.

A truth window (or truth wall[1]) is an opening in a wall surface, created to reveal the layers or components within the wall.[2][3] In a strawbale house, a truth window is often used to show the walls are actually made from straw bales. A small section of a wall is left unplastered on the interior, and a frame is used to create a window which shows only straw, which makes up the inside of the wall.[4]

Many designs exist for truth windows. Glass may be placed over the window, or an openable wooden panel, or it may be a simple framed opening.

The possible vulnerability of a truth window to moisture intrusion is sometimes raised as a concern.[5]

See also[edit]


  1. ^ Green Development: Integrating Ecology and Real Estate. 1998. Alex Wilson. p500.
  2. ^ Good Green Homes. 2003. Jennifer Roberts. p156.
  3. ^ Solar Today. 1994. American Solar Energy Society. p21.
  4. ^ The Good House Book. 2004. Clarke Snell. p174.
  5. ^ Straw-bale as a viable, cost effective, and sustainable material for use in southeast Ohio. 2005. Leanne R. Marks.