Trimmer (construction)

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

In light-frame construction, a trimmer is a timber or metal beam (joist) used to create an opening around a stairwell, skylight, chimney, and the like. Trimmers are installed parallel to the primary floor or ceiling joists and support headers, which run perpendicular to the primary joists.[1][2]

It can also refer to a jack stud that supports a header above a window or door opening.

Traditionally, a stud which was less than full length was sometimes referred to as a cripple.[3][4][5]


  1. ^ "Architectural Graphic Standards Online". Retrieved 2016-07-25.
  2. ^ Ching, Francis D. K. (2001). Building Construction Illustrated, 3rd Edition. John Wiley & Sons, Inc. pp. 4.21, 4.31. ISBN 0-471-35898-3.
  3. ^ Glossary, building terms, word definitions. Define Cripple Stud
  4. ^ Hometime Glossary – Framing
  5. ^ Building a Wall 3 - Three Stud Corner and Windows |