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Glossary group: J

Joint

  • March 5, 2021
  • camuser

The location between the touching surfaces of two members or components joined and held together by nails, glue, cement, mortar, or other means.

Jamb

  • March 5, 2021
  • camuser

The side and head lining of a doorway, window, or other opening. Includes studs as well as the frame and trim.

Jack rafter

  • March 5, 2021
  • camuser

A rafter that spans the distance from the wall plate to a hip, or from a valley to a ridge.

Jack post

  • March 5, 2021
  • camuser

A type of structural support made of metal, which can be raised or lowered through a series of pins and a screw to meet the height required. Basically used as a replacement for an old supporting member in a building. See Monopost.

J Channel

  • March 5, 2021
  • camuser

Metal edging used on drywall to give the edge a better finished appearance when a wall is not “wrapped” Generally, basement stairway walls have drywall only on the stair side. J Channel is used on the vertical edge of the last drywall sheet

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