The National Institute of Home Builders - Home Page
Glossary of Home Building Terms



J channel. 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; used on the vertical edge of the last drywall sheet

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

jack post. 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; used as a replacement for an old supporting member in a building

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

jack stud. A partial stud nailed next to full studs to support the header at door (and some window) openings

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

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

joint cement or joint compound. A powder that is usually mixed with water and used for joint treatment in gypsum-wallboard finish; a.k.a. spackle, drywall mud

joint tenancy. A form of ownership in which the tenants own a property equally; if one dies, the other automatically inherits the entire property

joint trench. When the electric company and telephone company dig one trench and drop in both of their service lines

joist. Wooden 2 X 8's, 10's, or 12's that run parallel to one another and support a floor or ceiling, and supported in turn by larger beams, girders, or bearing walls

joist hanger. A metal "U" shaped item used to support the end of a floor joist and attached with hardened nails to another bearing joist or beam

jumpers. Water pipe installed in a water meter pit (before the water meter is installed); electric wire that is installed in the electric house panel meter socket before the meter is installed (not legal in some places)

 


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