- T&G / Tongue And Groove
- The ridge on one side and slot on the other side of interlocking planks used in flooring.
- Tab
- The exposed portion of strip shingles defined by cutouts.
- Telegraphing
- Shingle distortion that may arise when a new roof is applied over an uneven surface.
- Termite Shield
- Metal shield between the foundation and the sill plate.
- Thermostat
- Device to regulate the operation of the heating and cooling equipment depending on the temperature.
- Three-dimensional Shingles
- Strip shingles containing more than one layer of tabs to create extra thickness. Also called three-dimensional shingles or architectural shingles.
- Threshold
- Wood or metal strip with sloped edges, secured the floor in the doorway.
- Top Plate
- The horizontal piece of wood nailed to the top of a partition our stud wall.
- Transom
- Horizontal beam or member separating a door of a window above it.
- Truss
- Prefabricated component used for roof rafters or floor joists. Any rafter or joist constructed in a manner to allow it to span a greater distance than a rafter normally would.
- U-Guard
- A plastic shield that protects electric wires on the side of utility poles or a house. Recognizable by its gray color.
- Underground Service
- The incoming electrical supply for the home is buried underground.
- Underlayment
- Asphalt saturated felt used beneath roofing to provide additional protection for the deck.
- Ungrounded Outlets
- Older style outlet that only accepts two-pronged plugs. These outlets do not have a ground wire. While they are acceptable in homes with older type wiring, they are not as safe as grounded outlets. Can be made safer by adding a GFI.