Base or baseboard - A trim board placed against the wall around the room next to the floor.
Evaporator coil - The part of a cooling system that absorbs heat from air in your home. Also see condensing unit.
Fire brick - Brick made of refractory ceramic material which will resist high temperatures. Used in a fireplace.
Heat pump - A mechanical device which uses compression and decompression of gas to heat and/or cool a house.
Jack rafter - A rafter that spans the distance from the wall plate to a hip, or from a valley to a ridge.
Ledger strip - A strip of lumber nailed along the bottom of the side of a girder on which joists rest.
Panel - A thin flat piece of wood, plywood, or similar material, framed by stiles and rails as in a door (or cabinet door), or fitted into grooves of thicker material with molded edges for decorative wall treatment.
Post -and -beam - A basic building method that uses just a few hefty posts and beams to support an entire structure. Contrasts with stud framing.
Pressure Relief Valve (PRV) - A device mounted on a hot water heater or boiler which is designed to release any high steam pressure in the tank to prevent tank explosions.
Pump mix - Special concrete that will be used in a concrete pump. Generally, the mix has smaller rock aggregate than regular mix.
Shingle - A covering used to finish the sides or the roof of a house.
Slab on grade - A type of foundation with a concrete floor which is placed directly on the soil. The edge of the slab is usually thicker and acts as the footing for the walls.
Three-four-five triangle - An easy, mathematical way to check whether a large angle is square. Measure three feet along one side, four feet along the other; if the corner is square, the diagonal distance between those two points will equal five feet.