Refrigerant - A substance that remains a gas at low temperatures and pressure and can be used to transfer heat. Freon is an example and is used in air conditioning systems.
Barge - Horizontal beam rafter that supports shorter rafters.
Payment schedule - A pre -agreed upon schedule of payments to a contractor usually based upon the amount of work completed. Such a schedule may include a deposit prior to the start of work. There may also be a temporary 'retainer' (5 -10% of the total cost of the job) at the end of the contract for correcting any small items which have not been completed or repaired.
EPACT - Energy Policy Act. Government regulations promoting the use of energy efficient lighting by prohibiting the manufacturing or importing of certain inefficient bulb types.
Ceiling joist - One of a series of parallel framing members used to support ceiling loads and supported in turn by larger beams, girders or bearing walls. Also called roof joists.
Nonbearing wall - A wall supporting no load other than its own weight.
Landing - A platform between flights of stairs or at the termination of a flight of stairs. Often used when stairs change direction. Normally no less than 3 ft. X 3 ft. square.
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