Heating load - The amount of heating required to keep a building at a specified temperature during the winter, usually 65ø F, regardless of outside temperature.

Hot wire - The wire that carries electrical energy to a receptacle or other device -in contrast to a neutral, which carries electricity away again. Normally the black wire. Also see ground.

Fire retardant chemical - A chemical or preparation of chemicals used to reduce the flammability of a material or to retard the spread of flame.

Double hung window - A window with two vertically sliding sashes, both of which can move up and down.

Butt edge - The lower edge of the shingle tabs.

Knot - In lumber, the portion of a branch or limb of a tree that appears on the edge or face of the piece.

Semigloss paint or enamel - A paint or enamel made so that its coating, when dry, has some luster but is not very glossy. Bathrooms and kitchens are normally painted semi -gloss

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