Nail Inspection - - An inspection made by a municipal building inspector after the drywall material is hung with nails and screws (and before taping).
Natural Finish - A transparent finish which does not seriously alter the original color or grain of the natural wood; usually provided by sealers, oils, varnishes, water repellent preservatives, and other similar materials.
NEC (National Electrical Code) - A set of rules governing safe wiring methods; local codes which are backed by law may differ from the NEC in some ways.
Nesting - A method of reroofing with new asphalt shingles over old shingles in which the top edge of the new shingles is butted against the bottom edge of the existing shingle tab.
Neutral Wire - Usually color-coded white, this carries electricity from an outlet back to the service panel.
Newel Post - The large starting post to which the end of a stair guard railing or balustrade is fastened.
Nonbearing Wall - A wall supporting no load other than its own weight.
Non veneer Panel - Any wood-based panel that does not contain veneer and carries an APA span rating, such as wafer board or oriented strand board.
Normal Slope Application - Method of installing asphalt shingles on roof slopes between 4 inches and 21 inches per foot.
Nosing - The projecting edge of a molding or drip or the front edge of a stair tread.
Notch - A crosswise groove at the end of a board.
Note - A formal document showing the existence of a debt and stating the terms of repayment.
Nozzle - The part of a heating system that sprays the fuel of fuel-air mixture into the combustion chamber.