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. Natural finishes are 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.

Neutral Wire - Usually color-coded white, this carries electricity from an outlet back to the service panel. Also see hot wire and ground.

Newel - A post to which the end of a stair railing or balustrade is fastened. Also, any post to which a railing or balustrade is fastened.

Nonbearing Wall - A wall supporting no load other than its own weight.

Nosing - The projecting edge of a molding or drip. Usually applied to the projecting molding on the edge of a stair tread.

Notch - A crosswise rabbet at the end of a board.