Siding Terms & Definitions

Anzac Siding

A form of tapered bevel siding.

Backpriming

The application of paint or stain to the backs of siding to ensure the stability of the wood because it keeps moisture from entering through the back sides of the siding.

Bevel Siding

Shingles or other siding board thicker on one edge than the other. The thick edge overlaps the thin edge of the next board.

Board & Batten Siding

Siding composed of wooden boards applied vertically, creating a barn-like exterior. Batten slats cover the wall joints in the siding. Boards are usually 8 to 12 inches wide.

Board on Board Siding

Exterior siding method, which leaves gaps a bit narrower than the boards between the applied boards. Boards the same size as the first boards are nailed on to cover the gaps.

Clapboard Siding

Siding, consisting of long, beveled, overlapping horizontal boards, usually cedar, which are usually tapered in thickness, with the thicker lower edge of one board overlapping the thinner top edge of the board below.

Corner Board

Exterior trim used at the corners of a house to protect the ends of siding.

J-Channel

Used for receiving siding on all sides of windows and doors, at rake edges of gables and in other miscellaneous situations. Deeper J-channels are for insulated siding, and narrower J-channels for non-insulated siding.

Lap

The part of the roofing/siding material that overlaps a section of adjacent material.

T1-11

Hardboard, exterior siding that has vertical grooves made to simulate separate boards.

Wall Sheathing

Sheets of plywood, gypsum board, or other material nailed to the outside face of studs as a base for exterior siding.

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