Lumber Roof Terminology

Framing terms knowing the basic vocabulary is a necessary part of your work as a builder.

Lumber roof terminology.

End grain lumber grain as seen from one end of the board. Roof framing terms are related to the parts of a triangle. A metal closure set over or covering the joint between adjacent metal panels. End check separation of the wood fibers at the end of a board.

1 cap or cover. The same roof has a 4 12 or 1 3 pitch. Even texture uniform texture showing little contrast between spring growth and summer growth. 2 in a metal roof.

A roof s slope is the number of inches it rises for every 12 inches of horizontal run a roof with a 4 in 12 slope rises 4 inches for every 12 inches of horizontal run. Roof features associated with basic roof framing terms are shown in figure 2 2. A prefabricated solid engineered wood panel made from at least three layers of solid sawn lumber or structural composite lumber scl that are stacked crosswise and bonded together with structural adhesives to form a solid rectangular shaped panel that is intended for construction applications including roofs floors and walls in residential and nonresidential buildings. The terms pitch and slope are simply two different ways of expressing the same measurement.

End matched tongue and grooved on ends of boards as well as the sides as in oak flooring. In the following section we ll cover some of the more common roof and rafter terms you ll need. A narrow plastic wood or metal bar which is used to fasten or hold the roof membrane and or base flashing in place.