Lumber Roof Terminology

2 in a metal roof.

Lumber roof terminology.

In the following section we ll cover some of the more common roof and rafter terms you ll need. 4 in a membrane roof system. The same roof has a 4 12 or 1 3 pitch. 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.

Framing terms knowing the basic vocabulary is a necessary part of your work as a builder. The terms pitch and slope are simply two different ways of expressing the same measurement. Even texture uniform texture showing little contrast between spring growth and summer growth. Roof framing terms are related to the parts of a triangle.

End matched tongue and grooved on ends of boards as well as the sides as in oak flooring. End grain lumber grain as seen from one end of the board. End check separation of the wood fibers at the end of a board. 1 cap or cover.

A strip of wood usually set in or over the structural deck used to elevate and or attach a primary roof covering such as tile. The rigid material often 1 inch by 6 inch or one inch by twelve inch boards or sheets of plywood which is nailed to the rafters and to which shingles or other outside roofing materials are secured. A narrow plastic wood or metal bar which is used to fasten or hold the roof membrane and or base flashing in place.