Lumber Roof Terminology

Even texture uniform texture showing little contrast between spring growth and summer growth.

Lumber roof terminology.

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. End matched tongue and grooved on ends of boards as well as the sides as in oak flooring. 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. 1 cap or cover.

End check separation of the wood fibers at the end of a board. The terms pitch and slope are simply two different ways of expressing the same measurement. In the following section we ll cover some of the more common roof and rafter terms you ll need. 2 in a metal roof.

Roof features associated with basic roof framing terms are shown in figure 2 2. End grain lumber grain as seen from one end of the board. 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. The same roof has a 4 12 or 1 3 pitch.

A metal closure set over or covering the joint between adjacent metal panels. 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. Roof framing terms are related to the parts of a triangle.