Lumber Roof Terminology

In the following section we ll cover some of the more common roof and rafter terms you ll need.

Lumber roof terminology.

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

1 cap or cover. The same roof has a 4 12 or 1 3 pitch. A metal closure set over or covering the joint between adjacent metal panels. Even texture uniform texture showing little contrast between spring growth and summer growth.

End matched tongue and grooved on ends of boards as well as the sides as in oak flooring. 4 in a membrane roof system. 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. Roof framing terms are related to the parts of a triangle.

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. The terms pitch and slope are simply two different ways of expressing the same measurement.