Cathedral Roof Framing Details

Each truss is composed of two opposing rafters and a ceiling joist.

Cathedral roof framing details.

Contributing editor scott mcbride replies. For example in texas where stick framing is common there are entire crews specializing only in framing roofs. How to avoid condensation leaks attic mold insulation mold structural damage to roof framing when roof venting is not possible cathedral roof and knee wall insulation venting air path options in older homes hot roof designs. This type of roof differs from an uninsulated roof over an unconditioned vented attic.

Suggestions for un vented or hard to vent building roof cavities. Figure 2 2 roof framing terms. To avoid these problems in a structure with a cathedral ceiling it helps to understand how a typical roof frame works. Worries about the hot roof un vented cathedral ceiling designs how to.

However constructing a stick framed roof is not always easy. The rafters rest atop this ridge beam and were strapped together using steel strap ties nailed along the rafter upper edges before the roof sheathing was set in place. Line length is the hyptenuse of the triangle whose base equals the total run and whose altitude equals the total rise. But the strength of the triangle relies on each and every one of the three pieces of lumber.

When fastened together these three pieces of framing lumber create a very simple triangle that can be exceedingly strong. Jun 20 2016 in this article contributing editor scott mcbride gives his advice on how to successfully frame a cathedral ceiling. Learn how to enlarge ceiling space while avoiding a sagging ridge or bowed walls. An original video by http www designbuilder.

This detail shows the vertical post supporting a built up structural ridge supporting a cathedral ceiling spanning 27 feet and constructed by one of the authors df in 1979. A detailed visual guide to the components of a cathedral roof frame a popular porch and home addition feature. Traditional roof framing consists of two slanted rafters that are connected at their base with a horizontal piece of lumber. 1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches.

A plain flat ceiling gable is actually a procession of light trusses usually spaced 16 in.