Gambrel Roof Details

Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth.

Gambrel roof details.

Gambrel roofs are symmetrical with two slopes on each side of the roof. A gambrel roof is a popular roof style on many contemporary barns and sheds. Also most gambrel roofs require a kneewall to support the knuckle or the joint between the upper and lower roof slopes. Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon.

On each side the truss has two slopes the one on top is at a shallow angle the other one is longer and steeper. Gambrel roofs can be a challenge. The project architect briefly discusses the basics of gambrel roof design. To calculate a gambrel roof select gambrel roof from the roof type dropdown list or click on the appropriate toolbar button to calculate a gambrel roof.

With overhang selected drag slider to increment decrement birdsmouth seat width to suit. If you plan on building and installing your own gambrel roof you ll have to draw out plans first to determine the proper dimensions. Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area. Dealing with two roof pitches instead of one seems to complicate matters disproportionately.

Gambrel roof trusses the gambrel roof trusses are symmetrical and their shape in elevation could be described as one half of an asymmetrical octagon. A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof.