Gambrel Roof Dimensions

Gambrel roof a gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof.

Gambrel roof dimensions. This series of diagrams shows just how the second floor lays out in each of our six different truss widths. Gambrel roof framing geometry calculator metric this gambrel roof confines to a semicircle and starts as the top half of an equal sided octagon. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. The lower slope length is measured from outside wall to the start of the upper sloped roof section.

Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Entering 0 x 0 in the fields will. With no interior walls or support posts our engineered gambrel truss design optimizes useable upstairs interior space. Enter the size of the upper fascia board or select a lumber size from the dropdown list.

Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Things you ll need ruler tape measure speed square chalk line saw 24 2 by 4 inches 5 1 cm 10 2 cm boards 6d nails 3 16d nails 8d common nails 5 inches 1 3 cm thick osb or plywood. Well let s face it it s a very attractive roof design but there are practical considerations as well.