Gambrell Roof Construction

A gambrel roof is a popular roof style on many contemporary barns and sheds.

Gambrell roof construction.

As always seek the advice of your local building officials if you plan on using this information to build your shed roof to make sure your shed will be built to local building code specifications. The oldest known gambrel roof in america was on the second harvard hall at harvard university built in 1677. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. A couple years ago when i was building my 15 by 20 foot log cabin in far northern washington i decided to top the building with a gambrel rather than a more conventional gable or a frame roof.

Gambrel roofs are symmetrical with two slopes on each side of the roof. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. 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.

The following information is a guideline you can use for building a gambrel shed roof. Lower height the lower height is the distance from the floor to the peak. The oldest surviving framed house in north america the fairbanks house has an ell with a gambrel roof but this roof was a later. 1677 78 peter tufts house.

Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon. With a gambrel roof is the c. Possibly the oldest surviving house in the u s.