Gambrell Roof Construction

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

Gambrell roof construction.

Lower height the lower height is the distance from the floor to the peak. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. Gambrel roofs are symmetrical with two slopes on each side of the roof. 1677 78 peter tufts house.

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 following information is a guideline you can use for building a gambrel shed roof. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. Gambrel roof a gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof.

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. The oldest surviving framed house in north america the fairbanks house has an ell with a gambrel roof but this roof was a later. Possibly the oldest surviving house in the u s. The oldest known gambrel roof in america was on the second harvard hall at harvard university built in 1677.

Building width enter the width of the building. Use this information at your own risk. Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area.