Gambrel Roof Rafter Layout

The starwood gambrel rafter can be used to give your building the classic barn look or can be used for an economical storage solution.

Gambrel roof rafter layout.

Either use our standard design or we can custom build to your design. Click here to see more shed building videos. Place a 6 in 12 in 15 cm 30 cm rectangular piece of osb or 3 4 in 1 9 cm thick plywood under the joint of an assembled rafter. This approach conforms to my general design philosophy when in comes to the structural design of houses.

Purlins joints are used slopes are fixed and the length of the top and bottom rafters including overhang will always be equal. Click here to buy the plans to build this tall barn style shed with loft for only 9 97. Then use a saw to cut the lines that you drew. This gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon.

How to build perfect barn style gambrel roof trusses. Trace the top of the joint so the angle is at the same degrees as where the rafters connect. Trace and cut osb or plywood joints to connect the rafter pieces. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth.

Design is flexible enough to fit your own design needs. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape. The numbers vary depending on your local design wind speed zone but the bottom line is that you can use the same hardware here that you would use if the roof were an ordinary 12 pitch roof with straight rafters.