How To Cut Roof Rafters

While it isn t that difficult to build rafters the wall system supporting the roof must be level and square.

How to cut roof rafters.

Cutting the remaining rafters. Once you ve marked all of your rafters you can complete all of the cuts in each rafter one after the other which will help you to save time. Birdsmouth which consists of two cuts a horizontal seat cut and a vertical shoulder cut. Mark and cut the first rafter ends the first step in building the roof rafters is to cut one rafter board to length with the ends angled properly and then to mark and cut the birds mouth and seat on the rafter.

Use it to make the proper measurements marks and cuts on each rafter. Tail cut which may be cut plumb or square depending on how the eaves are detailed. Because a roof requires many rafters to frame it speeds things along if you use the first rafter as a pattern or template for the other rafters. Use the template you completed in step iii to map out the rest of the rafters you ll need for the entire roof.

In order to build rafters you need to know the roof pitch and the roof span overall width of roof. Use a tape measure to measure the entire width of your building. The ridge end of the rafter and often the eve end will need to be cut to the angle of the roof slope. A common rafter has three basic parts you need to become familiar with.

Before you start cutting you first need to determine how long your roof rafters need to be and the angles at which you ll cut the top and bottom of the rafter. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube. Creating a birdsmouth cut is the classic way to prepare a rafter for a hand cut gable or shed roof.