How To Cut Roof Rafters Angle

Knowing how to make this calculation will make your roof construction project easier and will ensure the safety and success of your roofing project once completed.

How to cut roof rafters angle.

The ridge end of the rafter and often the eve end will need to be cut to the angle of the roof slope. If it rises only 6 for every 12 it s a 6 12 pitch. A birds mouth is a combination of the two cuts made so the roof rafter sits tightly onto the wall plates square edge. The roof rafters provide integral structural support to the roof.

The traditional method has been rise inches 12 run inches. If you re framing a gable roof on a new house or building a shed or even a doghouse with a gable roof you ll need to cut a number of roof rafters. The roof on this shed is a 4 in 12 slope which makes it a 18 and one half degree angle on the board ends. A plumb cut this is an angle to cut that will create a vertically plumb line on the rafter.

Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube. So if your roof is a 45 degree angle that is for every 12 along the horizontal run it rises 12 it s a 12 12 pitch. A rafter or speed square will have marks for both of these angles. Birdsmouth joint how to cut a birdsmouth and how to cut and install roofing rafters and joists.

Roof pitch is measured in a rise to run ratio with the vertical rise always shown first. An angle cut is a very common cut needed for constructing rafters for any roof.