How To Cut Attic Trusses

This is the steepest commonly built roof.

How to cut attic trusses. Be very precise with this cut since unlike the plumb cut you can t saw all the way through the board. Trusses are similar to roof rafters. One use of trusses is for the support of a roof. Homeowners should avoid cutting or modifying their roof trusses.

While they look the same you probably didn t notice the subtle differences. Carefully follow the lines you ve marked for the tail cut so that it maintains the specific measurements and angles. Let s compare common roof trusses with the roof framing materials that were used in your parent s house. Adjust the mitre saw for the cut.

These trusses are usually engineered by a structural engineering company in order to carry a specific roof load. Cutting and altering of trusses is not permitted. When a truss becomes damaged cut or modified there is a. In regards to cutting trusses an excerpt from the nds national design specification for lumber is quoted in the hansen pole buildings construction manual.

Saw along the line you marked for the birdsmouth cut. Cut a 45 degree angle at each end for a 12 12 roof a roof that rises 12 inches vertically for every 12 inches horizontally to create a really spacious attic.