How To Use Framing Square For Roof Pitch

The length of the plumb cut is determined by the width of the fascia board.

How to use framing square for roof pitch.

Lay a framing square flat on the board to be used as a rafter near one end. 228 204 x 12 13 412. Place the framing square on a table with the skinny length pointing right. On both the long and short arms of the framing square are marked various framing tables giving rafter lengths roof slopes and the proper angle of cuts for various roofing connections such as a rafter end abutting the ridge board the birds mouth cut at the rafter segment that rests atop a wall plate hip and valley rafter cuts and other information.

Read the pitch on the side of the rafter square. More project and tips. 204 x number on framing square 228. Place the pivot point against the shingles.

Determine the slope or pitch of the roof by referring to your building plans. Layout the plumb cut and level cut for the rafter tail. 13 412 is the unit rise in inches per foot of our example roof run. Roof framing rafter layout from one end of the rafter material using a speed square or framing square mark an x in 12 angle on the rafter and cut it.

How to build roof rafters using a framing square. The pitch is defined as the vertical distance a roof. Number on framing square 228 204 x 12in. Measure down y height from the long point of the rafter cut and make a mark.

Then place a torpedo level on the fat base of the rafter square and adjust the square until the level is level. This will the first point of the rafter measurement line. Framing square basics how to use one. The thicker longer section is called the blade.

The skinny length is called the tongue. The trick here is understanding the number on the framing square is the unit rise per foot of run. You are looking at the face of the framing square. The horizontal blade should align with the bottom edge of the board at 12 inches and the vertical tongue should align at the roof pitch.