Roof Framing Steps

On the body of the square the longer side input the 12 and input the 7 on the tongue the shorter side of the square by lining up the stair gauges at the corresponding point on the square.

Roof framing steps.

And the line length measurement from the roof peak to the building wall is the hypotenuse. So if the pitch of your roof is 7 12 place one stair gauge on the vertical part of the framing square the tongue at the 7 inches 18 cm mark and place one stair gauge on the horizontal part of the framing square the body at the 12 inches 30 cm mark. The high end of the rafter sits on or attaches to a ledger plate attached to the existing wall. Install any secondary members gable ends hips valleys and jack rafters.

Nail 2 boards onto your walls as top plates. The last stage of the roof framing is the installation of lookout blocks at each rafter tail along the overhang for the soffit. The rise or height of the roof at its peak is the altitude of the triangle. This is the layer of material that goes on top of the frame and provides the surface of the roof.

Use 8 penny nails to attach the first 2 in 4 in 5 1 cm 10 2 cm board to the wall studs. Wondering how to build the structure of your roof. Notch a birdsmouth where it sits on the low wall and extend it past the wall for the eaves. Like wall studs and floor joists rafters and trusses are spaced every 16 or 24 inches from center to center.

A lean to roof just means it s attached to an existing structure. Lean to shed roof framing. This video covers one of the most exciting parts of roof framing installing rafters. Install collar ties purlin and bracing as needed for the rafters and ridge to prevent sagging.

The lower end is done the same way a skillion or shed roof is. Stick framing combines roof rafters with ceiling joists. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. The run or half the building span is the base of the triangle.

Nail the first boards on top of your wall where you plan to build your roof. Most roofs utilize 16 inch spacings for strength and rigidity. Input the pitch of the roof that you calculated above we ll use 7 12 for reference throughout on the framing square. The process can be broken down into four main steps and they are.

When you nail in the second boards offset the seams of the upper and lower layers by at least 24 in 61 cm.