Roof Framing Steps

Like wall studs and floor joists rafters and trusses are spaced every 16 or 24 inches from center to center.

Roof framing steps.

This is the layer of material that goes on top of the frame and provides the surface of the roof. Install collar ties purlin and bracing as needed for the rafters and ridge to prevent sagging. Wondering how to build the structure of your roof. 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.

Nail the first boards on top of your wall where you plan to build your roof. Nail 2 boards onto your walls as top plates. The rafters are usually positioned directly above the wall studs. When you nail in the second boards offset the seams of the upper and lower layers by at least 24 in 61 cm.

We will go over raft. The process can be broken down into four main steps and they are. This is the construction and installation of the roof frame which can be done with premade trusses. Input the pitch of the roof that you calculated above we ll use 7 12 for reference throughout on the framing square.

The rise or height of the roof at its peak is the altitude of the triangle. The high end of the rafter sits on or attaches to a ledger plate attached to the existing wall. The lower end is done the same way a skillion or shed roof is. Use 8 penny nails to attach the first 2 in 4 in 5 1 cm 10 2 cm board to the wall studs.

The run or half the building span is the base of the triangle. And the line length measurement from the roof peak to the building wall is the hypotenuse. 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. Notch a birdsmouth where it sits on the low wall and extend it past the wall for the eaves.

Install any secondary members gable ends hips valleys and jack rafters. The last stage of the roof framing is the installation of lookout blocks at each rafter tail along the overhang for the soffit. Stick framing combines roof rafters with ceiling joists. Lean to shed roof framing.

Most roofs utilize 16 inch spacings for strength and rigidity.