How To Extend Roof Sheathing

For instance if the existing roof has.

How to extend roof sheathing.

Most complicated is to extend an eave at the same pitch as the. Roof sheathing attaches to the surface of the rafters or trusses to form the structural skin of the roof. Special metal plywood clips will add stability to the splices where the sheets meet between rafters. Then we re going to use a scrap of 2x4 to space off the square and strike a line there.

We go in depth on how to install roof sheathing. It spans the rafters to support the roofing and in the case of panel sheathing such as plywood or osb it acts as a diaphragm with the walls to resist horizontal loads. Measure from the peak of the roof along each rafter on one side of the roof to determine the exact length of each rafter to find the length of. Extending a gable roof can be tricky since it involves working on the roof but you may be able to do it yourself if you only need to add 1 2 2 inches 1 3 5 1 cm.

A bird s mouth cut is a notch in the underside of the rafter which reduces the space between the top wall plate and the underside of the roof sheathing. For multi story buildings the sheathing on the bottom should extend down to the bottom of the lowest framing member extend to the halfway point on rim joist as shown in red. Cut each rafter tail on the chalk line with a circular saw to ensure that every rafter is the same length. Stagger the joints of each course of sheathing.

When installing roof sheathing use nails with longer nail shank larger diameter and a larger head than may be required. Starting with how to place the first row of sheathing we cover fastening methods the use of h clips stagg. However for larger extensions you ll need to hire a professional to get up there and remove large portions of the roof before extending the overhang. Carefully work your way up to the peak of the roof.

Also use more nails and place them closer together to build a stronger roof. The next piece above it should be allowed a 1 8 expansion joint ending at the top plate or at the midway point of the next rim joist. This indicates the truss tails.