Framing Rafters Into Existing Roof For A Covered Porch

To keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge.

Framing rafters into existing roof for a covered porch.

After that to make it flush with the roof of the existing house cut the two outer rafters. Now you can begin assembling the outer rafters and attaching the rafter beam to the edge of the roof of the house. Frame your porch roof by continually adding rafters until it extends one foot past your porch walls or support columns. Sheathing 1 2 inch plywood or osb is nailed to the rafters.

Once completed roofing paper will be installed. A fascia board which is a roofing material that helps compensate when there are inevitable inconsistencies in rafter length will mount on the front and on the sides of your porch roof frame. On a two story house you can usually tie the ledger into a band joist also called a rim joist located between the floors as shown below. How to tie a additions roof to existing roof roof additions to existing roofs how to construct a roof from an exsisting shead how to change a roof line how to attach a deck roof to existing roof how to add a roof over porch attache porch roof on house attach shed roof to house adding a roof to screened in porch adding a roof to existing.

Then attach drip edge over the roofing paper. When a shed roof ties into an existing roof the new roof could be a simple lean to that covers a deck or porch or it could be the shed roof of a substantial addition. If attaching a patio roof to a ledger beneath the eaves does not allow for enough headroom you can set the new patio roof s rafters on the wall s top plate. In this video you will learn about figuring the angle for a top cut on porch rafters that are going over another roof surface and also about a useful jig to.