I have a corner patio area that I want to cover by extending the current roof. The side is 14.5' long and 9.5' wide. The slope is along the 9.5' side.
I want to extend the roof line marked with blue to match the rest of the roof on that side.
One contractor told me that it wasn't code to do it like I wanted while another said he could do it.
Is it OK to extend the roof? I am in California.
Are there any plans that show something this? I can find many that show a ledger (San Diego County Patio Cover Plans) but none that attach to the roof in a corner.
Best Answer
I agree with Ed Beal. But yes, there are 2 ways to do this & they're equal in strength, for what's planning to be done. However, get a Permit from the Building Dept., so they can approve or correct the design, fasteners & supporting post(s) dimensions & footings. Plus, they can record that the patio was converted to a porch.
1st way is to do ledgers on both fasciae into structural members. Typically you'd pre-build the new structure so the short rafters are end screwed or nailed through the blue-line's ledger & the long lower beam & top ledger are through the side ledger (rafter). Also, use joist hanger type connectors to ensure nothing can pull away from each other.
2nd way is really the proper way & is likely what the one contractor was talking about. You'd remove both fasciae & screw or nail directly into the structure. For the slope side this is much less important. But, the blue-line top would have the new rafters cantilevered or sistered onto the home's existing rafters. This is much more secure & even lets you re-use both fasciae.