I think i would set the frame work that the rafters will sit on then set up four of the common rafters and run the ridge board to where it will sit on the house or pull a string level across to find the point at which the ridge meets the roof.
How to tie a new roof patio into existing house.
Cover the column frame with siding brick or any outdoor material that matches the exterior of your home.
You have to do it thoroughly so that the rafters sit flush on it.
Install the 2x4 joists with some screws and brackets to the house edge.
Locating and mounting the ledger is normally a fairly easy process.
As it turned out the existing roof structure is a truss system but they were able to contact the original truss manufacturer to verify that cutting the tails off would not jeopardize the structural integrity of the trusses.
Never alter engineered trusses without the approval of a licensed professional engineer.
Brace the column frame in place using l brackets and concrete screws.
From the we hope this is obvious desk.
Using two inch by four inch studs build a frame for columns that stand from the porch floor to the soon to be built roof.
The edge of the roof of the house and the frame to the porch should be seamless now.
After that to make it flush with the roof of the existing house cut the two outer rafters.
The technique we re going to share with you shows you how to use your home s structure by supporting one end of the patio roof on a ledger that is mounted horizontally to the.
How to attach a patio roof to an existing house.
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Make sure the 2x4 joists are turned so the boards narrow edge faces the floor of the porch.
The ledger should be attached before the foundation is built for a deck patio roof posts and other structure.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
Attach the horizontal beam by using a nail gun.
To tie the design together peter chose to cut the rafter tails off the extend the exterior wall up to the underside of the new roof.
A house attached patio roof takes advantage of the house s structure by supporting one end of the roof on a ledger mounted horizontally to the house.
The ledger typically a 2 by 6 is usually designed to hold one end of the patio roof rafters.