The back channel is connected to the rafter directly and reinforced.
Tie in roof lines.
By doing this method you will have a clean finish that is connected to the wall line.
After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in.
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.
There are many roof.
To tie into the side of an existing roof put a new roof truss on the walls of the addition brace it upright then snap chalklines on the shingles to mark the center line of the new roof valleys where old and new roofs will connect.
Up from the valley center and cut through the shingles and underlayment.
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Because the level cut on the jacks would be so long we added 2x4 sleepers inside the 2x8s for a more complete bearing.
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.
The easiest way to tie in the new shingles with the old is with a cut valley see four ways to shingle a valley.
After that cut the rafters back to the wall line.
How to tie building roof systems into one another.
We extended the lines of the sleepers up the roof until they intersected.