After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in.
How to tie in a roof.
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We wanted to make the porch roof as steep as possible while keeping the peak of the roof below the wall to roof intersection at the top of the shed roof.
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Connect a flat roof to a sloped or pitched roof with a ledger board.
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.
How to tie in a gable roof addition written by andrew t.
Sep 12 2020 explore peter baker s board roof tie in on pinterest.
Tying in to an existing gable roof.
Remove siding from the house where the new roof will attach to expose rafters or other framing of the old roof.
Up from the valley center and cut through the shingles and underlayment.
After a taking some measurements and doing a bit of ciphering we established that the steepest pitch we could use on the porch roof was 4 in 12.