The easiest way to tie in the new shingles with the old is with a cut valley see four ways to shingle a valley.
Tying in a new roof to an existing roof.
Sep 12 2020 explore peter baker s board roof tie in on pinterest.
Remove siding from the house where the new roof will attach to expose rafters or other framing of the old roof.
Hope i helped somewhat.
Connect a flat roof to a sloped or pitched roof with a ledger board.
The new flashing should go under the old felt and over the new felt and new roll roofing.
Now you can begin assembling the outer rafters and attaching the rafter beam to the edge of the roof of the house.
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.
The big idea is that layers of the lower roof should sit below corresponding layers of the upper roof.
Up from the valley center and cut through the shingles and underlayment.
In any case the structure.
Once you cut the old shingles back 36 or less work the new section into the old.
Tying in to an existing gable roof.
The lower the slope the further it should extend.
Tie into the end of an existing gable roof by removing existing facing boards wall siding and any other obstructions back to the first truss of the old roof.
Then mount new trusses on the new addition walls.
See more ideas about patio roof building a porch porch roof.
Attach the horizontal beam by using a nail gun.
After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in.
A roofing diagram is on every package of shingles home depot or lowes.
Using new shingles to run your valley.
Depends on the slope of the new roof.
After nailing down these two boards dab roofing cement on the nails and along the outside edge.
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Butt the first new truss against the old one.
Roofing nails to the existing structural sheathing.