Tying In A New Roof To An Existing Roof

The roofing cement will resist possible leaks overnight.

Tying in a new roof to an existing roof.

Remove siding from the house where the new roof will attach to expose rafters or other framing of the old roof. After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in. Tying in to an existing gable roof. 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.

See more ideas about patio roof building a porch porch roof. Once you cut the old shingles back 36 or less work the new section into the old. Butt the first new truss against the old one. Then mount new trusses on the new addition walls.

A roofing diagram is on every package of shingles home depot or lowes. The easiest way to tie in the new shingles with the old is with a cut valley see four ways to shingle a valley. Using new shingles to run your valley. Up from the valley center and cut through the shingles and underlayment.

Depends on the slope of the new roof. 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. Hope i helped somewhat. The lower the slope the further it should extend.

Attach the horizontal beam by using a nail gun. After nailing down these two boards dab roofing cement on the nails and along the outside edge. Now you can begin assembling the outer rafters and attaching the rafter beam to the edge of the roof of the house. After that to make it flush with the roof of the existing house cut the two outer rafters.

The new flashing should go under the old felt and over the new felt and new roll roofing. The big idea is that layers of the lower roof should sit below corresponding layers of the upper roof. Connect a flat roof to a sloped or pitched roof with a ledger board. Roofing nails to the existing structural sheathing.

In any case the structure.