Tie a new roof to an existing gable differently.
How to tie in new roof to existing roof.
After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in.
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.
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Strip the roofing from the old roof at the connection point to.
If your addition butts up to the end of the house either on the same roof plane or lower e g a one story addition on a two story house end start your framing by nailing a new truss either to the last truss in the old roof or to the wall of the house.
Depends on the slope 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.
In this video we show you how to tie in an existing roof with a new roof to avoid any future leaks or issues putting you back where you started.
Tie a new gable or hip roof to an existing gable or hip roof with valley rafters which perform the same function as ledgers.
Now you have tied in the porch roof addition to the house.
The big idea is that layers of the lower roof should sit below corresponding layers of the upper 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.
The new flashing should go under the old felt and over the new felt and new roll roofing.
The roof i.
The lower the slope the further it should extend.
Up from the valley center and cut through the shingles and underlayment.
Install the 2x4 joists with some screws and brackets to the house edge.