Butt the first new truss against the old one.
Tying gable roof into existing roof.
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The angle is then cut and the blind valley fastened into place.
Tying in to an existing gable roof.
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At the low end of the valley the subfascias of the two roofs are mitered with a block filling.
Ensure that your porch is leveled.
Aug 21 2018 tying a gable roof into an existing roof is a long expensive project usually undertaken only when there is a major addition or renovation to a house.
Strip the roofing from the old roof at the connection point to.
The gable roof on the porch addition was framed with a dropped structural ridge supporting the common rafters above.
The gable rafters on either side of the shed roof are doubled and short cripple rafters run between the header and the ridge above it.
See more ideas about patio roof building a porch porch roof.
There are a couple of big concerns.
Called tying in this helps to weatherproof and strengthen the joint.
Creating a small triangular extension of the existing roof.
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After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in.
Tie a new gable or hip roof to an existing gable or hip roof with valley rafters which perform the same function as ledgers.
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.
Up from the valley center and cut through the shingles and underlayment.
Then mount new trusses on the new addition walls.
When adding a new gabled roof addition to your home you will need to find a way of joining the two roofs together.