Either the addition is added to form a t shape to the house with the ridge running perpendicular to the main house roof or the addition is continued on the end of the house making it longer with the ridge running the same way as the existing house.
How to attach gable roof to gable end of house.
The ledger should be attached.
Use screws to secure the rafter to the sill plate.
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Butt the first new truss against the old one.
Then mount new trusses on the new addition walls.
A house attached patio roof takes advantage of the house s structure by supporting one end of the roof on a ledger mounted horizontally to the house.
Tying in to an existing gable 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.
The ledger typically a 2 by 6 is usually designed to hold one end of the patio roof rafters.
Gable end details for closed eaves.
Here we will focus on adding length to the end of a house roof.
Continue to measure 2 x 4 s to allow nailing at each truss until you reach the end of your roof and add the additional 6 inches and 1 1 2 inches for that end.
This configuration gives the look of an open eave but it has the same benefits ease of maintenance and energy performance as a closed eave.
The positioning of your rafters will depend on the pitch of the porch roof.
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If you decide on a shallow pitch porch roof use 2 by 6 foot rafters.
Next cut out slots in rafters so a 2 x 4 will sit flush with it on the cap plate.
Joist hangers can help you mount each rafter to the house.
Nail it near the peak of the trusses.
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