Butt the first new truss against the old one.
Howmdo i add onto a gabled roof for room addition.
The gable is the peaked a shaped roof you typically see on cape.
Then mount new trusses on the new addition walls.
Called tying in this helps to weatherproof and strengthen the joint.
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How to add a new addition to a gable roof type.
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 top chord smoothly extends out past the wall to create the overhang.
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