I raised the house ceilings to 120 and set the porch to 97 1 8.
How to attache gable roof to gable end of house.
You have to do it thoroughly so that the rafters sit flush on it.
Tying in to an existing gable roof.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
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After that to make it flush with the roof of the existing house cut the two outer rafters.
The pitch is 1 9 16 in 12.
I have attached a quick sample.
Then mount new trusses on the new addition walls.
Next cut out slots in rafters so a 2 x 4 will sit flush with it on the cap plate.
Butt the first new truss against the old one.
This brings us to the point that putting a rafter beside a wood truss or a truss beside a rafter on the same height of wall may not always work.
Nail it near the peak of the trusses.
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.
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.
Attach the horizontal beam by using a nail gun.