The sill plate or piece of wood that secures the supports to the roof should sit flush to the top edges of the roof support columns.
Tying in a porch roof to an existing roof.
Tradesman use them mainly.
You have to make.
The bottom of our blind valley was about 30 inches short of the bottom of the porch roof so we extended the line of the valley down to the edge of the new roof.
First the 4x4 beams need to be cut to the size of the existing roof so the porch roof and the edge of the existing roof will be even when the job is complete.
Then mount new trusses on the new addition walls.
Attach a sill plate to the house between the two side supports of the porch.
You can either remove the eave or just keep it.
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Your contractor can safely attach nbsp previous photo in the gallery is attach patio roof existing house the worst adding a gable roof to an existing roof tying a gable roof on an existing roof is a nbsp.
Measure the size of the beam that you are going to use.
Step 4 position the rafters on top of the sill plate.
Attaching a roof to an existing roof.
To do this we had to extend the plane of the shed roof out over the porch roof creating a small triangular extension of the existing roof.
This will provide a solid framework for attaching the metal panels.
Using lag bolts and a screwdriver fasten the base of the posts to the ground.
Tying in to an existing gable roof.
In any case the structure.
Now take the 4x4 beams and erect them to the perimeter outside the porch about four feet apart.
Measure the sightline clearance height from the roof to the house not the other way around.
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.