You ll need to remove the siding where it meets the roof.
Roof framing over existing roof.
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On the front of the roof edges the original roof deck sheathing was cut back flush with the wall and the fully adhered membrane folded down around the rafter tails to catch the.
Add the length of the overhang beyond this mark and.
Measure form the top of this line down the board to determine the line length or length of the rafter less the ridge.
The condition of the existing roof is critical.
Position the square at the end of the rafter board with the tongue on your left and facing away from you.
How to install a roof over an existing roof determine the feasibility.
Inspect the condition of your current roof.
On the gable ends this was pretty easy.
Remove the top several levels to.
One of the keys to over roofing is to tie the air control layer of the roof assembly to the air control layer of the wall assembly.
How to increase the pitch by building a roof over an existing roof use premade roof trusses.
The roof should be in sound.