Roof Framing Over Existing Roof

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Roof framing over existing roof.

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. How to install a roof over an existing roof determine the feasibility. Multiple layers of shingles can make it difficult or impossible for the nails to penetrate. How to increase the pitch by building a roof over an existing roof use premade roof trusses.

The fully adhered membrane wrapped down over the cut back roof deck to tie into the wall water control layer and air control layer photograph 11. Inspect the condition of your current roof. Remove the top several levels to. The condition of the existing roof is critical.

Premade roofing trusses will be easier and take less time than installing a stick built roof. 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. You ll need to remove the siding where it meets the roof.

Position the square at the end of the rafter board with the tongue on your left and facing away from you.