I am a general contractor doing a re-roofing job. Need advice from professional roofer.?

Question

the roof has only 1 layer presently so i am going to just roof over the old roof ( its in pretty good shape). the roof consists of several gable roof lines that dead-end into vertical walls (where there is, of course, step-flashing. my question is: do i need to install new step flashing with the new shingles or can i get by without it (so long as i don't nail thru the flashing)? thankx in advance

Answer 1

You could probably get away with it, but you would essentially be relying on the old roof. It would be best to do it right and install new flashing. Besides, things like that can come back to bite you in the a** somwhere down the road. If it does leak, it's not going to look good for you if you skipped a step.

Answer 2

always put new step flashing on an also make sure you tuck it under the siding somehow to prevent water from getting behind it. as always better safe than sorry the cost of a few "tin shingles" is nothing compared to the cost of replacing drywall due to a leaky roof

Answer 3

This is a question best asked by the city inspector. I have had roofs done where the inspector was OK without a second set of step flashing and another inspector in the same city insist new flashing as put down with the new roof.