Theyre need to put on a roof and the plywood is shot can we affix a veil of plywood over the infirm and reroof? i know people append double layers of shingles so could we plywood...

i know people append double layers of shingles so could we plywood over the behind the times shingle roof without tear it all down showing. then join a layer of 3 slap shingles i know it is a stupid question but we be trying to find a easier way to do it since we dont own much time thanks for your give a hand
Garbage disposal problems?
Answers:    not a good opinion is it? get adjectives the bad ply past its sell-by date!
Anyone know whether I can prep a bathroom...
It is not a stupid question! You should never put different materials over old ones, because the matured ones might have termites and other bugs, or the out-of-date material might contain mold. Anyway to answer your grill - DO IT RIGHT! the first time. Tear everything off and start fresh for the intensely best looking and securest roof contained by town!