Flat roof has a small leak in corner. It’s over the kitchen which was an extension. Someone has come out (recommended) and said there was a tear, showed me the photos, said it needed replacing with new felt roof. Had a quote for the full thing but I’m wondering now why there can’t be some other sort of fix? Can you not replace part of it or add on some cement or similar just to that corner? I don’t know anything about this so he may well be right and the whole thing has to be re done, I just don’t know.