Hi all, I have a flat roof on an extension, 6m x 6m, covered with bitumen. It's started cracking up. I know how it feels. Recently there has been some water ingress. Looking at the roof surface, it's hard to see where it comes from since there's more crack than Brixton. I have the materials to recoat the roof however the inclemant weather has been making it tricky. I was wondering if there was any advice for a temporary fix to hold it out for the winter that can be applied in the winter and is not going to cost a fortune?