We've got the big old farmhouse, with 3 different size/shape metal roofs. The first one is 2 story, log house, very tall and very steep metal roof, and the other 2 roofs are add-ons, not so steep, but all hooked together of course. There is allot of metal up there, it's all metal. It's a big house, longways. The north side on all 3 leak somewhat, and we've got to get em fixed, again. The south sides don't leak at all. We've painted on the white & silver stuff over and over and it dosen't last long at all. The roofs are not level, all wavy here and there. And we do not want to take off what is allready up there. Do you all know if there is an easy way to put a rubber coating over our metal? Like rubber sheets or brush-on. I've been told to try the Pick-up truck bed-liner rubber coating, about $20 a gallon, and also could try swimming pool rubber coating for sidewalks around the pool, both are supposed to stick to metal. I've looked at the websites for sheets of rubber for mobile home roofs, and it's $.44 a square foot, pretty costly. Any ideas that wouldn't cost a small fortune? Surely there's got to be a good product out there that's affordable. Thanks.