Advice - Roofing options

I have fought roof issues in the past. I learned a lot of lessons the hard way. First I assume that you're sure that you have EPDM. I have seen people who thought they had EPDM and it was TPO. The modern units now have a third kind of rubber roof that's similar to EPDM but, it's not. If you have TPO and try using EPDM products it wont work for very long. If you're real motivated covering the whole roof with a sheet of rubber will fix it. Every other option on an old roof starts the process of playing catch up every couple of years with leaks. Some people have had good success with a five gallon bucket of EPDM liquid rubber. If you go that route watch for air bubbles. They will turn into little funnels and compound any leak. But, the liquid rubber works pretty well, as long as you get the right product. The one gallon cans of stuff that you see at camper supply stores doesn't seem to do well. If you go that route clean the roof really well before you start putting it down. Personally, I would order something else. I really hate to say what I used because it was EPDM liquid rubber that wasn't specifically for RVs although the label said it could be used for RVs. It was thicker than the stuff at the camper stores. It was a two part deal in a five gallon bucket that I mixed with a paint mixer on a drill. It dries really slow but, can be rained on while still wet. I can't really recommend it as a long term fix though. It's rolled on with a paint roller but, it needs to be redone every few years. It's messy, real messy. It will ruin whatever clothes you're wearing when you use it. It sticks forever to anything it touches. But, it's not as good as the sheet rubber, which is a big job because the AC, vents, antennas and such all have to come off to recover the roof with a sheet of EPDM. The 5 gallon bucket was $300.00 bucks. It will never cure in the fridge so, I used most of it on the first cover. Then I put what was left in a container and stored it in the fridge for six months. Then I got back up there and went over it a second time.

That lasted for a few years then it started leaking again in a different place. I learned to get on the roof every few months and cover any suspicious places.