What is the best thing to coat the top of a motorhome with to prevent leaks?

RV roof leaks are annoying and frustrating. Luckily there is a product out there that you can use to permanently repair the leaks in your RV roof without having to replace the whole rubber roof. The product is called RV Roof Magic. RV Roof Magic not only waterproofs the roof, it blocks UV-rays and it is also not affected by ponding or standing water.