Just m2cw.... I like using the PROTECTAL brand Cleaner and Sealer on my roof. It is a bit more difficult to use though, because it's very strong and you can NOT allow it to rinse down the sides of the trailer, or it will streak it. But, once you catch on as to a good method, it REALLY cleans well, and with little mess. The Sealer is just as easy to use as the other brands. I'm sure that there are a lot of good quality cleaners and sealers too, so just check out how they each are applied. I've found that I only need to use it twice a year, too. (But I do keep ours covered in the winter months while in storage). Best of luck with what works for YOU!
