While washing our camper today we have noticed what appears to be "mold" spots/areas on the seals on top of the slide-outs. We have noticed it in past years and were able to clean it somewhat at those times but this year has been noticeably worse. We have had a wet, cool spring in MN and now is hot and dry. We did winter in FL this past year also. This year we are having a hard time removing those areas and do not want to use anything that will harm the surface of the seals. Any suggestions out there?
Rubber in slide seals is just like the rubber in tires, in the fact that it rots and crumbles. Every 5-6 years, it is good to completely replace them if at all possible.