Just as long as the product does not contain any petroleum by-products it should help reduce the effects of the weather. As the roof material weathers it will chalk and rain will wash it down the sides of the RV, leaving streaks and a dull appearance. Black streaks are merely dirt that settled on the roof and ran down the sides. A good black streak remover
will help keep your RV clean and shiny.
Dicor, who makes the EPDM roof material, says a simple washing 2X a year is all that is required to make material last the entire warranty period of 10-12 years, but your treatment should extend that, even with outside storage.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"