It is that frustratingly corrosive oxidation on your rv.
Rv roof chalky.
Learn how to repair and maintain a rubber rv roof.
It will also prevent water damage into your rv and keep air from escaping to the outside.
I think its important to apply light coats after a coat it was dry and i would go back and start over.
This will only happen on rubber roofs.
If you spot an rv with a rubber roof that looks loose or swollen the owner most probably used petroleum products to clean it.
Fast forward six months down the country road and your new vehicle will look a lot duller chalky and maybe a bit more yellowed than you remember.
As a rubber roof gets older it will get a chalky texture because the rubber is wearing down.
Next clear dry couple of days wash it and treat it.
When i had the chalky roof i cleaned with scrubbing bubbles and a 3m type scrubby on a floor mop.
Iirc a few members have posted the formula to use as a cleaner on roofs.
This chalky layer protects the rubber from degradation.
Nothing to be losing lots of sleep over imo.
The protective layer on an rv rubber roof becomes chalky and wears off slowly over time.
Over time the gel coated fiberglass roof on your rv can become stained with dirt mold and other contaminants.
Epdm is an extremely durable synthetic rubber roofing membrane.
You will also notice white streaks showing up on the radius where the roof ties to the sides of your coach.
Edpm roofs will get chalky over time.
Most likely at some point during an rv rubber roof s life it will need a new rv roof coating.
Sealing and caulking around the rv roof s edges as well as along air conditioners air vents and venting systems will prevent you from spending on hefty repairs.
Epdm roofs start to look chalky and some streaks may appear on the sides after it rains.