Why are there White Stains on the side of my RV?

How To Clean And Repair Your RV's Rubber Roof | The Fun ...


Tue, 09 Sep 2008 10:26:15 -0700

RV roofs are typically made from Ethylene Propylene Diene Monomer (EPDM). Over time, your RV roof will develop a chalky surface which is totally normal.

This chalking will only affect about 10% of the roof’s original thickness. Regular cleaning will help reduce the amount of chalk buildup and help prevent the white stains seen on the sides of many older RVs.

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