Dicor recommends their Fiberglass Clean & Prep product RP-FCP-1. Detailed washing does have to be performed first, and the surface prepped with steel wool or sandpaper to create a slightly abraded surface for the coating to adhere to.
by Camping World – November 03, 2015
Dicor Fiberglass RV Roof Coating protects and beautifies fiberglass and previously coated RV roofs.
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