How to Restore the Gel Coat on a RV's Fiberglass Body

by Christopher Jackson
Christopher Jackson, Elepent Scribbles

After many years outdoors, an RV's fiberglass outer skin will inevitably start to look a little bit faded. As it ages, fiberglass oxidizes and loses its gloss, regardless of waxing.

Fortunately, the fiberglass used in boat hulls doesn't differ much from that used on motorhomes, so fiberglass-restoration products designed for the nautical industry work just as well on land-based vehicles. Products like PoliGlow and NewGlass2 can bring the shine back to an older RV. The process is similar to varnishing a floor and the primary ingredient is elbow grease.

Step 1

Clean the exterior of the RV with an aggressive cleanser, making sure that any blemishes are removed. PoliGlow, NewGlass2 and others offer branded cleansers for this purpose. Allow the vehicle to dry.

Step 2

Working in sections, apply the "varnish" with a sponge pad. Wipe in one direction only; do not "brush" the material. Allow it to dry for 5-10 minutes. The first coat of the restorative material smoothes over the oxidization in the fiberglass. Use a ladder or extension pole to reach the upper section of the RV.

Step 3

As soon as the area is dry, apply another coat and repeat. Streaks will fade as the restorative dries. After four or five coats, your RV's fiberglass will begin to shine again.

Maintain the shine with regular washings. Additional coats can be applied annually.

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