Community Forums

McIntosh · 12-11-2018, 03:44 PM

I have a 1995 Monaco Dynasty with a one piece fiberglass roof. It has the normal stress cracking that goes with age. Can anybody recommend a good sealer for the fiberglass roof.
Thanks

docj · 12-11-2018, 03:46 PM

Used this >5 years ago and the roof still looks great: https://smile.amazon.com/Dicor-RPFRC...v+roof+coating

cavie · 12-11-2018, 03:49 PM

this is what I used 3 years ago.
products

dix39 · 12-11-2018, 04:44 PM

Did you folks who coated their roof have cracks too before coating it? How long has been since the roof was coated, and if there were cracks, have they reappeared? If not that would be a much easier way to go than what I'm doing.

I went to a fiberglass repair guy who said the fiberglass was compromised where the cracks were and to grind through the gelcoat to the glass to see if there dark (brown) streaks below the cracks. I did, and there were, so on his advice I'm grinding across each crack and glassing in a piece of mat about 6" wide for the length of the crack.

It would sure be a lot easier to coat it if that would work, but the glass guy said if the compromised area wasn't repaired it would just crack again.

Steve

docj · 12-11-2018, 05:10 PM

Quote:

Originally Posted by dix39

Did you folks who coated their roof have cracks too before coating it? How long has been since the roof was coated, and if there were cracks, have they reappeared? If not that would be a much easier way to go than what I'm doing.

My roof had "fine" cracks, nothing significant. AFAIK they haven't reappeared.

bwanna2016 · 12-11-2018, 05:35 PM

the roof coating will naturally chalk. I painted mine with rustoleum topside paint. $17.00 per quart and you can buy it at any hardware store that sells rustoleum products. wash the roof, use a non aggressive nylon sanding pad to remove extra dirt and chalking. rinse of the residue. apply at least 2 thin coats and you are done. took less than 3 quarts and covered all the hairline fiberglass cracks very well on a 33 foot motorhome. very simple process. if your roof has deep cracks in the fiberglass, then it is not a coating issue.

veraken · 12-12-2018, 06:04 AM

Here is a write-up from the Beaver Ambassador Club

Protecting Your RV’s Roof – RV Roof Coating | Beaver Ambassador Club

dix39 · 12-12-2018, 10:45 AM

The cracks in my roof go all the way through the gel coat to the fiberglass and when the fiberglass is uncovered there is a visible line where it was "bent". The fiberglass is not separated, but just has a line in it where it was bent. Are the "fine" cracks like this or just on the surface of the gelcoat/paint?

Thanks.

Steve

2 Stroker · 12-12-2018, 12:19 PM

Quote:

Originally Posted by veraken

Here is a write-up from the Beaver Ambassador Club

Protecting Your RV’s Roof – RV Roof Coating | Beaver Ambassador Club

I have everything to do my roof this spring. I'm getting tired of the fiberglass chalking and running down the side of my coach. I have waxed it, last about 2 years.

2 stroker

CountryB · 12-12-2018, 01:13 PM

I've been thinking about recoating my top this spring too. After researching this a while, and I think I will go with one of the newer marine topside coatings.

The modern two-part top coats are very durable. This one is recommended by Boatworks (easy to apply with a roller, UV resistant, and high gloss. The drawback is that a gallon cost $260 (1 gallon will cover 400 sq-ft at a 2 mil thickness).

Polyurethane Topcoat | EMC2 Quantum Paint