Fiberglass roof coating

If you are trying to deal with oxidation, once cleaned off, ZEP floor polish works well for a protectorant. Typically cleaning off the old oxidation leaves a porous surface that will collect dirt quickly. The floor polish fill in the pores and seal it, so it is much easier to clean. 2 coats will seal it pretty well, 4 coats makes it shine if you need that.

Fiberglass gel coat will oxidize in the Florida sun over time. I used TSP to wash off the oxidization, completely dried the surface and applied Petit one part epoxy, gloss white. It totally renewed the roof. Has maintained that gloss for 3 years now. 2 quarts to do a 36 foot roof

I have read a lot about Bus Kote. Might want to check that out.

I agree with the concensus....unless you have some roof damage that needs repaired, keeping a fiberglass roof clean followed by a periodic application of wax, polish, 303 protectant, etc. is usually sufficient.

I did see a post where one fellow used a roller to coat his fiberglass roof with urethane clear coat. It look really nice and using a roller left some texture to it so it would not be so slippery when walking on the roof.

I re-coated my roof with the Dicor Fiberglass coating just to give it a better appearance. No one really sees it but me, but I followed the directions and it looks great.......doesn't stain from the leaves and no more chalking down sides......

As long as it doesn't get stress cracks for poor design, I can't imagine why one would need to coat it. Same here with old boats that have been in the sum for 30 years or more. The glass on the nose of my coach has been in the sun for 30 years, and while the paint is getting tired, the fiberglass is just fine.

GENECOP wrote:

MaverickBBD wrote:
I am probably missing something, but why would you want to do that? Does the fiberglass need to be repaired?

That is one of the considerations of my choosing a fiberglass roof material is that I wouldn't have to "re-coat" the surface.

Nothing is forever, my roof is one big piece of fiberglass, five years old now starting to show signs of wear... My MH is outside year round, always was, unless you have inside storage and hardly use your RV you have to treat and maintain everything....That's why Dicor and others make so many good products these days...

mine was outside for 14 years, no issues. my fiberglass boats are outside getting a double dose of sun with no issues.
I see no need to pretty up a roof myself. that may be needed with TPO or EPDM.
bumpy

Well,
If the OP gets back with an answer as to "Why" he'd like to coat his fiberglass roof, then maybe it can be determined as to the possible "best" coating/repair/sealant/etc. Our coach, a 2004 Itasca Horizon, 36GD with the C-7 330 CAT, has almost 52,000 miles on it. It originated on the East coast and, has been all around the west coast and mid states a few times. The roof, as most Winnies and Itascas are, fiberglass. And, it's in flawless condition. Yes, when it's not in use, it's under a drive under cover.

I can explain what it took to get it to the condition its in but, not now. Some of you have seen it. It's like a mirror up there. And, there's no "ZEP" or "RED MAX PRO" up there. If you like those products on your roof, be my guest. It's yours so, you can do as you see best. I wax mine about once a year, maybe twice, depending on how I feel. It gets a good washing with soap and deionized water, about once a month, along with the rest of the coach.

So, my point is, if they're taken care of, fiberglass that is, and until the OP gets back here with a reason, I see no reason to "coat" a fiberglass roof with anything.

But, if for some odd reason, that roof was in bad condition, enough to cause worry for wet weather conditions, I'd take it so an RV repair center near us called San Diego RV Center and have the "Rhino" coating applied. It would then be a roof guaranteed against leaks for 30 years. But, that's just my thoughts.
Scott

campguy3040 wrote:
Clean your roof as good as possible. Lightly scrub stains with Bar Keepers Friend , rinse, let dry and apply ZEP Floor Shine availabe from Lowes. Apply with cloth mop or sponge roller. Let dry at least 30 mins and recoat 1 or 2 more times. The roof will shine and be sealed as well. Keeping it clean will be a lot easier. Recoat yearly if needed.

But if you have any cracks, there is no guarantee that the Zep will fill them like a commercial fiberglass roof coating would.

Clean your roof as good as possible. Lightly scrub stains with Bar Keepers Friend , rinse, let dry and apply ZEP Floor Shine availabe from Lowes. Apply with cloth mop or sponge roller. Let dry at least 30 mins and recoat 1 or 2 more times. The roof will shine and be sealed as well. Keeping it clean will be a lot easier. Recoat yearly if needed.

GENECOP wrote:

MaverickBBD wrote:
I am probably missing something, but why would you want to do that? Does the fiberglass need to be repaired?

That is one of the considerations of my choosing a fiberglass roof material is that I wouldn't have to "re-coat" the surface.

Nothing is forever, my roof is one big piece of fiberglass, five years old now starting to show signs of wear... My MH is outside year round, always was, unless you have inside storage and hardly use your RV you have to treat and maintain everything....That's why Dicor and others make so many good products these days...

and mine is 20 years old and has only ever had one crack to repair. Stored outside. Wax it yearly with a good fiberglass marine wax.
But you could coat it with Dicor Fiberglass RV Roof Coating. Or use a urethane, with crushed glass, coating.