Sealing Surface Cracks on a Fiberglass RV Roof

[Gyrophoenix]

Anyone have a recommendation for a specific brand of sealant to put on these surface cracks? There's no leakage, as the fiberglass is over 1/4 inch thick. But I'd like to seal them up anyway.

Thanks.

 

[TheBar]

I would not use typical EPDM coatings over fiberglass. I would think new gelcoat or acrylic paint is a longer lasting solution.

 

[Gary RV_Wizard]

I would not be afraid to coat with something like Henry's Tropi-cool on it, but something like Dicor Fiberglass Roof Coat (a high grade paint) is much easier. A gallon of the Dicor (or a similar marine deck paint) would do the job nicely. It will take you longer to clean the roof thoroughly than to paint it.

 

[Kirk]

Are those really cracks? It looks like the roof has been scratched by something in two different directions.

Dicor Fiberglass RV Roof Coating on Amazon

 

[udidwht]

RV Roof Magic will work great on fiberglass. And last a long time 18-20 years (1 coat).

 

[Gyrophoenix]

Are those really cracks? It looks like the roof has been scratched by something in two different directions.

Dicor Fiberglass RV Roof Coating on Amazon

Yes, they're very thin surface cracks. I'm going to spray on a coat of clear Guerilla sealant on the area (masked all around it to avoid overspray). That should be the easiest and efficient way to take care of it.

 

[SargeW]

Don't spare the dime on this maintenance repair. I would go with the best option available as if it ever fails, the results would be devastating.

 

[Kirk]

. I'm going to spray on a coat of clear Guerilla sealant on the area

Let us know how it works out, if you will.

 

[John From Detroit]

I was thinking something like Snow Coat (Snow roof)

https://www.lowes.com/pd/Snow-Roof-Systems-Reflective-Roof-Coatings/3011775

As I recall it remains flexible or a paint on "Rubber roof" product. (Flex seal white on the low quality end, I'm sure there are better products)