thinking rv roof coatings

[Blacktank]

I painted the fiberglass hightop on my van with an elastomeric roof paint about 5 years ago. I scuffed it real good before putting on two coats. It was pretty rubbery feeling for almost a week till cured out. It has held up well but the sheen has turned to flat white now. Still looks good though and I'm happy with it. It was in the $50/gallon range and did two coats with over a quart left over. Henry's was the brand if I remember right and got it at HDepot.

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i found the elastomeric but henry's says not to use it for rv's,look at the q&a https://www.homedepot.com/p/Henry-587-Du.../202091035

they recommend this https://www.homedepot.com/p/Henry-887-Tropicool-0-90-Gal-White-100-Silicone-Reflective-Roof-Coating-HE887HS142/206029976?MERCH=REC-_-pip_alternatives-_-202091035-_-206029976-_-N&