BEEST Multi-Purpose Primer - Gray, 1 Gallon Covers up to 250 Sq Ft| Liquid Rubber Deck Coating - Elastomeric Roof Coating - Water-Based, High-Adhesion Bonding Primer for Concrete, Metal, Wood, TPO

Used this on the roof of a large enclosed 2-cruiser motorcycle trailer. Bought their "wash," primer, and tape, all of which I recommend, since you can't use silicon on the seams. Followed the directions exactly, and re-coated (with drying time in between) several times, using up the entire can. It's working well, and I'm happy with the purchase. Depending on your humidity, this could take anywhere from a day to a weekend.

Very good customer service from Christina at Petra Tools. I’m very satisfied with my experience.

Customer service is great

The primer went on smoothly. Priming a white RV roof so the gray color made it easy to see areas I may have missed.

Outstanding product. Easy to use and hopefully it will last. Would purchase again when needed.

Went on nice and sealed well

we bought the Beest primer. Then we bought a 3.5 gallon bucket rubber roof sealant. Our RV trailer is 24ft long. we did 3 coats and still have enough left for another. i would say you need 1 gallon per coat on 24ft. and we put the third coat on pretty thick. we of course removed the max air vents. this we already had eterna bond tape on all our roof seams. we painted right over all of it including all the caulking. the second photo is after the second coat of roof sealant. and as you can see the primer still shows through just a bit. after the third coat it’s beautiful snowy white. i’m hoping this is a good 10 year seal!

Easy to apply, good quality, after two coatsOf sealant it is a good thicknesses, and it looks great. Also did make the camper noticeably cooler inside. I used 1 can of primer and 2 cans of sealant on my 18ft campers roof. Definitely make sure the weather forecast isn’t calling for rain for a few days!!