Heng's 45128-4 White Acrylic Roof Coating

First of all, the price on-line is about 1/3 cheaper than I can find locally. Definite plus! The material is great once it sets, but you might consider carefully how you handle it to apply. I bought a large stiff brush, which helped, but I'd also recommend a slim trowel or spatula to apply it, as the consistency is like stiff oatmeal. Also, as I used this on the roof of an RV, I applied it only to the seams of the fixtures up there, and a gallon was more than enough. I'm hoping it survives in the can if I need more in a year or two!

seams to be ok we will see how long it last

Gloppy like oatmeal, dries to a flex sheen