Liquid Roof EPDM Coatings

For me the bad is the 2-3 hour pot time plus the prime coat must not fully cure before applying the top coat. So I need to put on the prime coat, wait until it is tacky but not to tacky and then mix the top coat, spread it, and finish in 2 hours. Pot time on a hot day is 2 hrs. Since 2 hours is the amount of time the manufacturer says it takes to spread on a 30ft RV roof, I will need to hurry and I do not like to hurry when on the roof.

I will look for another product with a longer pot time and less dependent on a primer that must be tacky but not to tacky.

I am looking at Black Jack products.