This a great product, EPDM Rubber for roofs. It is easy to mix and easy to apply. I had a roof job where a company applied a “torch down” rubber system on my flat roof. They made several critical errors in the application of the torch down. Two added roof repairs and four internal ceiling repairs later and the roof seemed tight. Once you are burned by incompetent roofers you become a cynic quickly. Because of arbitration I got some of my money back. I certainly did not want those bozos back on my roof.
Water stands on my flat roof in various places. I decided to apply a coating of EPDM Rubber over the roof for added measure. So I bought a gallon and applied it in a critical area. It stayed tight and looks great. I waited for several months during the rainy season and had very positive results. I then bought a five gallon pail and applied it to a larger surface. Looks great and adhesion is fabulous. It bonds great with no distortions of bubbles.
I think the easiest thing was that I had a fairly solid surface with which to work. So, cleaning and surface prep seems to be critical. If you prepare the surface well your application and results will be outstanding.
I just ordered two added five gallon buckets and plan to coat the remainder of my roof. I use a short nap roller and it goes on with ease.
I fully recommend this product for roof repairs. Just follow the directions and anyone can do this with completely positive results.