[Mikendebbie]

For what it's worth - I have been working for commercial general contractors for 40 years. I have never seen a "roof coating" called for on a commercial building...schools, churches, car dealerships, office buildings, chip plants, data centers...never. That doesn't mean that roof coating is non-existent...just that if it was a common occurrence I would most likely have seen it used somewhere along the way.

That being said - about 15 years ago a neighbor moved away and he gave me some cans of paint and other stuff he did not want to move. One of the cans was some roof coating. I slathered it over my Alpenlite roof at the time. It made it pretty and white, but don't know if it helped anything besides the color.