Hello, I have an existing gravel roof that I want to repair. There is
a big area that is flat. I just got a quote from a roofer to repair
the whole roof where he would lay two coats of fiberglass membrane
with hot tar and then a granule surfaced roofing sheet to protect the
roof. He would guarantee this job for 10 years. My question is if
instead of doing that, I can just remove all the gravel myself (since
it is VERY loose) and then just coat the entire roof with one of those
elastomeric roof coatings like this one:

http://www.koolseal.com

And not worry about the roof for a good 10 years. Does anyone have
any suggestions if this would be a good idea? Or if I was to hire a
roofing contractor, what would be the best choice to repair and roof
that has a big area that is flat?

Thanks before hand,
Adiel