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Originally Posted by Baz
My 2 car garage has a flat roof. When I bought the house in '96 it was tar and gravel. About 10 years ago we ripped off the old - roof plywood and all - and replaced with peel and stick roll roofing.
Been toying around with adding climate control in there but not quite ready for that now. In the meantime it gets hot inside. I was looking at various roof treatments to help with temp. modification and found one that had really good reviews and sounded like the perfect material for my application.
It's by Black Jack and is a white silicone coating material. I bought a 5 gal. container of it from Lowes about a month or so ago so am now getting ready to do the job.
This morning, in preparation, I power washed the roof. I didn't realize how much crud had accumulated in the 10 years it's been up! Thanks goodness I had my Ryobi surface cleaner attachment which saved me a TON of time and effort. It still took a while to do but I feel much better knowing I went the extra mile to give the coating the best chance for adhesion and durability over time.
I will post followup pics after the coating is done. Not sure when I will do that - maybe the weekend. Maybe tomorrow. Depends on the weather.
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Like I've said before, I have a "glacial white," elastomeric coating on my roof. Underneath is a black, flash down, bituminous membrane. After about 10 AM, the membrane would register mid to high 170's. After the elastomeric coating it registered 100F to 110F. The coating wears enough after a few years to need a cleaning and recoating. I also get up on the roof periodically and hose the dirt off. I have the same attachment for my pressure washer, I might give it a try next time I recoat it, although warm water with Dove, a scrub brush and rinse off has worked fine in the past.