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built-up roof coating?

1592 Views 5 Replies 4 Participants Last post by  hotrod351
My Tampa home has two flat roof sections (BUR) that are in OK shape, redone in 2009, no leaks, and the rest of the house is regular shingles. One roof section is over a bedroom, while the other is over a patio. I got one quote for $4,000 to redo it in PVC/vinyl.

But what about just getting up there and rolling this coating on it? Seems it would prolong the life as long as I keep a good solid coat on it. Does it work?

Tropi-Cool 4.75 Gal. 887 White 100% Silicone Roof Coating

I have no idea which product to choose - $250 is on the high end of the other products. I do have a bit of standing water when it rains.
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What I tried about 10 years ago was just acrylic coating from homedepot. Over modified sbs roof, small slope, no ponding and 2 coats. It started to peel in about a year and half and became moldy under shaded area. Thank goodness that it was a trial over a small area. I think it even added to faster deterioration of the existing roof, along the joints.
First find out how long those coatings were on the market.
I don't think rolled on coating can compare to manufactured sheets. Rolled on is just not uniform and unless you apply 10 coats (?)- whatever you need to build up to the comparable and uniform thickness, it is just a paint. Each coat is also laminations that may separate and rolled material wouldn't be as durable and weather resistant as plastic or asphalt or rubber. If painted roof was as durable as the regular roof, it will change the world.:smile:
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