Top critical review
5 people found this helpful
Results far from Marketing literature
on July 29, 2014
Doesn't seem to work in a single application as advertised. I have used on my home and my neighbors. Both times, a single application per specification did not clear the roofs. On mine, there are still spots with algae growing even after 2 applications. On my neighbors home which suffers from black streaks, I applied a VERY heavy coat last fall and after 4 months the stains were still there. They were actually worse for the first 2. I called the company and they told me sometimes it takes longer....well, it's almost a year later and the streaks are still on their roof.
UPDATE: Company stands behind it's product. While I wasn't totally please with the results, I contacted the company 1 year later, provided my Amazon receipt and quickly received a full refund. Reputable company which is difficult to find these days.