here is some before and after spraying, I don't really think is Gloeocapsa Magma...
What do you guys think ?
it did have some G.M. on other sections and it came right off but, this was really hard to removed even after several rains it still shows a black shadow on the shingles where the algae was!
To me it does look like GM. In some areas of the roof it can be more predominant and you may need several coatings, but just looking at the pics those streaks do look like GM in my opinion.
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Mike Lacey Louisville, KY Green Goose Roof & Exterior Cleaning LLC
it looks like GM to me also,for it to be granule loss all in that area would be odd, unless some one tried removing this area with a PW.... shouold be brown in color after treating the effected area.... how fresh was your Sh???
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Elite Roof Cleaners Roof Cleaning Missouri & Kansas City
I had the same problem today on a cleaning. Looks like a shadow in spots. I even double coated. My SH was strong. I get 15% from my supplier and they get fresh every couple days.
I am waiting for rain tomorrow and see what happens?
The funny part is where these shadows show up were not even the heavy stained areas!
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