I was trying to look up GAF warranty issues and I was surprised to find out that according to GAF we are all misinformed about the reason for the black streaks mold and algae growth.
Mainly aesthetics...hummmmm Lack of granules on a 10 year old roof with a 30 year warranty...why? I did not hear the word limestone & I was thinking limestone?
It's a shingle company trying to sell you on a new roof. Sure they are going to say that algae, mold, fungus, moss, etc growth is mainly aesthetics. Notice they didn't offer any advice on cleaning the roof. They just want to homeowner to let the "aesthetic" condition remain until they have the granule loss. Then they can replace the roof.
It's our job to educate the homeowner to the problems that can occur when they let "aesthetic" conditions go unchecked.
I have always wanted to nail Joanne Liebler Seriously, they can't admit that Algae damages shingles, think about it ? If they did, when their Algae Resistant Shingles get infested, customers will Sue them for loss of roof life !
I have always said that there is more misinformation out there than true education.
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Matthew C Perry General Manager Callahan Pro Wash Professional Exterior Cleaning Services Roof Cleaning, Pressure Washing, Paver Cleaning and Restoration 813-727-5161 callahanprowash.gmail.com