Warranty Claims for Roof Shingles – Algae
One solution is to wash the roof with a chemical wash. However you need to take proper precautions to avoid damaging the roof further. In addition there is the cost of the chemical and finding someone who will go up on the roof to apply the chemical.
Our roof is 14 years old and it supposedly has another 11 years to go. They were 25 year shingles. The shingles look physically ok, it is just this black coloring on the roof in specific areas.
We took pictures, had them printed and filled in this long report. I think there is less than a 10% chance that the shingle company will do anything about this.
Update: about two months later, we received a replay. Sure enough they denied the claim and indicated that this is a common mold that forms on many roofs. We have since noticed that many homes in our area have the same problem.
There is basically nothing we can do at this point, so I guess we just live with it.
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