What Most Contractors Don't Want You to Know, The Truth About Roof Algae...
Gloeocapsa Magma is a species of algae that causes black streaking and discoloration on asphalt/fiberglass shingles. If left untreated this algae will feed and grow until the entire roof becomes infested. Meanwhile, the roof becomes unsightly, and the algae covers the roof granules, which leaves the shingles unprotected from the sun's UV rays. Without UV protection, a roof will experience premature failure.
If you are one of many homeowners who are thinking about replacing your roof, or know of someone who is, make sure the roof needs replaced.
The resident's of this home thought they needed a new roof and were excited to hear it only needed cleaned, saving them thousands of dollars.