1. Is That Mold On My Roof? Limestone filler in asphalt shingles is hospitable to gloeocapsa magma, an unsightly black mold that, once it gets hold, will continue to grow and stain your roof.
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1. Is That Mold On My Roof? Limestone filler in asphalt shingles is hospitable to gloeocapsa magma, an unsightly black mold that, once it gets hold, will continue to grow and stain your roof.
Read MoreSubscribe to American Metal Roofs's Blog
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