Those dark streaks on your asphalt shingles aren't just dirt — they're a type of algae (Gloeocapsa magma) that feeds on the limestone filler in shingles and can shorten your roof's lifespan...if left untreated. Our soft-wash system uses low pressure and a bleach-based cleaning solution to kill the algae at the root without lifting or damaging shingles. We rinse thoroughly and protect your landscaping with dilution and pre-wetting, leaving your roof clean, bright, and protected.