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This lovely home in McLean VA was in desperate need of a professional roof cleaning. In addition to a substantial algae colony causing the dark roof stains, it was also severely infested with lichen.  By using the roof cleaning solution approved by the shingle manufacturers, the algae stains on this McLean home were safely removed with instant, visible results.  (In the after picture below, the roof was still wet from the cleaning treatment.)

The lichen, as well as a few small areas of moss will slowly release over time post roof treatment.  Any instant mechanical removal, via agitation or otherwise, is very damaging to shingles and should be avoided.

The roof cleaning for this McLean estate was completed via American-ProTech's 42' hydraulic lift.  We're the only roof cleaning company in the region that brings such specialty equipment to every job.

If your McLean home has unsightly streaks or stains on the roof, give us a call for a no obligation consultation and a quote.  You'll be glad that you did.