A roof soft wash in Leland NC costs a few hundred dollars and stops the algae that shortens shingle life, while a replacement runs $9,000 to $18,000. Here is when cleaning is worth it and when it is not.

Black algae is a cyanobacteria that feeds on asphalt shingles, and the rain and humidity in Brunswick County let it thrive. Here is how to remove it safely and keep it from coming back.

Black streaks on your Wilmington NC roof are Gloeocapsa magma, an algae feeding on your asphalt shingles. Here is what causes it, the damage it does, and how soft washing safely removes it.