Removing Algae / Fungus from Stained Roof

Ever notice discolored shingles on some roofs? I’ve seen a couple homes in my area with the dark streaks. This post will focus on what causes the dark streaks, how to best remove it, and what you can do to keep if from coming back. What Causes Discolored Shingles? The short answer: fungus. The longer answer: It’s actually a build-up of dead fungus cells. The fungus is an algae (Gloeocapsa...