Great (old but still relevant) article explaining why we soft wash (low pressure) roofs
Black streaks running down your roof aren’t a sign that the asphalt shingles are dissolving or that you need a new roof. Rather, you have roof algae. The organisms arrive on the rooftop as either spores or clumps of cells. If they land on the north side of the roof, where the sun is less harsh …
Great (old but still relevant) article explaining why we soft wash (low pressure) roofs Read More »