How Trees Contribute to Roof Algae Growth: Causes and Fixes
Trees contribute to roof algae growth by shading roofing, reducing wind-driven drying, dropping moisture-holding debris, and helping airborne or waterborne cells reach shingles. Trees do not create Gloeocapsa magma, the cyanobacterium commonly called roof algae, but nearby canopies can extend surface wetness long enough for colonies to establish and form dark runoff streaks. Key Facts […]