How Shade Affects Algae Growth on Siding: Moisture Fixes
Shade usually increases algae growth on siding because it reduces solar heating and slows evaporation, leaving the surface damp for longer periods. Algae still need light for photosynthesis, so shade does not create algae by itself; the strongest growth occurs where shade combines with repeated wetting, humid air, poor airflow, surface dust, and a textured […]