Stop moss and algae on Seattle roofs with zinc or copper strips, gentle soft-washing, and improved sunlight and drainage

https://trentonqcie977.tearosediner.net/how-winter-ice-dams-leak-into-seattle-homes

Stop moss and algae on Seattle roofs with zinc or copper strips, gentle soft-washing, and improved sunlight and drainage. Pair with balanced attic ventilation and routine gutter cleanouts to prevent regrowth and shingle damage.