Damp conditions promote algae and mildew on roofs and siding. The dark streaks on roofs are often the result of bacteria feeding on limestone, accelerating wear and raising cooling costs. Heavy rains and freeze-thaw cycles add extra pressure to materials. Westerville House Washing Services Algae, mildew, and moss stain surfaces and hold moisture. Rust stains concrete and brick. Road salt …
Pressure Washing Garage Floors in Westerville








