If you have trees near your house or experience high humidity, you may notice a green film on your siding. This is algae growth. Fortunately, algae will not cause your vinyl siding to decompose, but it can harm it in other ways. If algae grows and flourishes, it will stain your siding green, brown, or black. Preventing this staining is simple. Call the pressure washing experts at Apex Mobile Pressure Washing when you first notice the algae growing on your siding. We will work hard to remove it.