You can probably use a power washer although the vinyl siding institute recommends checking with the manufacturer first.
Black mildew on vinyl siding.
Malfunctioning gutters running water problems and malfunctioning or misplaced sprinklers can all promote the growth.
However if you ve got valuable landscaping or trees nearby.
Even though vinyl is extremely hardy and durable as an exterior siding for your home mildew will form on it in areas that are in the shade or where the vinyl is exposed to moisture on an ongoing basis.
Chlorine can also damage foliage and stain clothing.
Oxygen bleach hydrogen peroxide.
If you have problems with mold and mildew on your vinyl siding you may want to experiment with spraying a copper sulfate on the siding.
Choose the best cleaning solution.
Mildew forms best in shady moist areas.
To prevent the development of mold or mildew on the exterior of your vinyl it is important that you understand why and where it is likely to grow.
It appears to make mildew vanish but on porous surfaces such as wood or vinyl siding chlorine evaporates too quickly to get to the fungi s roots guaranteeing regrowth.