Your standard household whitener.
Best way to remove mold and mildew from vinyl siding.
8 apply a solution of trisodium phosphate dishwashing liquid oxygen bleach and water.
It will effectively remove mold and mildew from vinyl siding.
Avoid using chlorine bleach because it is harmful to vegetation.
A chemical solution is necessary.
Oxygen bleach is another option to consider.
If you prefer a commercial product mix one 1 part bleach with four 4 parts water.
On top of that you need a vinyl siding cleaner that fits with your pressure washer and does the cleaning with ease.
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.
A popular homemade option is to mix three 3 parts distilled white vinegar with seven 7 parts water in a bucket.
Test on a small part before applying it everywhere.