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.
Best mix for removing mildew from vinyl siding.
A chemical solution is necessary.
1 2 cup trisodium phosphate tsp 1 3 cup powdered laundry detergent.
A pressure washer will definitely give a better point in cleaning.
Recipe homemade mold cleaner for siding.
Hard stubborn mildew or algae is tough to remove with only pressure washing.
When mildew gains a foothold homeowners often turn to diluted chlorine bleach sodium hypochlorite a k a.
1 quart household chlorine bleach.
An alternative for light mold and mildew is a solution consisting of 30 percent vinegar and 70 percent water or about 1 1 2 cups of vinegar per gallon of water.
Remove mildew from vinyl siding a slight variation on this tactic is to use a regular household cleaner instead of tsp.
Wet and forget moss mold mildew algae stain remover this bleach free wet and forget formula harnesses the power of ammonium chloride to eliminate mold mildew moss and algae.
Both bleach and vinegar can harm plants and foliage so if that is a concern mix 1 cup of oxygen bleach per gallon of water instead.
On top of that you need a vinyl siding cleaner that fits with your pressure washer and does the cleaning with ease.