Trisodiium phosphate per two gallons of water.
Best way to remove algae from vinyl siding.
Take care to get as little soap as possible beneath the siding.
If it does not mix a solution of one part chlorine bleach to four parts water to clean the siding.
Mildew and algae on vinyl and wood use a solution made of oxygen bleach not chlorine bleach mixed with water.
Step 5 rinse the cleaned sections of siding with a garden hose as you go to prevent the soap from drying on the vinyl.
Oxygen bleach hydrogen peroxide.
Refer to the label on the trisodium phosphate for specific mixing instructions.
Chlorine can also damage foliage and stain clothing.
Stains on wood cleanse with mild detergent mixed with water.
Water stains remove with a mild detergent and water.
Fill a bucket with a solution of 30 percent white vinegar and 70 percent warm water.
Spray the siding with water from the garden hose to remove loose dirt and debris.
A chemical solution is necessary.
Use a brush to scrub the algae from the surface of the vinyl siding.
Hard stubborn mildew or algae is tough to remove with only pressure washing.
A pressure washer will definitely give a better point in cleaning.
According to the vinyl siding institute the best way is to use a soft cloth or an ordinary long handled soft bristle brush.
Step 2 dip a long handled soft bristled scrub brush into the cleaning solution.
Generally use lb.
Test a small area of the green stains to be sure that the tsp solution will remove the stains.
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.
On top of that you need a vinyl siding cleaner that fits with your pressure washer and does the cleaning with ease.