Choose a liquid concentrate such as scotts outdoor cleaner plus oxiclean 9 99 per gallon.
Best way to remove mildew from cedar siding.
The oxygen bleach comes as a granular powder that mixes with water.
It s also safe for plants that may inadvertently get dripped upon during the cleaning process.
To remove mildew from wood siding hardi plan or stucco use the following solution.
The safe and effective way to clean the wood is oxygen bleach.
When it is time to refinish clean off the mildew with a mild bleach solution oxygen bleach is preferred or commercial mildew remover.
Re staining does not solve a mildew problem.
Scotts which is easy to use in a garden sprayer or pressure washer.
Less volatile than chlorine it removes mildew on and below the surface as well as algae dirt and oxidized paint but won t harm plants or clothing.
1 quart household chlorine bleach must be fresh 3 quarts warm water.
1 3 cup all purpose laundry detergent.
Vinegar solution 30 vinegar to 70 water simple green.
An alkaline cleaner such as washing soda or a cleaner containing trisodium phosphate can be added for extra cleaning.
I used double the concentration on mine because i got tired of scrubbing.