The safe and effective way to clean the wood is oxygen bleach.
Oxygen bleach to clean cedar siding.
Allow it to sit for 15 minutes then rinse it off thoroughly.
Oxygen bleach removes algae mold and mildew from cedar restoring much of the wood s natural beauty.
Oxygen bleach is non damaging both chlorine and oxygen bleach have great anti microbial qualities that allows them to clean and disinfect the surfaces they are applied to.
Unfortunately even in small amounts chlorine bleach eats away at the material it is applied to and in the case of your cedar siding it can weaken your wood s fibers.
It is non toxic to trees and vegetation and will not remove natural color from the siding.
You can dry wood siding using a dehumidifier or a space.
If necessary a stiff bristle non metallic brush can be used.
Follow this by spraying another coat of the oxy bleach onto the darker stains.
Make any necessary repairs then clean the cedar with warm water and phosphate free soap.
Put on a pair of heavy duty rubber gloves because you are about to deal with bleach which can prove highly irritable.
When you add a bit of this sodium percarbonate or sp powder to water it reacts by releasing the trapped oxygen from the peroxide.
To safely remove stubborn stains dissolve the oxiclean in water according to package directions and apply the solution to the wood siding.
Water any grass.
How to clean cedar siding with bleach 1.
Dry the siding first if you notice signs of mold growth.
The oxygen bleach comes as a granular powder that mixes with water.
Chlorine bleach weakens wood fibers increasing the wear and damage to the wood.
Spray the oxygen bleach mixture onto the shingles.
It s also safe for plants that may inadvertently get dripped upon during the cleaning process.
To make oxygen bleach cleaners hydrogen peroxide is added to soda ash to produce a granular powder known as sodium percarbonate.