Before using a pressure washer check to see if it is recommended by the manufacturer for cleaning use.
How to clean mold from siding.
Oxygen bleach hydrogen peroxide.
Start with the most noticeable and difficult spots first to loosen them up.
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.
Vinegar solution 30 vinegar to 70 water simple green.
This can be done by either the homeowner or a professional contractor.
Be careful when using chemicals if you want to use a more potent cleaning agent to eliminate the stains.
Allow the siding to dry and inspect it again to see if any mold remains.
Light to medium staining.
Chlorine can also damage foliage and stain clothing.
Depending on how much mold or mildew is on the siding the following cleaning options can make quick work of the unwelcome fungi.
Since you can easily confuse mildew for dirt make sure you examine the panels to see what kind of spots you have on them.
Scrub the spots on the siding and let the solution soak in for a few minutes.
Step 7 use a spray bottle to apply the beach water solution to any remaining mold spots.
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.
Rinse off the siding with a hose and water.
The next step in eradicating mold on siding is typically cleaning the siding with a bleach solution which is either sprayed or brushed onto the affected areas.
How to clean mold and mildew off of composite siding.