If only a part of your siding is affected by mold and mildew you can choose not to wash the entire surface.
Remove green mold on siding.
Mold removal usually requires some scrubbing and the best tool to use is a stiff bristle natural fiber scrub brush.
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You can just scrub the stained area with the cleaning solution and rinse it using a water hose.
Use a scrub brush to apply to the mixture directly onto the green mold stain and allow it to sit for about 20 minutes.
To do what you can to prevent the accumulation of mold and mildew on your siding follow these tips.
Test a small area of the green stains to be sure that the tsp solution will remove the stains.
Chlorine can also damage foliage and stain clothing.
Let the solution dry for one hour then wipe down the surface with a moistened cloth followed by a dry towel.
This means that the stains are likely mold and will need to be cleaned with a stronger solution.
To make this simple diy mold and mildew cleaner mix just enough water and oxygen bleach in a bucket or plastic container to form a paste.
Oxygen bleach hydrogen peroxide.
Use the brush to scrub away the loosened mold.
Scrub with moderate pressure being careful not to push too hard against the flexible vinyl which can break.
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.
Combine equal parts vinegar and warm water in a spray bottle and spritz this solution on the mold.
You can rent or borrow another power washer or pump sprayer so you can keep one filled with the cleaning solution and the other one with water.
As with any type of exterior finish vinyl siding can become dirty over time due to an accumulation of dirt and grime most of which can be removed with a simple spray of the hose but if you notice the appearance of green stains during your inspection you ll need to take a different approach.
As the adage goes an ounce of prevention is worth a pound of cure preventing damage can save you time money and effort in having to remove mold and mildew down the road.