Yearly cleaning of the exterior paint of a home or building can not only keep the exterior looking nice but also prevent damage from surface dirt and debris. Cleaning the exterior is also a necessary first step when applying a new coat of paint. When cleaning the exterior paint, you want to ensure that you remove all debris and kill molds and fungi without damaging the surface.
Step 1
Wash the exterior of the painted building or house in the hottest and driest (low humidity) part of the summer. This helps the area dry quickly and avoids mildew and mold growth.
Step 2
Use an oxygen bleach solution in a garden sprayer (such as ones used to fertilize gardens) attached to garden hose to treat any mold, mildew and dirt on the paint. With a filled garden sprayer attached to a garden hose, spray the solution to the areas that need treatment and let it sit for about five minutes.
Step 3
Scrub the exterior paint with a brush attachment used to clean cars or RVs and soapy water. These are soft enough that the paint will not be damaged while cleaning. Use a solution of dishwashing soap and water as per the label’s instructions to clean the paint.
Step 4
Rinse the exterior paint with a spay nozzle attached to a garden hose.
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