How to Remove Exterior Mildew Stains

Make sure to remove any mildew stains before you paint your home's exterior.

For Best Results:

Make sure to dampen the areas to be cleaned prior to applying the cleaning solution

Allow sufficient time for the cleaning solution to work (10 - 15 minutes).

Step 1
Using a garden hose or a pressure washer, wet the mildewed area with water.

Step 2

Using a pump sprayer, apply BEHR PREMIUM® All-In-One Wood Cleaner to the mildewed area.

Step 3

Reapply the cleaner as needed to keep the surface wet. Allow the solution to remain on the surface for 10-15 minutes. Scrubbing may be required on severely stained surfaces.

Step 4

Thoroughly rinse the surface with water. Allow it to dry.

Suggested Tools & Supplies
  • Bucket
  • Hose
  • Ladder
  • Pressure Washer
  • Protective Apparel
  • Pump Sprayer
  • Rags
  • Scrub Brush
More Exterior How-tos
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