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How to Clean Grease Spots on Vinyl Siding

April Dowling

Vinyl siding is recognized for its durability, weather resistance and style diversity. It is not, however, impervious to grease spots from barbecue grills and automotive fluids. Grease spots can ruin the appearance of vinyl siding and make home exteriors appear dingy. Oily stains become more difficult to clean the longer they persist on vinyl siding. Promptly remove grease spots to preserve the siding's overall aesthetic appeal. Clean grease spots on vinyl siding using basic techniques, not harmful chemicals that can damage the siding.

Remove grease from siding using basic supplies.
  1. Attach a spray nozzle to a garden hose and rinse the siding with water to wash off loose grime. Always spray downward or at eye level to prevent water from collecting behind the siding.

  2. Lay a plastic dropcloth at the base of the siding to protect the vegetation from runoff.

  3. Combine 2 tbsp. of liquid dish soap with 1 gallon of warm water in a clean plastic bucket. Thoroughly dissolve the soap in the water.

  4. Clean the grease spots with the soapy solution, using the long-handled nylon scrub brush. Work from the bottom of the siding upward, scrubbing the brush in circular motions.

  5. Rinse the siding with water from the garden hose to wash away the soapy solution.

  6. Inspect the siding for remaining grease spots. If necessary, continue washing the siding with the solution until the grease is completely removed. Use the same cleaning and rinsing techniques as previously.

  7. Allow the siding to air dry completely.