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How to Clean a Sign

Cleaning a Painted or Clear Coated Sign

Below are our recommendations for cleaning a painted or clear coated polyurethane surface.

  • The maintenance and care of a painted or clear coated polyurethane surface would utilize the basic commercially available non-abrasive cleaners and polishes recommended for finishes exposed to the environment.
  • It is recommended to wait at least 30 days after painting before any cleaning or polishing is attempted.
  • A mild detergent and water solution with soft cloth toweling is often sufficient to remove most dirt followed with a thorough clean water rinse.
  • Application of polish (liquid or paste) should be done with a wet soft cloth covered sponge and buffed with a soft flannel cloth. This is best accomplished in the cooler hours of the day avoiding direct sunlight, if possible.
  • Use of polish over satin finishes may result in an increase to the gloss level.
  • Any questions should be directed to the manufacturer recommendations.
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