How to Clean an Antique Metal Sign

By Jo Burns
How to Clean an Antique Metal Sign
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Anyone who has watched the popular public television broadcast "Antiques Road Show" knows that many fine antiques have been ruined by over-zealous cleaning. An article published by reminds us that "antique metals develop a certain look over time due to patina and oxidation [and] it would be detrimental to the value to try an alter the color in any way." For this reason, only gentle methods are recommended for cleaning an antique metal sign.

Step 1

Mix a small amount, no more than a teaspoon, of a mild dish soap or a natural, plant-based cleaner, with a gallon of water.

Step 2

Moisten the cloth with the soap mixture and wring it out well. Gently wipe away dust and dirt from your metal sign.

Step 3

Use a clean cloth and clean water to wipe off any soapy residue.

Step 4

Dry your metal sign with another clean cloth. Make sure to dry the sign completely. Oxidation or water marks may occur if it is left moist.