How To Clean Rust Stains from Concrete
Paint cans, tools, work tables and other metal objects can cause rust stains when in close and constant contact with the concrete floors of your garage, basement or rec room. Placing protective pads under furniture and finding less reactive containers can help keep current stains from worsening and prevent future stains. A simple cleaning solution and basic tools can treat the remaining rust stains. This method is designed for standard concrete floors. For glazed and decorative floors refer to the specific articles in this section. Materials can vary, so remember to test techniques and cleaning solutions in an inconspicuous spot before using on a wider area.
Remove any loose debris so that the rust-affected area is free from loose debris such as dirt, leaves or anything that might interfere with the stain removal process.
Mix a quart of cleaning solution at a time. Use 1 quart of water, and 3 TB of Bar Keeper's Friend. For severe stains, the amount of Bar Keeper's Friend can be increased. Use a nylon or other stiff synthetic bristle brush to apply the solution to the stain with a scrubbing motion. Rinse the brush regularly, and refresh the cleaning solution as necessary. If a large amount of rust debris is being dislodged, simply wipe away with a clean sponge wet with water.
Follow removal of the rust stain with a light overall cleaning using a lightly sudsy solution of water and a mild dish liquid. To complete the stain removal and cleaning process, wipe the area with a clean sponge wet with water to remove any remaining stain or cleaning solution residue. Allow the area to dry thoroughly.
Caution: Never mix cleaning agents or chemicals, the result can be dangerous or deadly. Before cleaning, always test the agent on an inconspicuous location to determine its suitability and to make certain it does not damage the material. Wear appropriate clothing such as gloves and protective eyewear, and work in a well-ventilated area. Accidental inhalation or ingestion of cleaning agents can be hazardous and even fatal, particularly to pets and children.