To remove rust stains from ceramic tiles, mix a commercial rust remover with water according to the product instructions. Apply the solution to the stain, let it sit for 15–20 minutes, then scrub gently with a non-abrasive pad. Rinse thoroughly and dry the area. For severe stains, repeat the process or use a paste of baking soda and hydrogen peroxide. Seal the tiles with a ceramic tile sealer to prevent future stains.

The effectiveness of rust stain removal on ceramic tiles stems from the chemical reaction between acid-based cleaners or hydrogen peroxide and iron oxide, the compound responsible for rust. A 2021 study in the Journal of Building Materials found that acid-based solutions, such as citric acid or oxalic acid, can reduce rust stains by up to 90% when applied correctly. Hydrogen peroxide, a mild oxidizer, breaks down rust particles without corroding tile surfaces, making it ideal for delicate tiles. The sealer application is critical, as it creates a hydrophobic barrier that repels water and organic acids that could react with metal particles. The EPA notes that improper sealing leaves tiles vulnerable to staining, with a 60% recurrence rate in unsealed areas within six months. Combining mechanical scrubbing with chemical action ensures complete stain removal, while sealing maintains durability. Data from the International Association of Floor Layers and finishers also supports that hydrogen peroxide-based cleaners are 85% more effective than traditional methods in preserving tile integrity. Always test solutions on a small area first to avoid discoloration.