Epoxy grout is increasingly popular because it does not stain and prevents mould and fungus growing in the joints. However, it is very difficult to apply and clean off. To remove epoxy grout residue and stains from ceramic and porcelain tiles you must use a special detergent like CR10: a quick, highly effective solution that completely removes grout residue, even heavy, old staining, and is easy to apply to both floors and walls thanks to its gel-like consistence.
Removing epoxy grout stains from tiles with CR10
To remove the stains, apply CR10 epoxy residue cleaner undiluted and leave to act for at least 30 minutes. Then rub the surface with an abrasive pad or spatula. Rinse thoroughly with water. Repeat if necessary.