How to Clean Unsealed Tile Grout
- 1). Clean the grout thoroughly with a vapor steam cleaner. Glide the utility brush along the grout lines to extract dirt, grime, oils and bacteria. Operate the machine according to the manufacturer's directions.
- 2). Fill a plastic bucket with 1 gallon of very warm water. Add 1 cup of oxygen bleach powder to the wax. Mix the solution thoroughly and allow it to dissolve for 10 minutes.
- 3). Soak the grout with the solution using a sponge mop. Keep the solution on the grout for 30 minutes or longer. If the solution dries during the dwell time, apply more to the grout.
- 4). Scrub the grout vigorously with a grout brush. If the grout remains dirty, mop the grout with the solution until all grime and stains are removed.
- 5). Rinse out the bucket and fill it with fresh warm water. Mop the grout with the water to rinse away the oxygen bleach solution and loose grime. Dry the grout thoroughly with a clean towel.