Yes! You can still seal your tiles and grout in your bathroom. You will need to clean your bathroom to remove any soap scum or mildew that has already formed in your bathroom. If you are using a strong harsh cleaning agent we recommend that you rinse the area down with water thoroughly to remove any residue from the cleaning agent. Once this has been completed, you can seal your bathroom with our Premium Sealant or Tile & Grout Sealant. To help remove soap scum, use Tile & Grout Cleaners. If removing mould and mildew, use household bleach.