If efflorescence appears on unsealed Saltillo tiles, it can be removed using a hard-bristled brush, and then the tiles should be sealed once they are completely dry.
Efflorescence can be eliminated from Saltillo tiles, but it may come back if the root cause is not addressed.
However, if efflorescence appears on a sealed Saltillo tile, it is necessary to remove the sealer before attempting to eliminate the efflorescence. In the case of an oil-based sealer, an oil-based stripper should be used to effectively remove the sealer and reach the clay body surface. Once the sealer is gone, the efflorescence can be removed using a brush or sandpaper. After removing the efflorescence, it is crucial to ensure that the tile is spotless and completely dry before applying a fresh sealer.
To prevent efflorescence from reoccurring, it is essential to properly seal the tiles, ensure correct installation, and maintain a dry and clean environment.