22+ How To Seal Cement Tile Pictures . This method results in a beautiful smooth finish with no streaking. Sealing cement tiles prior to grouting and again after the installation is key to protecting the tiles from damage and preventing stains from settling into the tile surface. How to Properly Seal Grout from www.tilecleaning.org Be sure to do due diligence when researching installers to ensure they know how to properly put in cement tiles. Before sealers, cement tiles were protected from staining with an application of kerosene and paste wax. For thin layers or small amounts of cement, common household products may be sufficient for removal. Even factory presealed tiles require an additional sealer after. Cement tiles must be installed on a leveled, clean, dry surface. Before sealers, cement tiles were protected from staining with an application of kerosene and paste wax. Installin...