After installation, you will quickly find out if your tile and grout is unsealed, as any food or drink spilled onto the floor will soak into the tile and grout, potentially staining it permanently.
Even when sealed, tile floors can start to show their age by the tile grout darkening and discoloring (This is the most common complaint from homeowners and business owners).
Particularly because tile is frequently found in a moist environment, like a bathroom or a kitchen, grout can darken, and in some cases, grow mold or black mold. Tile floors can easily be restore to their former glory by a quick dose of tile and grout cleaning. Black mold can damage sealants and grouting if not properly handled and cleaned correctly. A change of tiles may be needed because of this, also, you may need to search for new bathroom glass shower doors as they may have been worn away due to the mold. It is best to change them anyway in case they are in the process of being weakened and may eventually crack.
Although a quick cleaning should be done with your regular kitchen cleaning, bathroom cleaning and general housecleaning to keep it looking as good as you can, a dose of professional tile cleaning and grout cleaning can erase the stains and discoloring you aren’t able to clean with regular household cleaners.