This video shows a professional tile and grout cleaning. They are using a a two step cleaning process in the video. The first step is to spray a hard surface cleaner on the tile and grout. The cleaning solution is left to dwell on the surface to loosen soil and break down oil and grease. Sometimes a third step of brushing or scrubbing the tile and grout can be added is there is a lot of build up on the surface.
The next step involves using a hard surface spinner and pressure washer and vacuum. The tile and grout is pressure washed at about 1200 psi with a spinning head that is moving at 1000 RPM. The water is then vacuumed up through small holes on the parameter of the spinning head, removing the excess water and all the dirt with it.
This type of professional hard surface cleaning is very effective on tile and grout. As you can see in the video it removes both embedded and surface soils. In some cases heat can be added to the pressurized water for more effective cleaning in layered dirt situations.
This type of cleaning is the standard professional tile and grout cleaning companies in Tampa FL. Chem-Dry of Tampa offers this cleaning service for your tile and grout.