We have a foyer that's covered with slate/grout. I absolutely love this part of the house, but its in desperate need of a cleaning. I would assume it needs to be sealed also? It's original to the house - probably since 1975ish.
The grout is definately pourous....looks gray (like cement).
I'm not too worried about the slate (per say), because it looks fine. The grout looks very dirty in some areas. The pictures don't do it any justice for the way it looks. The only thing I've done over the years, is a damp mop/vacuum.
I don't even know what type of grout this is and wouldn't even know where to begin to search.... I've read about using 50/50 mixture of peroxide & water.
I've also read using shaving creme?
Any thoughts are greatly appreciatted!!