Defining Grout Haze:
A semi-white haze is left on the surface of tile after grouting, even if you have diligently wiped down the surface with a wet sponge. That haze will still be there.
What Causes Grout Haze:
The organic materials within the grout. This is all a normal part of tiling. Because the process of grouting involves smearing grout across the tile with a rubber float, the tile is entirely covered with grout at some point.
First Steps Before Using Grout Haze Cleaner:
The first thing to do is pull off as much grout as you can with the rubber float. Then get a sponge--a big sponge. I like those meaty sponges that are about the size of a big paperback book, and which are usually found in the drywalling section of the hardware store. Dampen the sponge and remove all of the grout.
A Wet Sponge Itself Will Not Remove Grout Haze:
At first, it seems like the wet sponge will take off the grout haze. But that is only because the surface of the tile is wet. The minute the tile dries, the grout haze will appear. Wet-sponge it again, let it dry--and more haze. The stuff is impossible to remove.
Grout Haze Cleaner is Not Grout Cleaner:
Do not confuse grout cleaner with grout haze cleaner. Two completely different things.
DIY Methods Not Involving Grout Haze Cleaner:
Yes, some people recommend things like using non-abrasive kitchen cleaning pads, vinegar and water, mild acidic solutions, etc. My take on the matter is that grout haze cleaner is pretty cheap and you use it in small quantities. So just buy the actual grout haze cleaner and be done with it.
Places to Buy Grout Haze Cleaner:
Any tile store, home improvement store, or local hardware store. Grout haze remover is widely available.
Grout Haze - You Really Must Get Rid of It:
Grout haze is an inevitable, inescapable part of tiling. After grouting, a whitish "haze" will be left on the surface of the tile. No matter how much scrubbing you do, that haze will persist.
