Quote:
Originally Posted by maxmom  Home Depot has a great, cleaner, which you will have to use before you seal, I did it, but still gets darker if wet;
-Grout cleaner;
ZEP, commercial-Grout and whitener
-Sealer;
TILELab, SurfaceGard penetrating Sealer
I got them both at Home Depot |
Grout should not get darker after it's wet if it's sealed properly, if it's getting darker than some water is leaching down. Sometimes you have to go over the area, three times or more, but the test is that it should no longer get darker, and then you know you've sealed enough.