For large areas of grout discoloration, spray with hydrogen peroxide, let sit and rinse/wipe. Note that hydrogen peroxide can ...

Dark grout easily shows mineral deposits from water over time. And, of course, going too light can be problematic for obvious ...

These sealers are sometimes pigmented, which would allow you to change the grout’s color. While membrane-forming sealers are good for unglazed tile like stone, they won’t adhere to ceramic and ...