Remember to use dust control methods before using an electric grout removal tool. Once the grout is removed, vacuum it out from the joints very well and plan to reapply epoxy grout in its place.

The lines of grout between the tiles in your shower, bathroom walls and floor tiles can get grungy and gray after a while. Here's how to clean and seal it.

But there’s still plenty of room to experiment For an outside-the-box design, consider an epoxy grout that glitters or even glows in the dark, says Walker.