The author is a part-time home handyman and has used this technique to make several tired looking tile floors look new again.

Painter's tape can help you keep grout paint off of the tiles.

Tile floors can last for decades, however, the grout lines in between the tiles may become so stained that it's impossible to make them look clean. Luckily, there's a solution to this problem in the form of grout paint.

Products such as GroutRenew, which we've used in our own project, can be found at most home improvement stores in the tile section. This product is durable and includes a built-in grout sealer, along with Microban anti-mildew additive.

My wife and I have used grout paint on ceramic, travertine, and terracotta tile with great success. There are many colors available to choose from.

Just a fair warning though, painting grout lines is a fairly laborious project that can take up to several days to complete, depending on the size of the room—but once it's done, the difference is amazing.

Helpful Tip: If you can't find the color of tile grout paint that you're looking for, you can try blending colors. In the floor shown in this article, we've combined GroutRenew #380 Haystack color with #380 Bone to create a color in between the two.

Here's how we repainted our own grout lines and gave our bathroom floor a fresh new look.

This is one coat of tile grout paint. We added one more after this photo. Notice the difference compared to the grout to the right! A razor knife may be needed if you don't remove stray paint before it dries.

The final step is to remove the painter's tape and scrape off any excess grout paint on the tiles using a razor knife. Hopefully you've removed most using your damp microfiber cloth, as this type of paint is not easy to remove.

Check to see if the brand of grout paint you've chosen includes a sealer. If it doesn't, the final step will be to seal the grout lines using sealer, which you can also find in your local home improvement store's tile section.

Allow the paint to cure for several hours before walking on it, and enjoy the look of your "new" tile floor!

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.