How to Change Grout Color

Grout starts out looking clean and tidy, but eventually, it starts to show its age. It can discolor, degrade, or simply no longer fit with your interior design. When that happens, there’s an often-overlooked fix you should consider: changing grout color. Here’s how to do it. 

Why Should I Change My Grout Color?

Coloring grout is a great way to update the look of a tile job without committing to a more extensive (and expensive) renovation. It can also cover up the inevitable stains and mildew spots that crop up over time. If your grout looks dingy and dirty even after you’ve just cleaned it, changing the color can make it look fresh again.

If you choose a darker grout color, it can hide future stains, making it easier to maintain the grout’s appearance.

You have two choices when it comes to changing grout color: You can apply a colorant, or you can remove and replace the grout.

How to Prep for Changing Grout Color

When looking at how to change grout color, you can’t forget preparation. Here’s a look at the prep work required, whether you choose to repaint your existing grout or remove and replace it. 

Prep for Repainting Grout

Repainting or staining grout works well if you’re darkening the grout or if you’re working with smooth tiles. Preparation involves thoroughly cleaning the grout and tile. Grout colorants may require specific cleaning products for the best results, so check the manufacturer’s instructions.

Generally speaking, applying white vinegar and a paste made from baking soda and water using a stiff scrub brush works well. Scrub, then rinse the area with a sponge and water. Let the tile and grout dry completely before repainting.

After cleaning, test the colorant on a small area by:

• Shaking the colorant bottle to mix the contents

• Applying a small amount of colorant on an inconspicuous area, using a sponge or brush 

• Letting the colorant dry to a hard finish 

• Lightly scrubbing the grout to ensure the stain will hold

If the paint or stain flakes off, you might need to try a different product to find one that works with your existing grout. 

Prep for Removing and Replacing Grout

Use this method for coloring grout when:

• You’re working with natural tiles, which are especially porous (meaning they’ll readily absorb grout colorant).

• You want to lighten the grout color.

• You need to remove mold or mildew from the grout.

Preparation for removing and replacing grout includes donning protective gear, including safety glasses, a mask, and gloves. You also need to cover the work area with plastic sheeting or a drop cloth.

How to Change Grout Color