What Type of Grout to Use for Glass Tile Backsplash

Glass tile backsplashes can add a beautiful, gleaming focal point to any kitchen. But choosing the right grout for glass tile is critical – the wrong grout can ruin the entire look. Here’s a detailed guide on picking the best grout for glass tile backsplashes.

Factors to Consider When Choosing Grout for Glass Tile

When selecting grout for glass tile backsplashes, there are a few key factors to take into account:


Grout acts as an accent that highlights the glass tiles. Opt for a grout color that complements or matches the tiles. White and light gray grouts work well with most glass tiles. Darker grouts can also create a striking contrast.


The texture of the grout lines will impact the overall look. Smooth, finely graded grouts won’t detract from the sleek look of glass tiles. Avoid grouts with a rough texture.


Glass tile has very little absorption, so the grout must be durable enough to withstand cracking and staining. Epoxy grout is extremely durable and resistant to most household stains.

Grout Joint Width

Pay attention to the grout joint size recommended by the tile manufacturer, usually 1/16 to 1/8 inches. The grout joint width will determine which grout grades are suitable.

Best Grout Options for Glass Tile

With those factors in mind, here are the best grout choices for glass tile backsplashes:

Epoxy Grout

Epoxy grout is the top recommendation for glass tiles. It is durable, stain-resistant, and available in many colors. Epoxy grout won’t scratch the surface of glass tiles. It’s more expensive than other grouts but worth the cost.

Polymer-Modified Grout

For a less expensive option, consider polymer-modified grout, which has latex added to improve flexibility and adhesion. It’s still durable and stain-resistant but requires more sealing than epoxy grout.

Sanded Grout

Sanded grout contains quartz for durability. It can work for glass tiles with grout joints 1/8 inch and wider. Sanded grout is prone to scratching the surface of glass tiles during application.

Unsanded Grout

For grout joints 1/16 inch or smaller, unsanded grout is a good option. The lack of sand allows for smooth application. Unsanded grout requires frequent sealing.

Grout Application Tips

Proper application is also key to getting beautiful results with glass tile grout:

  • Allow the tile thinset to fully cure before grouting, usually 24-48 hours.
  • Grout small sections at a time, holding the grout float at a 45-degree angle to the joints.
  • Thoroughly clean each section with a sponge before the grout dries.
  • Use grout release or sealer on the tiles before grouting to make cleanup easier.
  • After grouting, wait 72 hours before sealing or polishing epoxy grouts.

Maintaining the Grout Over Time

All grouts require some periodic maintenance to keep them looking fresh:

  • Seal grout once a year, except for epoxy grout.
  • Re-apply grout or caulk if any cracks appear.
  • Use a gentle cleaner designed for grout; avoid abrasive scouring pads.
  • Re-seal whenever the grout appears to be absorbing liquids.

Common Grout Issues and Solutions

Cracking: Can be caused by movement or improper curing. Carefully remove cracked grout and re-apply.

Scratching: Visible scratches usually mean the wrong grout was used. Epoxy grout resists scratching.

Staining: Sealing the grout prevents most stains. For stains that occur, use a grout stain remover.

Hazing: Grout haze on the tile surface can be polished off epoxy grout once cured. For other grouts, use a grout haze removal chemical.

Frequently Asked Questions

What is the most stain-resistant grout for glass tile?

Epoxy grout is the most stain-resistant choice and won’t absorb liquids like other cement-based grouts. It creates durable, waterproof grout joints.

Can I use sanded grout on glass tile?

Sanded grout should only be used on glass tiles when the grout joint is 1/8 inch or wider. The sand can scratch the smooth glass surface.

Is white grout or gray grout better for glass tile?

White and light gray grouts both complement glass tile beautifully. Choose based on the surrounding elements like cabinets and countertops.

How soon can I seal grout after application on glass tiles?

It’s best to wait the manufacturer’s recommended cure time, usually 72 hours for epoxy and 7 days for cement grout, before sealing or polishing.

Should I grout all the way to the corners with glass tile?

Yes, grouting right up to the corners gives a clean finish. Take care not to scratch the tiles when cleaning excess grout.


Choosing the ideal grout takes some careful consideration when working with glass tile backsplashes. Epoxy grout is best for durability and stain resistance. Proper application techniques and maintaining the grout will keep the backsplash looking beautiful for years to come. Pay attention to the grout joint width when selecting a grout. With the right grout choice and proper care, glass tile backsplashes can be an elegant and practical addition to any kitchen.