How Much Space Between Backsplash Tiles?

Backsplashes are an important design element in any kitchen. Not only do they protect the walls from splashes and stains, but they also add visual interest and tie the whole space together. When installing a backsplash, one of the biggest decisions is how much space to leave between the individual tiles. Here is a detailed guide on how much space between backsplash tiles is recommended.

How Much Grout Space for Backsplash Tiles?

The general rule of thumb is to use a grout joint of 1/16 to 1/8 inches between backsplash tiles. This allows enough room for the grout to be properly packed between the tile edges without being too thick.

Some factors to consider when deciding on grout space:

  • Tile size – Smaller tiles like mosaics need a narrower grout width of 1/16 inches. Standard 4-6 inch tiles work well with a 1/8 inch grout line. For larger format tiles over 8 inches, a 3/16 inch grout width is common.
  • Grout color – Contrasting grout shows wider lines more. If the grout matches the tile color, small 1/16 inch lines are less visible.
  • Tile texture – Smooth tiles like glass accentuate the grout lines. Grout is less obvious on tiles with more surface texture.
  • Personal preference – The width of the grout lines impacts the overall visual effect. Narrow grout lines emphasize each tile. Wider grout makes the tiles look more unified.

What’s the Standard Grout Line Spacing?

The most common grout joint for backsplashes is 1/8 inch. This standard width works well with most types of tile between 4 to 6 inches. It provides enough space for grout adhesion without too much visible grout.

Many installers use 1/8 inch grout lines for backsplashes as their default spacing. The uniform look it creates is attractive and versatile for most kitchens.

When to Use Wider Grout Lines

While 1/8 inch is generally recommended, some types of backsplash call for a wider grout line:

  • Stone tiles like marble or travertine benefit from 3/16 inch spacing to account for their irregular thicknesses.
  • Handmade or hand-cut tiles have slightly uneven sides that require more grout.
  • Mosaics and small tiles under 2 inches are easier to install with a 3/16 inch joint.
  • Subway tiles longer than 6 inches should use 3/16 inches for proper grout adhesion.
  • Contrasting grout shows up better with wider spacing. Use 3/16 inches if the grout color differs from the tile.

Benefits of Narrow Grout Lines

Grout lines of 1/16 inches have some advantages in certain backsplash applications:

  • They minimize visible grout and emphasize the tile design.
  • Small mosaics and mendicino tiles benefit from very narrow joints.
  • Matching grout hides best with tight 1/16 inch grout joints.
  • Modern, sleek backsplashes often use 1/16 grout lines for a continuous look.
  • Good for high traffic areas where grout is prone to getting dirty.

Just keep in mind that the grout may crack more easily at this width.

Grout Line Pattern Styles

Beyond the width, you can also play with the grout line pattern:

  • Straight – Grout lines run straight horizontally and vertically. This gives a uniform grid look.
  • Staggered – Tiles are offset so the grout lines don’t align. Creates more dynamic visual effect.
  • Diagonal – Grout lines are set at an angle or diamond pattern. Adds a modern vibe.
  • Penny Round – Tiles are set with a 1/8 gap around each. Gives an interesting patchwork look.

How Much Space Between Backsplash and Countertop?

It’s also important to consider the gap between the backsplash and countertop. The standard spacing is:

  • Leave a 1/8 inch gap between the backsplash and countertop.
  • Use caulk to fill this gap for waterproofing and smoothing any uneven edges.
  • For a seamless look, choose caulk in a color matching the grout.
  • If the countertop material differs from the backsplash, use caulk that matches the countertop.

Grout Line FAQs

Should grout lines be consistent?

Yes, keeping grout line spacing consistent gives a clean uniform look. Don’t mix different size grout lines.

What’s the best grout color?

Match the grout color to your tiles for a seamless look. For contrast, go with bright white, black, or grey grout.

Can you use different grout colors?

Using two complementing colors randomly can create interest. Limit to two colors and keep the pattern clean.

Should you grout floor and wall tiles the same?

It depends. Wall and floor tiles often use different spacing. What matters is that each surface is grouted consistently.

Is epoxy or cement grout better?

Epoxy grout is great for wet areas like backsplashes. Cement grout works for floors and walls with less moisture.


Choosing the right grout line spacing is an important finishing step for any backsplash. The standard 1/8 inch width works for most kitchen backsplash tile installations to get that clean, uniform look. Adjust according to your tile size, grout color, and overall design aesthetic. Getting the grout lines right ensures your backsplash comes together beautifully.