How to Do Backsplash in Bathroom


Adding a backsplash to your bathroom can completely transform the look and feel of the space. Not only does a backsplash provide an opportunity to infuse personality and visual interest through the materials, colors, and designs you choose, but it also serves important functional purposes. A properly installed bathroom backsplash protects your walls from water damage and makes cleaning much easier.

While bathroom backsplash installation may seem daunting, it’s actually a very doable DIY project for most homeowners. With proper planning, high-quality materials, and the right tools, you can achieve a beautiful, long-lasting backsplash in your bathroom. In this comprehensive guide, we’ll walk you through everything you need to know to successfully install a stylish and functional backsplash in your bathroom.

How to Select the Right Backsplash for Your Bathroom

The first step is choosing a backsplash that aligns with the overall design aesthetic you want for your bathroom. Here are some factors to consider when selecting bathroom backsplash materials:


The most common materials for bathroom backsplashes include:

  • Ceramic tile – A classic choice that comes in endless colors, sizes, textures, and patterns. Glazed ceramic tiles are water-resistant and easy to clean.
  • Glass tile – Provides a sleek, modern look. Typically made from recycled glass, so eco-friendly. Naturally water-resistant.
  • Natural stone – Elegant and durable options like marble, travertine, slate, and granite. Needs sealing to be water-resistant.
  • Metal – Stainless steel, copper, and tin backsplashes make a bold statement. Long-lasting but higher cost.
  • Engineered quartz – Resists stains, scratches, and moisture. Available in wide range of colors and styles.

Consider moisture resistance, ease of cleaning, cost, and how well each material fits your design aesthetic.


Typical backsplash locations include behind the sink, around the mirror, behind the toilet, around tubs and showers, and on accent walls. Decide which areas you want to highlight.

Size of Tiles/Panels

Larger format tiles create a seamless look, while mosaics and small tiles allow more design flexibility. Factor in complexity of installation.

Colors and Patterns

Choose colors that coordinate with your overall bathroom color palette and style. Busy patterns can be overwhelming in small bathroom spaces.

Accent Trim

Accent tiles, listellos, mosaics, and other trim pieces add visual interest. Contrasting colors and materials create definition.


Ensure your backsplash ties together your cabinets, flooring, fixtures, and other finishes. A cohesive look pulls the whole room together.

How to Prepare the Surface for Backsplash Installation

Proper surface preparation is key to a long-lasting backsplash installation. Here are the steps:

Clean Thoroughly

Use a multi-surface cleaner to thoroughly clean the entire area where the backsplash will be installed. Grease, grime, and soap buildup will prevent proper adhesion.

Remove Old Backsplash

If installing over an existing backsplash, use a hammer and utility knife to carefully pry off and scrape away old materials. Take care not to damage the wall surface.

Fill Any Holes or Gaps

Examine the wall and fill any holes, gaps, cracks, or uneven spots with spackle. Allow filler to dry completely before moving on.

Sand Rough Areas

Use 100-120 grit sandpaper to smooth any bumps or uneven areas in the wall for a flat surface.

Prime the Wall

After ensuring the wall is clean, flat, and smooth, apply a coat of multi-purpose primer. This helps tile adhesive adhere.

Allow primer to dry fully before installation (typically 1-2 hours).

How to Select the Right Tools and Materials

Gathering the right tools and materials is crucial for proper installation. Here’s what you’ll need:


Purchase enough tile for your project, adding at least 10% extra in case of breakage or the need to cut tiles.

Tile Adhesive

Select an adhesive designed for bathroom use. Flexible adhesives like mastic or thinset mortar are best.


Grout fills in gaps between tiles. Choose an epoxy-based grout for moisture resistance. Match grout color to your tile.


Notched trowels help spread adhesive evenly. Choose size based on tile dimensions.

Tile Spacers

Spacers keep tile rows straight and provide consistent grout line spacing.

Tile Cutter

A cutter ensures straight cuts for partial tiles around edges and corners.

Grout Float

A grout float helps spread grout smoothly across tile surfaces.

Grout Sealer

Sealing grout makes it water-repellent and stain-proof. Use a silicone or urethane sealer.

Cleaning Sponge

For wiping away excess grout and clean up.

Safety Gear

Safety glasses, gloves, knee pads, and a breathing mask are recommended.

With all your materials purchased and tools on hand, you’re ready to start tiling!

Step-by-Step Installation Guide

Follow these key steps for proper backsplash installation:

Step 1: Plan Your Layout

Dry lay a few rows of tile on the countertop to visualize placement. Check that edges align and make adjustments as needed.

Use a level to ensure your bottom row will be straight. Mark the bottom line with a pencil.

Step 2: Apply the Adhesive

Use the notched trowel to spread a thin, even layer of adhesive on the area where the first tiles will be placed.

Spread only enough adhesive that tiles can be set before it skins over (typically 15-20 minutes).

Step 3: Set the First Row

Starting at one end, press tiles firmly into the adhesive along the bottom marked line. Place spacers between each tile.

Check again with level that this row is straight. Adjust as needed.

Step 4: Apply Grouting Tape

For clean edges, apply painters’ tape vertically along the outside edge of the first row. Fold top edge under.

This protects surfaces from excess grout during application.

Step 5: Set Additional Rows

Continue setting tiles row by row using spacers to maintain even grout line spacing.

Periodically check levelness and straightness as you go. Cut edge tiles as needed.

Step 6: Allow Adhesive to Cure

Let adhesive fully cure for 24-48 hours. This ensures a strong bond before applying grout.

Remove grouting tape and clean any adhesive residue with a damp sponge.

Step 7: Grout Application

Apply grout by working it into the spaces between tiles with the grout float. Hold float at a 45° angle.

Thoroughly clean excess grout from the tile surface with a damp sponge.

Step 8: Final Cleaning

Once grout has cured per product instructions (typically 24-48 hours), use a soft cloth to remove any remaining grout haze.

Rinse thoroughly and repeat cleaning until tiles have a uniform appearance.

Step 9: Seal Grout

Apply grout sealer according to product directions. This adds waterproof protection.

Let sealer fully cure before using the bathroom (typically 24-48 hours).

Your new backsplash is complete! Enjoy this gorgeous new feature in your bathroom.

Tips for Achieving a Flawless Finish

Follow these pro tips for beautiful, long-lasting results:

  • Carefully mix adhesive and grout to correct consistency per package directions.
  • Ensure the wall surface is flat and plumb before starting. Address any issues.
  • Joint lines between tiles should be uniform for a cohesive look. Keep spacers consistent.
  • Completely clean tiles of excess grout before it dries using minimal pressure.
  • Avoid getting grout on un-tiled surfaces by maintaining grouting tape edges.
  • Seal grout annually to maintain waterproofing and prevent staining or cracking.
  • Use caulk instead of grout for transition areas between tile and other surfaces.

With good preparation, high-quality materials, patience, and proper technique, you can install an eye-catching backsplash in your bathroom yourself.

Frequently Asked Questions

What’s the best backsplash for bathrooms?

For bathrooms, moisture-resistant ceramic, glass, and stone tiles are best. Options like marble or stainless steel can work too but may require more maintenance. Avoid porous materials like unsealed wood or drywall.

Do you have to seal bathroom tile?

Sealing porcelain or ceramic bathroom tile itself is not required as those materials are inherently water-resistant. However, you should apply grout sealer to cement-based grouts to prevent stains and moisture absorption. Epoxy grouts don’t require sealing.

How do you cut tiles for a backsplash?

Use a wet tile saw fitted with a diamond blade to accurately cut ceramic, porcelain, or stone tiles for a backsplash. For detailed or angled cuts, a manual tile nipper and carbide scoring tool can be used. Always wear safety gear when cutting tile.

Can backsplash tile be installed directly over drywall?

Tile can be installed over drywall using a fiberglass mesh tape along seams for reinforcement. Water-resistant drywall or cement board provides better moisture protection. Be sure to use a waterproof, flexible adhesive.

How long does it take for grout to dry before sealing?

Cement-based grouts take 24-48 hours to fully cure before applying a protective sealer. Always follow product instructions – some rapid-set grouts can be sealed in as little as 4 hours. Using an epoxy-based grout eliminates the need for sealing.

Should backsplash go all the way to the ceiling?

Full height backsplashes can look great in bathrooms. The key is cohesion with the overall design. Standard height is 4 inches above the counter. Extending to the ceiling frames the space nicely. Accent strips can give a full splash effect for less cost.

Does backsplash go behind mirror?

It’s recommended to bring your backsplash tiles all the way up behind the bathroom mirror. This creates a continuous finished look. Use caulk between the tile and mirror edges for water protection and allow the mirror to be lifted off later if needed.


Installing a backsplash is an achievable DIY bathroom project that can completely transform the aesthetic. With the right preparation, high-quality materials, and proper technique, you can create a stunning focal point that also protects your walls. Carefully planning the design, using tile spacers for neat joints, thoroughly cleaning excess grout, and sealing the finished product will help ensure you achieve a flawless finish.

Tackling the project methodically step-by-step as outlined above will set you up for success. Just take your time, do the prep work properly, and don’t be afraid to call in a pro if certain aspects like making intricate tile cuts seem too daunting. With some perseverance and patience, you can enjoy a beautiful new backsplash that makes your bathroom pop.