How to Put Up Backsplash in Bathroom

Upgrading your bathroom with a stylish backsplash is an easy way to add visual interest and protect your walls from moisture damage. With some planning, right materials, and DIY skills, you can install a backsplash in your bathroom yourself. Here is a detailed guide on how to put up backsplash in bathroom.

Choose the Right Backsplash Material

When selecting a backsplash, consider moisture resistance, ease of cleaning, and visual appeal. Some top options for bathroom backsplash include:


Ceramic, porcelain, or natural stone tiles make an excellent backsplash choice. Opt for tiles with a polished finish for easy cleaning. Smaller tiles like mosaics create a striking look. Make sure tiles are rated for use in wet areas.


Glass tile or clear acrylic panels create a modern, sleek look. The non-porous surface resists mold and mildew growth. Glass tiles come in various colors, shapes, and sizes.

Natural Stone

Slate, travertine, and marble backsplashes bring an elegant, spa-like feel to the bathroom. Hone these stones to a matte finish for a textured look. Be aware that porous natural stones require extra sealing.


Metal backsplashes like copper, stainless steel, or tin add an industrial vibe. Some metals develop a patina over time for added character. Use metal backsplashes as an accent rather than full wall coverage.

Gather Supplies

Once you select the backsplash material, gather the rest of the supplies you’ll need:

  • Backsplash tiles/sheets
  • Mortar or mastic adhesive
  • Grout
  • Tile spacers
  • Tile cutter
  • Trowel
  • Grout float
  • Sponge
  • Safety gear like gloves and goggles

Make sure to get high-quality setting materials suitable for wet environments. Purchase extra tiles to account for breakage or the need to cut irregular shapes.

Prep the Wall Surface

Proper prep work ensures the backsplash adheres tightly to the wall. Here are the key steps:

  • Clean the wall thoroughly with a grimy tile cleaner to remove dirt, soap scum, and oils.
  • Inspect the wall for any damage or imperfections. Fill small holes with spackle and sand smooth.
  • Remove existing wallpaper, paint, or other finishes so the backsplash bonds directly to the bare wall surface.
  • Smooth any uneven areas in the wall with joint compound. Let dry completely.
  • Prime the bare wall with a latex primer. This helps the mortar adhere.

Once prepped, the wall surface should be clean, smooth, and ready for tiling.

Plan the Tile Layout

Take measurements of the backsplash area and sketch out a tiling pattern. Mark the center point and draw guidelines in pencil. Plan the layout so you don’t end up with slivers of tile at the edges. Cut border tiles to size as needed.

If installing a mosaic sheet, map out the sheet position and trim lines. Leave a 1/8-inch gap between mosaic sheets.

Mix up a small amount of mortar and practice laying a few tiles on the floor to test the pattern. Adjust as needed before installing on the wall.

Apply Mortar and Install Tiles

With the prep work and planning done, it’s time to start tiling:

  • Mix the mortar adhesive according to package directions. Maintain a consistent consistency.
  • Use a notched trowel to spread a thin, even layer of mortar on the wall area. Do sections of 2-3 square feet at a time.
  • Place the first tile in the center according to your layout. Push firmly to adhere in the mortar.
  • Place spacers around the tile edges. Add adjacent tiles, working outward row by row.
  • Check tiles for level and alignment as you go. Adjust as needed before the mortar sets.
  • Cut border and specialty tiles to fit using the tile cutter. Smooth cut edges with sandpaper.
  • Let mortar cure for 24-48 hours once all tiles are installed.

Take care to keep mortar off the tile surfaces so grout adheres properly. Wash hands frequently to avoid transfer.

Grout the Tile Joints

Grout fills the spaces between tiles, sealing the installation and giving a polished finished look:

  • Mix the grout just before use following package instructions. Use a latex fortified grout for water resistance.
  • Apply grout over the tiles using the grout float. Push into joints and remove excess.
  • Allow grout to firm up slightly for 10-15 minutes. Then clean the tile surface with a damp sponge.
  • Polish and smooth the joints by rubbing diagonally across tiles. Clean sponge frequently.
  • Allow grout to cure fully for 2-3 days. Seal grout annually to prevent staining.

Using a sanded caulk for larger joint widths can help account for tile movement.

Finish with Caulking and Sealant

The final steps complete your new backsplash installation:

  • Apply a thin bead of silicone caulk along the bottom edge of the backsplash where it meets the countertop. Smooth the caulk with a wet finger.
  • Similarly, caulk perimeter joints between the backsplash and walls, fixtures, or other materials.
  • Seal natural stone backsplash surfaces with a penetrating sealer suitable for wet areas. Reapply sealer periodically.
  • Clean your new backsplash regularly with a gentle tile and grout cleaner. Avoid harsh chemicals.

With proper care, your bathroom backsplash will provide a stylish focal point and protection for years to come. Installing tile may seem daunting, but take your time with the prep work and materials. Soon you’ll have the satisfaction of a beautiful, easy-to-maintain backsplash.

Frequently Asked Questions About Installing Bathroom Backsplash

What are some tips for cutting tiles?

Use a wet saw or tile cutter to make straight cuts. For curved cuts, use a tile nipper. For small adjustments, carefully scrape tile edges with a carbide scraper. Go slowly and wear safety goggles.

How do I create a niche or accent?

Cut out a portion of drywall to create a recessed niche for storing bath products. Or embed decorative tiles, medallions, or designs to make the backsplash a focal point.

What height should the backsplash be installed?

Typically backsplashes are installed 4-6 inches above the countertop surface. But you can also do a full height backsplash from countertop to ceiling for bold style.

Can I install backsplash over existing tile?

It is possible but not always advised. Ensure the original tile is solidly adhered, then prep and rough up the surface before applying mortar and new tile.

How do I cut holes for plumbing fixtures?

Use a rotary tool or tile hole saw kit. Cut holes slightly larger than fixture size. Finish edges smoothly. Caulk gaps neatly around fixtures.

What if I make a mistake during installation?

Carefully pry up tiles and scrape off old mortar to reset. Patch small damaged areas with leftover tile and fresh mortar. Take time to get it right.


Installing a backsplash in your bathroom provides an opportunity to add personal style and create a functional accent wall. With planning and care, you can achieve professional-looking results. Focus on proper prep, materials, and technique. The end result will provide lasting protection and design impact.