How to Install a Tile Backsplash on Drywall

Installing a tile backsplash is a great way to add visual interest and value to your kitchen. With the right materials and some DIY know-how, you can transform an ordinary wall into a stunning focal point. A tile backsplash protects the wall from moisture and stains while providing an easy-to-clean surface.

While backsplashes are often made from ceramic or porcelain tile, glass, metal, and stone tiles are also options. The most commonly used sizes are 4-inch by 4-inch or 3-inch by 6-inch, but you can get creative with shape, color, and material.

When installing a backsplash on drywall, proper preparation and installation techniques are key for a long-lasting finish. With some basic tools and materials, you can achieve a high-end backsplash look without the high cost. This guide will walk you through the entire process of how to install a tile backsplash on drywall.

Materials and Tools Needed

Installing a tile backsplash is an intermediate DIY project that requires some specialized tools. Here is a list of the basic materials and tools you will need:

Tiles

Ceramic, porcelain, glass, or stone tiles
Enough tile to cover the backsplash area, plus 10% extra
Tile spacers
Tile adhesive or thinset mortar
Grout

Drywall Supplies

Drywall screws
Joint compound
Drywall tape
Sandpaper

Tools

Tape measure
Pencil
Level
Tile cutter
Notched trowel
Grout float
Sponge
Bucket
Safety glasses and gloves

Other Supplies

Drop cloths
Rags
Tile sealant
Mixing paddle or drill mixer

Step 1: Prepare the Wall

Proper drywall installation and prep is crucial for a tile backsplash. Any unevenness in the wall will transfer to the tile.

Follow these steps to prepare the drywall:

Make sure the drywall is firmly screwed into the studs, especially around the edges and seams. Use drywall screws, not nails.
Fill seams and screw holes with joint compound. Apply joint tape over seams for strength.
Let compound dry fully, then sand until smooth. Avoid over-sanding.
Prime the sanded drywall with primer/sealer using a paint roller. This provides an even porous surface for the tile adhesive to grip.
Let the primer coat dry fully before tiling.

The wall surface should be as smooth and even as possible with no bumps. Take your time with the drywall prep to ensure your backsplash tiles lay flat and look uniform.

Step 2: Plan the Layout

Careful planning ensures you have enough tiles and set out the pattern correctly.

Measure the total area to be tiled. Include the countertop area you want to extend the backsplash onto.
Draw out a layout plan showing the tile arrangement, pattern, countertop coverage, and any focal points.
Mark a level line at the bottom edge of the backsplash area to guide the first row.
Determine the tile sizes, amounts needed, pattern, and trim tiles required.
Do a dry layout on the floor to map out your pattern and ensure enough materials.

Consider outlets and switches when planning the layout. You can trim tiles around them or move them for a seamless look.

Step 3: Cut the Tile

Cut backs or edge tiles to fit around corners, edges, outlets, and other openings.

Measure and mark each tile precisely for a clean cut.
Use a wet saw or manual tile cutter for straight cuts and rounded edges.
Use a tile nipper for small irregular edge pieces or notches.
For U-shaped cuts around electrical boxes, use a rotary tool fitted with a tile bit.
Smooth any rough edges with sandpaper or a whetstone. This prevents cutting the thinset mortar.

Cut tiles gradually for an exact fit. Pre-cut all specialty pieces before you start setting the tiles.

Step 4: Mix and Apply the Thinset

Thinset mortar provides the adhesive base layer for the tile. Using the right amount is key.

Choose an appropriate thinset mortar for the tiles and wall material per manufacturer instructions.
Mix up small batches of thinset as you go to prevent waste.
Add powder to water in a bucket and mix to a smooth, lump-free consistency. Let sit 10 minutes then remix.
Use a notched trowel to evenly spread a thin layer of thinset on the wall, using the trowel’s straight edge to scrape off any excess.
Apply only 1/4 to 3/8 inches thick. Too much can cause tiles to slide.
Spread thinset over a small workable area so it does not dry out before tiling.

The thinset consistency should be such that tiles adhere but don’t slide when set. Follow the manufacturer’s instructions.

Step 5: Set the Tiles

Once the thinset mortar is spread, it’s time to set and orient the tiles.

Starting at the bottom marked line, press tiles firmly into the thinset with a slight twisting motion. Use spacers between.
Work in columns up the wall, keeping the lines straight and joints aligned.
If the tiles slide, wait for the thinset to setup more.
Use a level often to ensure the tiles are plumb and level as you go up.
For a offset brick pattern, start alternate rows at the midpoint of the tile below.
Fill any thinset gaps behind tiles with additional thinset as you work to prevent voids.
Clean away any excess thinset and reapply if tiles aren’t adhering well. Let the thinset fully cure per manufacturer instructions before grouting.

Step 6: Apply the Grout

Grout fills the joints between tiles with a waterproof finish. Match the grout color to your tile.

Allow the thinset to fully cure per manufacturer instructions before grouting, usually 24-48 hours.
Mix the grout with water to a thick peanut butter consistency without lumps.
Holding a rubber grout float at a 45° angle, spread grout forcefully into the tile joints, scraping off excess.
Let the grout sit for 5-10 minutes to slightly harden before wiping away residue.
Wipe diagonally across the tiles with a damp sponge to clean grout haze and smooth joints.
Rinse the sponge and change water often for best results.
Let grout dry 72 hours, then apply grout sealer if desired for extra protection.

When grouting, work in small sections so the grout doesn’t dry on the tiles before wiping. Carefully grout around the edges.

Step 7: Finish and Seal the Tiles

Once grouted, the tiles should be sealed and protected to look their best.

Use caulk between the countertop and backsplash and around sinks or fixtures to seal any gaps.
Apply a penetrating sealant formulated for the tile material, following the manufacturer’s directions.
Buff off any remaining haze after the recommended drying time with a soft cloth. Reapply more sealer for better water protection.
Avoid using harsh cleaners, chemicals, or abrasives on the finished backsplash.
Re-seal the grout every 1-2 years for optimal appearance and performance.

Proper sealing makes the grout repel stains and allows easy cleaning of the backsplash. Always test cleaners on a spare tile before using on the finished backsplash.

Tips for Getting Great Results

Follow these additional tips for getting professional looking results with your DIY tile backsplash project:

Carefully plan the layout and gather all materials beforehand.
Take time to properly prepare the drywall surface.
Use tile spacers for even grout lines and layout.
Work methodically and check your work as you go with levels.
Ensure the thinset fully cures before grouting.
Clean excess grout thoroughly before it dries.
Use caulk for change of plane joints and gaps.
Always seal and protect the finished backsplash.

With the right prep work, materials, and techniques, you can achieve gorgeous, long-lasting results and save money with a DIY tile backsplash. Just take your time and don’t be afraid to try using tile in a creative way.

Frequently Asked Questions

Here are answers to some common questions about installing a tile backsplash on drywall:

What kind of thinset should I use?

For drywall, use a polymer-modified thinset mortar. This contains polymers that make it more flexible and suitable for drywall over wood framing. Consult manufacturer guidelines.

How long does thinset take to cure?

Thinset fully cures in 24-48 hours typically. Check the product directions. The tiles should not shift when set before grouting.

What size grout lines should I use?

1/8 inch is the standard grout line thickness for 4×4 inch wall tiles. Smaller tiles like mosaics use 1/16 inch lines.

How soon can I seal the grout after installing?

Wait a minimum 72 hours for grout to fully cure before applying any sealants.

What’s the best way to cut holes for outlets?

Use a rotary tool with a ceramic tile bit to cut precise curved openings for outlets and switches.

Should I use spacers for a subway tile pattern?

Yes, tile spacers are still important to keep an even consistent grout line width, especially for stacked subway layouts.

How do I cut L-shaped tiles?

Use a wet saw or tile nippers. First score a line with the nippers, then nip down the line to break the tile. Sand any rough edges.

Can I use premixed thinset?

Yes, premixed thinset in a tub works fine, just ensure it’s suitable for the tile type and wall material per the manufacturer.

Conclusion

Installing a tile backsplash on drywall adds function and beauty to your kitchen. With proper planning, materials, and technique, you can achieve stunning results and better protect the wall area around a sink or stove. Focus on solid drywall prep, mixing thinset well, level tile setting, and thorough grout cleanup for a professional look. The finished backsplash will modernize your kitchen and make cooking and cleaning easier for years to come.