DIY Tile Wall Backsplash Design

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Adding a DIY tile wall backsplash design to your home is one of the easiest ways to elevate your space and add a touch of personal style. Whether you’re looking to modernize your kitchen or give your bathroom a fresh update, a tile backsplash creates a polished, professional look—without the professional price tag. With just a few tools, some careful planning, and a bit of patience, you can achieve stunning results that you’ll be proud to show off.

In this step-by-step tutorial, I’ll walk you through how to tile a backsplash, from measuring your space to adding the finishing touches. Plus, I’ll share tips, tricks, and lessons I learned along the way to make your project as smooth as possible. This particular tile wall design was part of my living room built-ins project. I used a tile design to add character and movement to my final project.

While looking for tile inspiration, I fell in love with a pattern similar to the one I used. However, I was not working with a very large space so I decided to use smaller tiles so you would see more of the pattern. I liked that these particular tiles already had a subtle, marble look to them which gives great dimension and balance against the faux black marble desktop. This was a very quick and easy backsplash tile to install!

Step 1: Measure 

Measure the area you will be tiling and lay out your pattern on the ground to make sure you get it where you want it to go. You should center your pattern in the space you have.

Step 2: Prep Your Surface

Wipe down the wall and make sure it is thoroughly cleaned and free from dust, dirt, grime or particles.

Step 3: Install MusselBound Adhesive Tile Mat

The MusselBound adhesive tile mat is basically a giant double sided roll of foamy tape. But it is, VERY sticky. Draw a square line on your wall to line up your first piece. Don’t rely on your walls to be square. If they are anything like mine, they’re farrrr from it!

Remove the plastic from the back side of the mat and stick it onto the wall. Apply it vertically. Leave the plastic on the front side of the mat until you’re ready to place your tiles. The nice thing about using the adhesive tile mat is if you happen to get interrupted, you don’t actually have to start tiling right away like you would with mortar.

Once all of your mat is adhered to the wall, run your grout float over top of it using good pressure to make sure it’s evenly applied.

Step 4: Place Your Tiles

In theory, you should start your tiles in the center point of your surface and work your way outward. That’s how the pros do it. However, if I would have done that in this case, I would have been left with many annoying cuts on tiny tiles that would have required a wet saw and potentially a few fingers (jk).

I messed around with my design on the floor until I found a placement pattern that would have minimal cuts and could all be done using a tile cutter – much easier!

Therefore, I started my tile in the upper center of my space.

Start by pulling off the plastic of the adhesive mat in ONLY the area you are going to be tiling to begin. Using a level and a marker, draw a straight line on the sticky part of the mat  so you get your first tile perfectly straight.

Very lightly, position your tile onto the adhesive mat. As long as you don’t push hard, you can adjust the tile if you didn’t get it in the right place. Once you’re happy with the placement, push firmly on the tile for 3-5 seconds to secure it onto the mat. 

If you’re using mosaic tiles with a mesh backing like I did, you can easily pop a tile off or cut it out to reposition it if necessary. Many of my tiles were so wonky I couldn’t leave them how they came. You’ll want to pull them off BEFORE placing them on the adhesive mat. Once on the adhesive mat, they’re not going to come off!

Using the spacers that come with the mat, line up your next tile and place it on the mat. Keep repeating this process until you’re done.

Cutting the tile:

When you get to a point where you need to make a cut, it was fairly easy to cut the mosaic tile using just a tile cutter as long as the cut was in the center of the tile! Place the entire mat in the cutter, score the tiles using the scorer and then snap each individual one using the snapper.

Cut the extra tiles off using scissors or a sharp knife.

Step 5: Grout

You have 24 hours after placing all of your tiles to do the grout. I used Mapei grout, color: Biscuit. 

I prefer to use premixed grout because it’s easier. I thought that’s what I bought but turns out it was powder in a tub – who knew. After I mixed it following the instructions on the tub, then I smeared it into the grout lines using my grout float.

I find it easiest to scoop up a small fist size amount on the corner of the grout float and then move the float at an angle across the top of the tiles, pushing the grout into the lines. Scrape off excess grout left on the tiles.

Once you have applied all of the grout, take a wet sponge and wipe it over top of the tiles, removing as much of the haze as possible. About 30-60 mins later, do the same thing again to get the rest of the haze off of the tiles.

Let the grout dry for 24-48 hrs.

Step 6: Caulk

I used Mapei caulk in Biscuit to caulk along the outer edges of the tile.

Step 7: Paint Tile (optional)

The tile design for this project is really just cosmetic and serves no actual purpose. I used leftover paint from the desktop to paint the pattern directly onto the tile. 

I used a sharpie to mark each tile that would be painted.

I did no prep, and that is definitely not the “right” paint to use for painting tiles. It comes off very easily!  But, because this was just for looks and is such a small square footage, I did not care.

But let me be clear… I would NOT advise doing that for any other circumstance, really. 

Step 8: Add Trim 

I finished off the top and bottom borders with a small piece of painted, wooden trim!

Materials Needed

• MusselBound Adhesive Tile Mat
• Spacers
• Tile
• Level
• Razor 
• Tile Cutter
• Grout
• Grout Float
• Sponge
• Water
• Bucket
• Caulk
• Caulk gun
• Paint
• Paint brush
• Trim

I love how this DIY tile wall backsplash design completely pulled together my living room built-ins project and added great charm and character to our living room. It was an easy DIY backsplash that left a big impact! Remember, DIY isn’t about perfection; it’s about making your home a reflection of your style and effort. Whether this is your first tile project or just another notch on your DIY belt, your backsplash is a testament to your skills. What’s your next project going to be? Let me know in the comments—I’d love to hear all about it.