A concrete backsplash can add an industrial, modern look to any kitchen. Concrete is durable, easy to clean, and less expensive than other backsplash materials like tile or stone. With the right supplies and some DIY know-how, you can create a custom concrete backsplash that perfectly suits your kitchen’s style.

Choose a Concrete Mix

There are a few different concrete mix options for backsplashes:

Pre-Mixed Concrete

Pre-mixed concrete is readily available at home improvement stores. It typically contains cement, sand, and gravel. Pre-mixed concrete is the easiest option for DIYers. It mixes with water and is ready to apply. Look for a mix labeled for countertops or vertical applications.

Polymer-Modified Concrete

Polymer-modified concrete has polymers added to improve the strength and flexibility. This type of concrete finish is more durable and resistant to cracking. Polymer-modified mixes are pre-blended as well.

Concrete Mix with Aggregate

For a decorative, stone-like look, choose a concrete mix with aggregates like crushed glass, seashells, or stones. The aggregates are mixed with the concrete and exposed for the finish.

Cement Mix

Basic cement mix combines cement and sand. Cement mix takes more skill to work with and needs additives to improve the strength. But it allows for the most customization options.

For a first-time DIY concrete backsplash, a pre-mixed concrete is the best choice. Make sure the mix you choose is formulated for vertical surfaces.

Choose a Mold Material

To shape and build the concrete backsplash, you need to make a mold. The mold material determines the finish texture.

Wood

Wood molds, like medium density fiberboard, strip wood boards, or plywood, give concrete a smooth finish. Seal the wood well so that moisture doesn’t cause wood grain or seams to show.

Plastic

Plastic liners result in an ultra-smooth finish. Cut plastic sheets to size and secure to the wall tightly.

Cement Backer Board

For a rougher, stone-like texture, cement backer board makes an ideal mold material. The bumps and grooves of the backer board will show through the concrete.

Make Your Own Texture

You can create custom textures by pressing items into the cement backer board before applying concrete. Try troweling on a thin layer of concrete first to imprint the texture, letting it dry, then build up the full thickness.

Calculate Concrete Needs

Measure the backsplash area to determine how much concrete mix you will need. Most standard kitchen backsplashes use 2-3 bags of pre-mixed concrete. Estimate each bag will cover 5-10 square feet at 1-inch thickness.

Build the Mold

Cut mold material to size and secure it tightly to the wall over the backsplash area. Ensure seams are tight to prevent leaks. Seal wood surfaces for the smoothest finish.

Tips for building the mold:

Cover a slightly larger area than just the backsplash to make finishing edges easier.
Use screws or construction adhesive to firmly attach the mold.
Seal edges and seams with silicone caulk.
Use painter’s tape around the outer edges for clean lines.

Mix and Pour Concrete

Follow instructions on the concrete bag for mixing. The ideal consistency is like a thick pancake batter. Pour concrete directly into the mold immediately after mixing.

Concrete pouring tips:

Wear gloves and eye protection when working with concrete.
Spray mold with water first so concrete won’t slide around.
Pour in lifts, filling about 1/3 at a time, tapping mold to eliminate air pockets.
Allow each lift to set up before adding more concrete.
Overfill slightly to allow for finishing.

Finish and Cure Concrete

Once filled, strike off excess concrete with a trowel or board. Then use a float or trowel to level and smooth the surface.

Finishing tips:

Keep tools wet to prevent sticking and tearing.
For a rough texture, skip the smoothing steps.
To expose aggregate, press it into the surface as you smooth.
For color, mix in liquid cement color or dry pigments before pouring.
After initial hardening, mist surface with water and cover with plastic for curing.
Allow concrete to cure fully for several days before removing mold.

Remove Mold

Once concrete has hardened and cured, remove mold materials carefully. Start at the top and work downward.

Safe mold removal:

Pull nails and screws slowly to avoid cracking.
Cut wood or plastic molds with a utility knife rather than pulling off.
Use a hammer and nail set for stubborn nails.
Take your time and go slowly to avoid damage.

Finish Edges

Use a concrete angle grinder to smooth and shape the edges of the backsplash once the mold is removed.

DIY edge finishing tips:

An angle grinder with a diamond blade makes quick work of concrete grinding.
Go slow to avoid chipping the edges. Keep grinding pads wet.
Hand sanding with wet silicon carbide paper also works for smoothing.
Finish with a stone polish for a glossy look.

Seal and Protect

Apply a concrete sealer once grinding is complete. Sealers prevent staining, etching, and moisture damage.

Choose the right sealer:

Use an acrylic sealer for indoor concrete backsplashes.
Pick a non-toxic, food-safe formula for kitchens.
Allow sealer to fully cure for a few days before use.
Reapply sealer every 1-2 years for optimal protection.

With the right supplies and techniques, you can achieve a stylish, custom concrete backsplash. The finished project will add an urban loft accent to your kitchen.

Frequently Asked Questions About Concrete Backsplashes

Is a concrete backsplash better than tile?

Concrete and tile both make excellent backsplash materials. Concrete is generally cheaper than tile and allows for more custom designs. Tile comes in a wider variety of colors and patterns. Tile is also easier to install for DIYers. For aSmooth, modern look at a budget price, concrete is the better choice.

Does a concrete backsplash need to be sealed?

Yes, sealing a concrete backsplash is highly recommended. Concrete sealers prevent moisture absorption, which can cause cracks and stains over time. Unsealed concrete is prone to etching from acidic foods and liquids. A good sealer protects the finish and makes cleaning easier.

What kind of paint do you use on concrete backsplashes?

Concrete backsplashes do not require any paint. Concrete can be colored during pouring by adding liquid cement color or powdered pigments to the mix. If extra color is desired after installation, use specialty concrete stains and dyes designed for porous concrete. Never use regular wall paint on a concrete backsplash.

Can you put hot pots and pans on a concrete backsplash?

It is best to avoid putting hot cookware directly on a concrete backsplash. Extreme heat can damage the sealants. Allow pots and pans to cool slightly before setting them on concrete. Using trivets and hot pads is also a good idea to preserve your backsplash.

Does a concrete backsplash need maintenance?

Basic maintenance keeps a concrete backsplash looking its best. Use a pH-neutral cleaner for regular cleaning. Reseal the concrete every 1-2 years with an appropriate sealer. Watch for cracks or rough areas developing over time. If needed, concrete backsplashes can be patched, ground smooth, and resealed indefinitely. With proper care, it will last for many years.

Is concrete stain better than paint for backsplashes?

Concrete stains are definitely a better choice than paint for coloring a concrete backsplash. Stains penetrate and chemically bond with the concrete, while paint sits on top and can chip or peel. Concrete stains come in a variety of opacities from transparent to solid colors. Multiple coats can be layered to achieve the desired hue. Stained concrete maintains a natural appearance and texture.

Conclusion

Installing a chic, durable concrete backsplash is a manageable DIY project for the intermediate to advanced home renovator. With the right tools and careful preparation, you can achieve a seamless, stylish accent that upgrades your entire kitchen. The finished look of raw, urban concrete brings modern flair to any space. With just a weekend, basic construction skills, and these tips, you can add this of-the-moment feature to put a modern spin on your kitchen.

How to Do a Concrete Backsplash {MD}

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