DIY Concrete Molds

Concrete is no longer just for sidewalks and driveways. Over the past few years, it has stepped inside the home and made its mark on modern interior design. From minimalist candle holders to sleek planters and custom countertops, concrete offers a raw, sculptural beauty that fits into a wide range of décor styles.

And the best part? You can make your own concrete décor pieces with DIY molds—right at home.

Why Concrete?

Before diving into the DIY, let’s talk about why concrete has become a favorite among interior design enthusiasts:

• Versatility: You can mold it into virtually any shape.

• Durability: It's long-lasting and strong.

• Affordability: Concrete mix is inexpensive and widely available.

• Style: Its raw texture and neutral color palette complement minimalist, industrial, Scandinavian, and even boho interiors.

What Can You Make with DIY Concrete Molds?

Here are a few popular concrete décor ideas you can make at home:

• Candle holders

• Planters and pots

• Coasters and trays

• Wall hooks or knobs

• Bookends

• Lamp bases

• Custom wall art

Once you learn how to create a mold, the possibilities are nearly endless.

Materials You'll Need

For the Mold:

• Plastic containers (takeout containers, yogurt cups, Tupperware)

• Silicone (for more complex or reusable molds)

• Cardboard (for one-time-use custom shapes)

• Hot glue gun

• Cooking spray or mold release spray

For the Concrete Mix:

• Quick-setting concrete or cement (look for smooth/fine mix)

• Water

• Mixing container

• Stirring stick or spatula

• Gloves & safety glasses

Step-by-Step: How to Make a DIY Concrete Mold

Step 1: Choose or Build Your Mold

Start simple. Look around your kitchen or recycling bin—plastic containers make excellent molds for beginners.

Want a unique shape? Use cardboard and hot glue to build a custom mold. Seal the inside with packing tape or plastic wrap to prevent leaks.

Pro Tip: Use two containers to create a hollow space—for example, to make a planter, place a smaller cup inside a larger one and center it.

Step 2: Prep Your Mold

Spray the inside of your mold with cooking spray or a commercial mold release agent. This helps you remove the concrete once it's set.

If you’re using a two-part mold (like a planter), make sure the inner mold is weighted or glued down so it doesn’t float.

Step 3: Mix Your Concrete

In a mixing bowl or bucket, combine your concrete mix with water according to the package instructions. Stir thoroughly until the mix reaches a pancake-batter consistency.

Optional Add-ins:

• Pigment powders (for color)

• Pebbles, glass, or shells (for texture)

• Wire or hooks (to embed hanging hardware)

Step 4: Pour and Tap

Pour the concrete into your mold slowly to avoid bubbles. Tap the sides of the mold and shake gently to release trapped air.

Let it sit undisturbed on a level surface.

Step 5: Let It Cure

Drying time depends on your mix, but 24–48 hours is a good rule of thumb. Don’t rush it—concrete gets stronger over time.

After curing, carefully remove the mold. For plastic or silicone, this should be easy. For cardboard, you may need to peel or cut it away.

Step 6: Finishing Touches

• Sand rough edges with fine-grit sandpaper.

• Seal with concrete sealant if you want a water-resistant or glossy finish.

• Paint or stain if you want color accents or decorative patterns.

  
  

Pro Tips for Better Results

• Always wear gloves and work in a well-ventilated area.

• Use a concrete mix labeled “fine” or “smooth” for small decorative items.

• Try adding rubber feet or cork pads to the bottom of finished pieces to protect surfaces.

• Experiment with layering pigments or using painter’s tape to create clean lines for paint designs.

  
  

Creating your own concrete home décor is not only fun and affordable, but it also allows you to bring your personal style into every corner of your space. Whether you’re going for a clean modern vibe or something more rustic and handmade, a DIY concrete mold project is a satisfying way to make functional, beautiful items that last.

So, grab some containers, mix up a batch of concrete, and start crafting. You might just surprise yourself with what you can create.

Ready to start your first concrete project? Comment below with what you plan to make—or share your own DIY concrete tips!