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How to Color Exposed Aggregate Concrete


White exposed aggregate provides a gorgeous contrast to the rest of this concrete surface, creating visual interest.

Exposed aggregate concrete is a popular choice for driveways, patios, and other outdoor surfaces because it offers both durability and a beautiful, textured finish. But did you know you can customize the color of your exposed aggregate concrete?

Whether you're going for a bold statement or a more subtle look, coloring your exposed aggregate concrete gives you a wide range of design options. In this post, we'll walk you through the basics of coloring exposed aggregate and share some helpful tips so you can get the most out of your decorative concrete project.

The Two Key Elements in Coloring Exposed Aggregate

When it comes to exposed aggregate, there are two main things to consider: integral color and aggregate color.

  • Integral Color: This is the color you add to the concrete mix itself. It’s the base tone for your concrete, setting the stage for your aggregate to shine. Integral color can range from warm browns to cool grays and is the best way to ensure that your color is evenly distributed throughout the surface.
  • Aggregate Color: The aggregate (the stones, pebbles, or other materials) used in your concrete mix plays a major role in how your final surface will look. The colors and textures of the aggregate give the concrete its character, from natural, earthy tones to more vibrant options.

To achieve the exact shade you envision, it's essential to work closely with your ready-mix supplier. As John Reynolds of Solomon Colors advises, "Make sure you talk to your ready-mix company and get the right mix design." By collaborating with them, you can select the perfect combination of integral color and aggregate to bring your design to life.

How to Color Exposed Aggregate Concrete

1. Choose the Right Integral Color

Integral color sets the tone for your concrete, so you’ll want to choose a color that complements or contrasts with your chosen aggregate. For example, darker integral colors like charcoal or brown work beautifully with light or colorful aggregates, while gray exposed aggregate provides a neutral backdrop for almost any style.

920 Slate
920 Charcoal
920 Onyx
908 Ultra Black
750 Desert Tan
288 Straw
338 Leather
413 Terra Cotta

2. Pick the Perfect Aggregate

Now, let’s talk about the aggregate itself. When it comes to choosing aggregate, there are several options:

Aggregate type, size, and color drastically changes the look of a decorative concrete surface.

  • Crushed concrete
  • Crushed rock/stone
  • Gravel
  • Sand

The size of the aggregate you decide on also has a huge impact on the final look–you can choose anything from fine to coarse.

Additionally, the color of the aggregate in your concrete can completely change the look of the surface. There’s a wide range of options when it comes to exposed aggregate concrete colors, so you can get as creative as you want!

  • Black and white exposed aggregate creates a striking contrast that’s perfect for modern or minimalist designs.
  • Brown exposed aggregate offers a warm, earthy look that blends well with natural surroundings.
  • Charcoal exposed aggregate adds a contemporary, sleek feel, especially when paired with lighter integral colors.

3. Expose Your Aggregate with Precision

Properly exposing your aggregate is crucial to achieving your desired look. Brickform Select-Etch is a surface retarder that helps you control the depth of exposure. By adjusting the exposure level, you can create a range of effects:

  • Shallow Exposure: Reveals a subtle hint of the aggregate, allowing the base integral color to dominate for a softer, more muted look.
  • Deeper Exposure: Brings the aggregate's natural colors and textures into full view, adding vibrancy and contrast to your design.

By carefully controlling the exposure level, you can create a harmonious blend of colors and textures that complements your overall design.

Stencilwork elevates this exposed aggregate surface to create an eye-catching focal point.

4. Seal Your Exposed Aggregate Concrete

Sealing your exposed aggregate concrete is crucial to protect it from the elements and enhance its appearance. A high-quality sealer can not only protect your surface from stains, water damage, and weathering but can also enhance the color and texture of your aggregate.

Apply a glossy, color-enhancing sealer like Brickform Gem-Seal, which will bring out the vibrancy of your aggregate and make your design truly stand out. Or, if you want a natural look, use Stealth-Seal, which protects the surface with an invisible barrier.

Ideas for Taking Your Exposed Aggregate to New Levels

You can use other decorative techniques to enhance your project even further. Here are a few ideas:

  • Concrete stains: Use stains to add pops of color or to highlight certain areas. For example, adding a stain over your gray exposed aggregate concrete can create a unique two-tone effect. See Brickform’s staining options.
  • Saw cuts or stencils: Decorative saw cuts can turn your exposed aggregate into a beautiful pattern, mimicking tiles or creating custom shapes. Stencils can also be used for focal points or other design elements that fit your project.
  • Bands or Borders: Incorporate bands or borders of different colors or textures to add visual interest. This can be achieved using concrete stamps, contrasting color aggregates or integral color, or even different exposure levels of the same aggregate.

Your Exposed Aggregate Questions, Answered

Can you color exposed aggregate concrete?

Absolutely! You can color exposed aggregate concrete by adding integral color to the mix or by applying stains after the surface has been exposed.

What are the best exposed aggregate colors?

The best color really depends on your design preferences. Neutral tones like gray and brown are popular because they blend well with almost any landscape. If you want something more dramatic, black exposed aggregate can make a bold statement.

Does aggregate come in different colors?

Yes! You can find aggregate in a variety of colors, ranging from natural tones to more vibrant hues. There are even specialty aggregates like glass, metallic, glow-in-the-dark, and sparkling options. This gives you tons of flexibility when designing your surface.

Can you change the color of existing exposed aggregate concrete?

While it isn't common to change the color of exposed aggregate once it’s poured, you might be able to adjust the color of the concrete with stains or a tinted sealer.

Maintaining Your Colored Exposed Aggregate Surface

If you use the right coloring products for your job, the color will look beautiful for many years. Solomon Colors’ integral coloring systems never fade, providing lasting color. Secondary coloring products such as stains maintain their color for decades when the surface is cared for properly.

Maintaining your colored exposed aggregate surface requires the same effort as any decorative concrete surface:

  • Seal the surface (and reseal it as needed) to protect it from future stains. Learn more about sealing concrete.
  • Remove dust and debris from the surface regularly to prevent staining.
  • Wash the surface with a hose to remove stubborn spots.
  • Address stains, cracks, and chips in the concrete as soon as possible, using the correct products.

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