How Do You Seal Acrylic Paint On Concrete?

How Do You Seal Acrylic Paint On Concrete?

Guest Post by Ryan David

Acrylic painting on concrete is a simple way to turn any dull, boring surface into something eye-catching and unique. But if you’ve ever tried painting on concrete before, then you know that it can be tricky to get paint to stick.

Even after giving the concrete surface a good primer and multiple coats of acrylic paint, it may not last very long without proper sealing. So how do you seal acrylic paint on concrete?

Using this guide, we’ll discuss the basics of sealing acrylic paints on concrete surfaces and discuss some tips for getting accurate results.

How You Seal Acrylic Paint On Concrete?

With suitable materials and techniques, it’s possible to create beautiful art pieces that will look great on any concrete surface inside or outside your home. Let’s get started:

Step 01: Clean and Prepare the Surface

The first step in sealing acrylic paint on concrete involves removing debris such as dirt, dust, or other particles from the area. To ensure a smooth application of the sealant, it is crucial to pay extra attention when cleaning around cracks, corners, and edges.

After all visible debris has been removed, an optional concrete etching solution can be used to improve adhesion. This chemical solution should be applied according to the manufacturer’s instructions and rinsed off with lukewarm water using a pressure washer or brush.

Allow the surface to dry thoroughly before moving on to the next step.

Step 02: Choosing and Preparing the Sealer

When sealing acrylic paint on concrete, you can choose between water-based or solvent-based sealers.

  • Water-based sealers are usually used on interior surfaces and offer a low odor, easy cleanup, and non-yellowing properties.
  • Solvent-based sealers are typically used outdoors and provide better waterproofing protection with some yellowing effects.

Depending on your project size and desired outcome, you will need to determine the amount of coverage needed for adequately applying the sealer to your acrylic-painted concrete surface. 

Besides choosing between solvent-based or water-based sealers, you may also need to mix them with individual types. For example, if using a two-part epoxy system, mix the two components as directed for optimal results.

painting on concrete

Step 03: Applying the Sealer

  • Use a high-quality brush or roller to apply even coats of the sealer over the entire surface of the concrete.
  • Make sure you cover all areas you want to be sealed with an even layer of sealer, and check for any missed spots that may need additional coverage or overlapping.
  • Allow each coat of sealer enough time to dry fully before moving on to the next coat, as overlapping wet coats can mess up the final look of your project.
  • Be cautious when applying too much sealer, as this can lead to leaving behind a residue or streaking that may be difficult to remove later on.
  • Use tape and drop cloths as needed to protect any edges or areas that should not receive a layer of sealant while the application is taking place.
  • Once all desired areas have been covered with evenly applied layers of sealant, it is recommended that a clear polyurethane topcoat be applied to give an added layer of protection for your concrete-acrylic combination project.

Step 04: Finishing Touches

Once the final coat of sealer has been applied and dried, there are a few finishing touches to complete the job.


  1. i) Inspect the flow and level of each coat that has been applied to make sure it is adequately sealed. If there are any issues or areas of concern, enlisting professionals may be necessary for troubleshooting and repair.


  1. ii) Apply a protective layer of clear wax on top of the final coat of sealer to ensure long-term protection against UV rays and weather conditions.

This wax layer should not be too thick as it can affect the look and texture of the paint underneath. It should also be gently buffed into the surface with a clean cloth or brush to ensure even coverage.

iii) Lastly if desired, add a matte or gloss finish to enhance the look of your finished project.

With these finishing touches in place, you will have created an attractive and durable acrylic-painted concrete surface sealed for long-term durability.

Will Acrylic Paint Wash Off Concrete?

Yes, acrylic paint can be washed off the concrete with some effort. Concrete is a very durable material, so it can tolerate many common cleaning methods, such as scrubbing with a brush and soap, using a pressure washer or steam cleaner, and even chemical-based cleaners.

The key to removing acrylic paint from concrete is to pull the paint out of the porous surface. This may require multiple applications of cleaning solution and vigorous scrubbing, depending on how much paint has been applied and how long it has been there.

If chemical cleaners are used, they must be cleaned up thoroughly afterward to prevent damaging the concrete surface.

How Do You Make Acrylic Paint Waterproof on Concrete?

To make acrylic paint waterproof used on concrete, it is necessary to apply a sealer. Sealers are a type of protective coating that is applied to the surface of the paint to protect it from damage caused by moisture, contamination, and dirt.

Plus, sealers can also help to enhance the color of the paint on concrete, give it a matte or glossy finish, and provide protection against UV rays. Solvent-based and water-based sealers are both commonly used for acrylic paints.

Can You Use Acrylic Paint On the Cement Outside?

Yes, you can apply acrylic paint to the cement outside. Acrylic paints with sealer are especially suited for outdoor use, as they offer a durable and waterproof finish that is resistant to weathering and wear. This makes them ideal for concrete porches and walkways that have begun to show signs of deterioration.

Applying a new layer of acrylic paint along with a sealer will help revitalize the look of your porch or walkway while also providing protection against further damage from the elements.

To ensure optimal results, make sure to use acrylic paint that is specifically designed for exterior surfaces, as it will be more resistant to fading or peeling due to exposure to light or moisture.


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