Is Chalk Paint Waterproof? The Truth About Chalk Paint

Chalk paint has become a popular choice for DIY projects, especially when it comes to painting furniture. But one question that often comes up is: is Chalk paint waterproof?

Chalk paint is not waterproof, but it is water-resistant. This means it will not be permanently damaged by water or moisture but will not be impervious to it.

In other words, you can wipe off spills and splashes without fear of it staining or discoloring the paint. But if the paint is exposed to moisture for extended periods, it may start to fade or become discolored.

Keep reading to learn more about chalk paint’s water-resistant properties and how to protect your chalk-painted furniture from water damage.

Does chalk paint offer waterproof properties?

Chalk paint is not inherently waterproof. Traditional chalk paint, made from chalk, water, and pigment, is porous and absorbent. As a result, it can be susceptible to water damage, especially when exposed to excessive moisture or prolonged contact with water.

However, some modern variations of chalk paint include additives and sealants that improve water resistance and durability. These additives can make the chalk paint more water-resistant, but it’s important to note that it might not be completely waterproof.

You can apply a protective topcoat or sealer to enhance the water resistance of chalk paint or any porous paint. Wax and polyurethane sealers are commonly used to protect chalk-painted surfaces from water and other forms of wear and tear. The sealer creates a barrier on the surface, making it less permeable to liquids and increasing its resistance to water damage.

If you plan to use chalk paint for a project exposed to moisture, consider using a suitable sealer to protect the finish and extend the longevity of your painted surface. Always check the manufacturer’s recommendations and instructions for the specific chalk paint and sealer you use to ensure proper application and performance.

What is the Chemical Makeup of Chalk Paint?

Chalk paint is made from calcium carbonate, chalk pigments, and a binder such as linseed oil, acrylic, or latex. Calcium carbonate is the main ingredient of Chalk, which gives Chalk its unique texture.

The chalk pigments give the paint color and comprise various minerals, including titanium dioxide, iron oxide, and chromium oxide. The binder is used to bind the chalk pigments to the surface, making the paint durable.

The combination of these ingredients gives Chalk paint its unique matte finish and makes it easy to distress. The matte finish is created by calcium carbonate, which absorbs light and reduces the amount of shine. This also makes it easier to create a distressed look by sanding away the top layer of paint.

How To Make Chalk Paint Waterproof?

Water paint is water-resistant paint that can be applied to a variety of surfaces. It’s a great choice for outdoor furniture, walls, doors, and chalkboards. But while it’s great for protection, it’s not the most attractive choice.

To make your Chalk paint resistant to water and look great, you’ll need to make it waterproof. Here are the steps to make Chalk paint waterproof.

Step 1: Select A Good Sealer

You can make Chalk paint waterproof with various sealers like polyurethane, wax, water-based polyacrylic, and latex-based sealers. Each sealer has its advantages and disadvantages, so it’s important to select the right one for the job. For example, if you want a glossy finish, use a polyurethane sealer. However, if you want a matte finish, then you should use a wax sealer.

Step 2: Ensure the Paint Is Fully Dry

Before sealing your chalk paint, ensure it’s scorched. If you seal a wet Chalk paint, the sealer won’t adhere properly, and you’ll end up with a mess. Allow the paint to dry for at least 24 hours before sealing it.

Step 3: Apply Sealer In Thin Coats

Once your paint is dry, you’re ready to start sealing it. Apply the sealer in thin coats using a brush or a roller. Applying the sealer too thickly will take longer to dry, and you’ll have an uneven finish. For best results, apply at least two coats of sealer. Allow the first coat to dry before applying the second.

Step 4: Allow To Dry Completely

Once you’ve applied the sealer, you need to let it dry completely. Depending on the sealer you choose, this can take anywhere from a few hours to a few days. Once the sealer is dry, your chalk paint will be waterproof and ready to use.

Making your Chalk paint waterproof is a simple and effective way to protect it and make it look great. Follow these steps, and you’ll have waterproof paint that looks great and lasts for years.

Can You Use Chalk Paint for Waterproofing Projects?

Yes, you can use chalk paint for waterproofing projects. However, it is important to note that chalk paint is not naturally waterproof, so sealing with a wax or sealer is necessary for long-term water resistance. When painting over chalk paint DIY, make sure to use a waterproof sealer to protect your project.

Will Chalk Paint Wash off in the Rain?

Chalk paint is water-resistant, making it a great choice for outdoor projects. It can withstand light exposure to water, such as light rain if given sufficient time to cure.

However, if the paint is not properly applied or cured, it can easily wash off in the rain, so it’s important to ensure it is cured fully before exposing it to moisture.

But if you properly apply the paint and use a sealer like wax, you don’t have to worry about it coming off. If a sealer was used, the paint should be waterproof and not wash off in the rain. The sealer will create a protective barrier between the paint and the elements, making it more durable and lasting longer.

7 Cheap and easy Chalk Paint Sealing Hacks


Chalk paint is not waterproof on its own. However, it is highly resistant to elements such as water, mildew, and dirt due to its chemical makeup. It can be made waterproof by adding a sealant such as a varnish or wax. With proper care and maintenance, chalk paint can last years and maintain its original appearance.

Leave a Comment