Can Chalk Paint Be Used Outside?

Yes, it is possible to apply chalk paint outdoors in certain circumstances. As with interior chalk paint, you do not have to prepare or condition the outdoor furniture, as you would with inside chalk paint. Chalk paint lacquer is the most effective solution to preserve your outdoor furniture from ultraviolet radiation, deteriorating paint colors, and flaking paint resulting from water degradation. Chalk paint is not damaged by water in any way. If the area will be immersed in water, a varnish sealant will be necessary. Water-damaged surfaces must not be treated with this solution. 

Can Chalk Paint Be Waterproofed? 

Chalk paint is water-resistant, making it a good choice for outdoor projects. If the area is immersed in water, it is necessary to use a lacquered sealant. Waterproofing is not possible with this product, therefore it shouldn’t be used for areas that are constantly in exposure to water.

Many people online have reported that they applied a waxed protective coating over the chalk paint, although these people are likely to reside in dry climates with little precipitation, as wax top coatings are intended for protective measures rather than particularly for waterproofing chalk paint. While it’s true that buying your chalk paint from your traditional handicrafts or home improvement store can save you money, you often can save even more money by purchasing your wax at the same time.

Because acrylic sealant products provide excellent protection, if you live in a region with significant precipitation that lasted at least just a few months, we suggest that you use an acrylic finishing solution rather. In comparison to acrylic sealants, the wax topcoat formulations provide better all-around protection, along with some thermal protection and improved ultraviolet (UV) coverage, which the acrylic sealants do not always provide.

Will Polyutherane Help in Waterproofing Chalk Paint?

We wouldn’t advise using a polyurethane sealer on the chalk paint because it is the poorest technique of waterproofing the chalk paint in our perspective, for either of the solutions listed beyond is a preferable option for most individuals. 

There have been indications articles about people claiming that their polyurethane sealer has provided some waterproof coverage for their chalk paint, it can be challenging for us to determine whether this is attributable to the sealer or the chalk paint’s innate water-resistant characteristics because most of these individuals live in places with little rainwater.

The polyurethane materials, which are comparable to acrylic sealant solutions, provide a layer atop the chalk paint that prevents the flaky chalk paint from spreading to clothes when it comes into contact with the surface, so providing that benefit. As most of these items are water-based, experts are still cautious about the overall level of waterproof coverage that they provide. Because torrential rain will typically rinse them away, they are not just a great alternative if you live in a neighborhood that receives a lot of rainfall.

Will Chalk Paint Wash Off With Water?

The use of poor quality chalk paint formulae, the application of chalk paint to unsuitable surfaces, and the use of chalk paint on outdoor surfaces that have not been sealed can all result in the paint coming off in water over time. Although water can remove chalk paint owing to just one of these causes, they compound with one another, leading the chalk paint to be removed significantly more quickly if two or all three of these causes are present at the same time.

In the case of a low-quality chalk paint mixture, water will usually remove it over time, especially if it is raining in a color-rich environment. Using a low-quality chalk paint recipe, applying it to an unsuitable surface, and not sealing the chalk paint on a surface that will be exposed to the elements may allow rainwater to easily dissolve it.

What is the Timeframe for Chalk Paint to Dry and Cure?

There is a substantial difference between dried chalk paint to cured chalk paint in terms of appearance. Whereas the visual aspect of the paint would not differ between both the dried paint as well as the cured paint, the touch sensation will differ between the two. 

Even with only minimal stress exerted with a finger, dried paint will flake and peel if the surface is not properly prepared. Gentle stress on cured chalk paint would not cause it to scrape. Waiting approximately 24 hours for the paint to be properly set is standard procedure in most cases.

Allowing the chalk paint to completely dry preceding applying a second or even third coat is essential for successful application. It is not necessary to wait for it to dry before applying an additional layer of paint. To ensure that your chalk paint is completely dry prior to waxing or applying an additional protective coating, allow it to cure for several days. 

You would like to wait for at least 24 hours preceding applying any varnish or protective coating to the surface. Failure to allow the paint to cure completely preceding applying a protective coating increases the likelihood of the paint being pulled up.

How Do You Seal Chalk Paint for Outdoor Use?

Many chalk paints will not necessitate sealing before being used outside; but, if you want to be extra safe, you might use a multi-purpose sealer that will preserve the painted furniture from the precipitation and the sunlight and its ultraviolet rays. It operates by increasing and decreasing the water surface, which is extremely significant throughout high and low temperatures. Transparent wax applied over chalk paint will intensify the hue and give a gorgeous, flat appearance, while also extending the life of the paint. Fingermarks and smears will be prevented by using this product. As an added bonus, it is water-repellent, so any stains may be removed with a moist towel.

Can Chalk Paint Be Applied to Outdoor Concrete?

Apparently, chalk paint is effective outdoors! In general, it performs well throughout brickwork, cement, sandstone, and clay – so there is no need to protect the area if the face is vertical, as it does on horizontal surfaces. Chalk varnish can be used on flat surfaces, as well as on patio furniture and other outdoor furniture. 

If you use chalk on a freshly poured pavement or roadway, it is likely that the colors will seep into the highly porous characteristic of the concrete. If you use chalk on an old pavement or parking space, the colors may soak into the old crevices. If you apply chalk marks on concrete or built ground that has been in place for further than two years, the marks will most likely soak up with the very first rainfall.

How to Seal Chalk Paint When Used Outdoors?

It might be a simple decision with your next job because of the easiness and variety of all the chalk and restoration paints available in the marketplace. You may be questioning how to preserve and maintain your beautiful painting creation once it has been completed. Take into account using a few of these chalk paint finish alternatives for the piece, based on its functions and how you want it to appear. This will help you identify which sealing agent works best for your painting project. 


Upholstery wax or putty is a paste-like product that you add to the surface using a rag circular soft brush before buffing it away. It normally creates a subtle, matte finish and is available in a range of shades to allow you to personalize your final look.

Topcoat Spray

Transparent spray topcoats might come in handy when you’re in a hurry or need to preserve a piece that has a lot of crevices to shield. Spray topcoats are usually a polyurethane formulation, and while they are long-lasting, this can be hard to obtain an even finishing with these products.


The glaze is a sticky substance that you use and then sweep away leftover to give the appearance of being worn in some way. Although it may not be the most lasting finish, it may offer a great deal of roughness and artistic value to the product based on the color you choose.


Polycrylic is a term used to describe a water-based form of the polyurethane compound. It can be spread with a paintbrush or spray-on, and it shares most of the same characteristics as oil-based polyurethane in terms of performance. Many people feel it to be more user-friendly than standard polyurethane.


Having your chalk-painted surface raw, or without a finish, is the most straightforward approach that results in the lowest amount of change to the surface. Providing zero protective agents, on the other hand, means that your piece is subject to the environment, wear and tear, and spontaneous fading, among other things.


Polyurethane is a transparent liquid oil-based topcoat that is smooth and glossy. A paintbrush or a spray gun is used to apply it. This is the most resilient finishing available, making it a great choice for high-traffic areas and items that are susceptible to water damage.