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Can Chalk Paint Be Used Outside?

Most times, the type of paint used in the interior part of the house differs from the one used outside. Using paint meant for the interior part of the house outside will result in a bad painting job. That is why it is important to figure out the type of paint you need for a particular painting project.

One of the popular types of paints used for DIY projects is chalk paint. If you want to know if you can use the chalk paint outside, this post is for you. It also covers other things you need to know about chalk paint. That includes the do’s and don’ts of using chalk paint, sealing chalk paint, and many more.

What Is A Chalk Paint?

Chalk paint was first invented by Annie Sloan. It doesn’t mean that the paint contains chalk in its literal sense. Chalk paint is a water-based decorative paint. It is called chalk paint because of its matte and chalky appearance. Chalk paint can be used on almost any surface like wood, walls, fabric, and metals. These days, there are many brands of chalk paints out there.

The good thing about the chalk paint is that you don’t do any prep work or prime before you use it. You can simply paint over the surface. For other paints, you need to sand and prime before you use them on a surface.

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Also, chalk paint is easy to clean. Since it’s a water-based paint, it doesn’t need chemicals to clean. All you need is just water and soap to clean.

Also, chalk paint doesn’t drip like other types of paint sheen because of its thick consistency.

Can Chalk Paint Be Used Outside?

Yes. You can use chalk paint outside. This is because the chalk paint is water-resistant and can withstand exposure to weather and elements. But it is not advisable to use chalk paint on outside furniture made of hardwood. After painting with chalk paint, it is advisable to keep the painted item indoors for at least 4 days to allow it to dry.

How To Protect Chalk Paint Outside?

Using the chalk paint outside exposes it to UV rays, water, and other elements. This can damage the painting if left unprotected. Remember that chalk paint is water-resistant and not waterproof. Meaning that it can only resist water damage for a while.

The best way to protect chalk paint outside is to seal the surface with either a sealer or a lacquer. If the surface is horizontal, then it is advisable to seal with Lacquer with UV protection. For other surfaces, you can seal with an exterior varnish or exterior polyacrylics.

How To Seal Chalk Paint?

Step 1. Prepare The Surface

First, you have to allow the chalk paint to dry on the surface. After that, wipe the dried surface with a lint-free towel or rag to remove dust.

Step 2. Prepare The Sealing Product

There are different sealing products out there. Choose the best product that fits your needs. To prepare the sealing product, stir or shake the sealer. Also, wet the applicator and get ready for the sealing process.

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Step 3. Seal

Dip your applicator inside the sealer and move across the painted surface. First, you need to move the brush across the entire surface you want to seal.

Step 4. Sand

Allow the sealer to dry, then sand using a 220 grit sandpaper.

Step 5. Apply Multiple Coats

It is advisable to apply multiple coats, depending on the weather in the location and the sealer product. But for the best result, seal 3 to 4 times.

Do’s and Don’ts of Using A Chalk Paint

In other to get the best of chalk paint, there are some do’s and don’ts you need to observe.

Do’s Of Using A Chalk Paint

a. Always wipe the surface to remove dust and dirt and cobwebs before you apply the chalk paint.

b. It is advisable to remove rust or old peeling paint before you apply chalk paint. Painting over old peeling paint will cause your new paint job to flake over time. For a metal surface with rust, seal the surface before you paint.

Don’ts Of Using A Chalk Paint

a. Don’t commence a painting job outside if it will rain the same day. The rain will wash off the paint. It is best to check the weather forecast before you start painting.

b. Don’t sand the surface before you paint with chalk paint.

c. Don’t apply multiple coats when applying lacquer.  

Does Chalk Paint Wash Off In The Rain?

Yes. Chalk paint can wash off in the rain because it is not waterproof. It is rather water-resistant, which means that it can withstand rain for a limited time. If you intend to use the chalk paint in a water-prone area, it is advisable to seal the surface after painting. Note that sealing chalk paint doesn’t make it waterproof, but it will help it withstand water for a longer period.

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How Long Should You Leave Between Coats Of Chalk Paint?

It is advisable to wait till 24 hours between each chalk paint coat. That means that you should leave for at least 24 hours before you use it.


This post has answered most of the questions you will probably have about using the chalk paint outside. Also, how to seal a chalk paint surface and the do’s and don’ts of using the chalk paint outside have been outlined.