Is Air Dry Clay Waterproof? (Know About waterproofing)




In my last semester I started a pottery project which is based on air dry clay. This was the group work. We all are succes to made some traditional items. The final look of the projects just looks like a Wow. And we all are confused about  is air dry clay waterproof? Then we all researched this, and the short answer is,

No, air dry clay is not waterproof. It may absorb moisture or start to dissolve if it comes in contact with water.

Is Air Dry Clay Waterproof

In this article, I will share with you what we are finding out together. By reading all the methods, you can make your air-dried clay projects waterproof.

Key Findings

  • Air-dry clay is not waterproof and can absorb moisture.
  • To make air-dry clay waterproof, apply a waterproof sealant, varnish, resin, etc.
  • Waterproof coating can protect it from moisture, dust, and other elements.

What Kind Of Clay Is Waterproof?

Polymer Clay is a type of clay that is waterproof. It is a versatile medium and easy to use, that’s why it’s popular choice. Polymer clay is made from PVC. But you can’t polymer clay in the air dry. You have to cure in relatively low temperatures in the oven. 

What Kind Of Clay Is Waterproof

Once your polymer clay is cured, it becomes solid and waterproof. The waterproof nature of polymer clay makes it an ideal material for creating jewelry, home decor, and other items. It comes in a wide range of colors and can be molded into almost any shape you desire.

Is Air Dry Clay Waterproof?

No, air dry clay is not waterproof. Air Dry Clay is made of natural clay minerals, water, and sometimes fibers. This  ordinary clay are also known as traditional clay.

This type of clay does not require baking or firing in a kiln to harden. That’s why it is the perfect material for your kids. It simply hardens when exposed to air. The time to take air-dry clay depends on the size and thickness. But it is not waterproof. If air dry clay gets wet, it will absorb the water and become soft again. But with proper maintenance, you can keep your air dry clay from cracking.

However, if you want to make your air-dry clay waterproof, this is a very easy task. Just apply a waterproof sealant or varnish to the surface of the piece. This can protect your clay from moisture. You can also paint your air dry clay as you wish. 

Paint for air dry clay is one of the enjoyable parts of my whole project. But it may only make it partially waterproof. Air-dry clays are best for pottery use. Some air dry clay ideas are earrings, candle holders, Vases, dry clay sculptures etc.

Why Should You Varnish Air Dry Clay?

Varnishing air clay is crucial for your air drying clay for several reasons:

Why Should You Varnish Air Dry Clay
  • Varnish adds an extra protective layer to the clay.
  • It saves your clay from dust, moisture, and other elements that could damage it over time. 
  • Varnish can make your clay projects more durable.
  • Varnish can enhance the appearance of your clay projects by giving them a glossy or matte finish.
  • Varnish can make your clay more vibrant with more colors.
  • Varnish also adds a professional touch to your work.
  • The layer of varnish can help prevent water damage.
  • Varnished clay projects are easier to clean.
  • Varnishing can help prevent the colors from fading over time.

Can You Make Air Dry Clay Waterproof?

Yes, you can make air-dry clay waterproof. Once your clay piece is completely dry, you can apply a waterproof sealer to protect it from moisture. If you want to make it waterproof, you must use a waterproof sealer. Apply your sealer with a paint brush and ensure all surfaces are covered. If you notice your clay is not covered completely, then you may apply multiple coats. 

What Can Be Used To Make Air Dry Clay Waterproof?

Here are the materials that you can use to make air-dry clay waterproof.

  • Acrylic Paint: This is one of the most common methods of making air-dry clay waterproof.
  • Sealant: After the clay has dried, you can apply a sealant to make it waterproof. There are many types of sealants available. Such as spray sealants, brush sealants, and even sealants that you can dip in the clay.
  • Varnish: Using a clear air dry clay waterproof varnish can also help to make air-dry clay waterproof. Varnish for air dry clay method not only protects your clay from water but also gives it a shiny finish.
  • Resin: Resin is another material that can be used to waterproof air-dry clay. It provides a hard, durable surface that is resistant to water. Are you thinking is air hardening clay waterproof? Yes, If you follow the following process.
  • Wax: You can also use wax to make air-dry clay waterproof. Melt the wax and then dip the clay into it.
  • Glaze: A ceramic or pottery glaze can also be used to waterproof air-dry clay. This method generally requires the clay to be fired in a kiln after the glaze is applied. But when you apply glazes, you must be sure your glaze is food-safe. This is the first step of how to make air dry clay food safe.

How To Make Air Dry Clay Waterproof?

Are you thinking, can i waterproof air dry clay? Here is the process of how can you make air dry clay waterproof?

How To Make Air Dry Clay Waterproof

Step 1: Gather Your Materials

Arrange the materials you need for this process. They are –

  1. air dry clay, 
  2. a paintbrush, 
  3. acrylic paints, 
  4. acrylic sealer, and 
  5. water.

Step 2: Shape Your Clay

Before starting the clay drying process, shape it into the form you desire. This could be a sculpture, a pot, a plate, or any other form. Ensure that the clay is smooth and free of any cracks or crevices.

Step 3: Dry Your Clay.

Allow your project to dry completely. The drying time will depend on the size and thickness of your clay project. It could range from 24 to 72 hours. Make sure the clay is thoroughly dry before proceeding with the next step.

Step 4: Paint Your Project (Optional).

If you wish to paint your project, do so after the clay has dried completely. Use acrylic paints and let your creativity flow. After painting, allow it to dry completely.

Step 5: Apply Acrylic Sealer

Once the paint has dried, apply a coat of acrylic sealer for air dry clay with a paintbrush to the surface of your clay project. The sealer will give your project a glossy finish and will also act as a waterproofing agent. Ensure that the sealer covers every part of your project, especially the crevices. 

Step 6: Allow the Sealer to Dry.

Let the sealer dry thoroughly. This could take several hours or even a full day, depending on the size of your project and the thickness of the sealer layer. The best sealant for air dry clay is Mod Podge.

Step 7: Apply a Second Coat (Optional).

For best results, apply a second coat of sealer after the first one has dried completely. This will ensure that your project is fully waterproof.

Step 8: Drying the Final Coat

Allow the second coat of sealer to dry completely. If your coat is not completely dry, it can create a rough texture. This is the process of how to seal air dry clay. Don’t worry if you are thinking is air dry clay waterproof once dry? Yes, it is waterproof now.

Step 9: Test It

Once your project is dry, you can test its waterproofing by placing it under a small stream of water. If the water beads up and rolls off, your project is successfully waterproofed. 

What Happens When Air Dry Clay Gets Wet?

When air dry clay gets wet, it can become soft and malleable again. It may lose its shape and color. If it gets too wet, it can dissolve or turn into a muddy consistency. 

If the clay has been dried and painted, water can cause the color to fade or wash away. Therefore, it’s generally recommended to avoid getting air-dry clay wet after it has dried.

Frequently Asked Questions (Faqs)

Is Crayola Air Dry Clay Waterproof?

No, Crayola air-dry clay is not waterproof. If you are still thinking about is jovi air dry clay waterproof, is fimo air dry clay waterproof, is das air dry clay waterproof. well, the answer is Jovi air-dry clay, Fimo air dry clay, and Das air-dry clay are not waterproof.

Can Air Dry Clay Go Outside?

Yes, air dry clay can go outside, but it’s not the best choice for outdoor use. This is because air dry clay is not waterproof.

How Long Does Air Dry Clay Last?

Air-dry clay can last up to 12-15 months if it is stored properly. Once it has been opened, it should be used within a month for best results.

How Strong Is Air Dry Clay?

Air-dry clay is relatively strong once it’s fully dried, but it’s not as durable or resistant as kiln-baked clay.

Can I Reuse Air Dry Clay?

No, once air dry clay has dried it cannot be reused. Once dry it hardens and becomes solid. However, if the clay is still wet or hasn’t fully hardened, you can still work with it and reshape it.


Reading all of the passage about  is air dry clay waterproof? Hopefully, it is clear to all of you that Air Dry Clay is not waterproof. At the same time, it’s a versatile and convenient material for many crafts and projects.

Therefore, if you plan to make an air-dry clay project, then it’s crucial to seal it properly with a waterproof sealer or varnish.

About the author

Written By

William Prince

William Prince

Meet William Prince!

With over 20 years of ceramic artistry experience, William Prince is not just a skilled potter; he’s a passionate guide to your pottery journey. William holds a Fine Arts degree specialized in pottery and he was also nurtured under the guidance of renowned potters. With over two decades of experience, he seamlessly blends tradition with contemporary aesthetics.

William’s inspiration stems from nature’s imperfections, translating them into unique, organic pottery pieces. As a patient and warm-hearted teacher, he’s known for conducting pottery workshops and classes, nurturing talents with his expertise. Join William on “” and let his mastery inspire your own pottery adventure. Uncover the magic of crafting pottery with a trusted mentor who’s dedicated to both the art and the artist.

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