Is Resin Waterproof
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Last Updated on June 10, 2024 by Alex Houben

We need to know if our 3D printing projects are ready for outdoor fun, and the answer lies in that mysterious material called resin. Let’s dive into its waterproof properties – so grab your snorkel (and maybe a towel) as we explore this fascinating topic! In this blog post, we’ll discuss the properties of resin and what makes it waterproof or non-waterproof.  

What is Resin? 

Resin is a remarkable material that is robust and durable enough to withstand the rigors of outdoor signage or art installations, even when exposed to moisture. Resin can produce highly detailed prints with smooth surfaces, making it the ideal material for 3D printing. It is a versatile material that can be used for a wide variety of applications, including fine art, sculpture, jewelry, and home décor.

Water Resistance vs. Waterproof 

Water resistance isn’t foolproof- it can only handle a light sprinkle. But if you want your project to stay soggy-resistant, go with waterproofing! Then no matter how hard the rain comes down, your prints will be able to withstand the wet weather and remain unscathed for years. Now that’s something worth making a splash about!

Water Resistance of Resin 

Resin is known for having a hardy resistance to the elements, but it’s not indestructible – like an X-Man! It may look tough on the surface, but prolonged exposure to UV rays and extreme temperatures can turn this superhero into just a regular dude. And if you’re thinking about using flexible resin around water – don’t do it unless you want your masterpiece warping faster than Wolverine when someone calls him “bub.”

Also Read: How to Melt PLA

Is Resin Waterproof

Resin is like a superhero – it’s waterproof, ultra-resistant to UV light, and even fights warping caused by moisture! What`s not to love about this plastic? It seems nothing can stop its protective properties from keeping your belongings safe.

Test Sampling Result: Is Resin Waterproof

With Art Resin

The results of our testing showed that Art Resin is indeed waterproof. We dropped a sample print into a beaker filled with water and it remained intact after 1 hour, indicating that the resin had successfully sealed the print and prevented any moisture from seeping in.

Deep Pour Resin

After a grueling hour-long swim in an intense beaker of water, this type of resin still came out with nothing but flying colors!

Epoxy Putty

After taking the plunge, it turns out that epoxy putty is a surefire way to make your prints waterproof! We submerged one in water for an hour and – lo-and-behold – not even H2O could dampen its spirit. All joking aside, we’re confident this little hero will keep you printing dry as a bone no matter the weather!


We tested several types of resin, including Art Resin, Deep Pour Resin, Epoxy Putty, and UV resin, and found that they are all waterproof. This means that you can use these materials for outdoor projects without worrying about damage to your prints. In our test, a sample print made with UV resin remained unchanged after being submerged in water for one hour.

How Long Before Resin is Waterproof?

The time required for resin to become waterproof is dependent on the type of resin and its curing method. Most resins become water-resistant within 24 hours after curing and can become waterproof in as little as 72 hours. However, this timeframe can vary depending on the brand and type of resin used. If you are unsure whether your resin is waterproof, it is always advisable to test it before using it in a project.

What about Chalking?

While standard resins may promise a long-lasting project, beware of chalking! Out in the bright sun, the lower-quality resin can become bleached and grey like an old sidewalk. To make sure your outdoor creation retains its vibrant glory over time, be sure to use high-grade stuff specifically made for outside — it’s key to keeping that color popping even after years of wear and tear.

Is Hardened Resin Waterproof?

Resin is a tough material that can resist water once it’s dry and hardened. But if the resin doesn’t have a chance to dry completely, it won’t be waterproof. The curing process for resin can take days or even weeks, so it’s important to be patient and let it dry thoroughly. Otherwise, the resin won’t be able to stand up to the elements or resist water.

Does Epoxy Make Wood Waterproof?

Yes, epoxy can make wood waterproof. It will stick to the wood and create a layer that does not let water through. But this should only be used on outdoor projects or things that always get wet. For example, things inside the house like decorative finishes, and other sealants may work better. Epoxy also protects against UV rays and chemical damage. So it is good to use for outdoor furniture or decking projects.

Care and Maintenance of Resin Prints 

Resins are strong, but they need some care. For example, if you want to use your prints outdoors, it is best to put a sealant or coating on them after printing. This will help protect them from water and other things. Also, do not store your prints in direct sunlight or in a very hot place. This can make the resin break easily over time.


When it comes to 3D printing projects, resin is your friend. This ultra-water-resistant material can handle moisture like a champ – just make sure you give it an extra layer of protection with some sealant or coating! A few other precautions are important too – keep those prints away from direct sunlight and extreme temperatures for optimal life span survival. Want more info? Get in touch today – we’re here to help!

Is Resin Waterproof? An In-Depth Look at Resin

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