How do you make resin coasters heat resistant?

The simple answer is: you can’t, at least not without adding a lot of extra steps to the process. First, let’s talk about what is going on here.

Resin is made from two liquids that are placed in a mold and then cured under a UV light. After it cures, it’s bonded together into one piece.

When we’re talking about resin coasters, you’ll notice there are two main types: poured-on and self-adhesive (SA).

Poured-on ones need to be sealed with some kind of sealant so they don’t absorb moisture from your drinks but still allow them to be washed off after use; SA ones do not require any sealing because they have glue already applied on each side before shipping out!

How do you make resin heat resistant?

  • Use a resin that is heat resistant. The most important thing to remember when making resin coasters is that you should use a heat-resistant resin. Some resins, such as crystal clear and iridescent, aren’t heat resistant at all and will melt when they are exposed to high temperatures.
  • Use low melt point resins. If you don’t want to buy new materials for your project, there are other options available that can help make your resin coasters heat resistant without changing what kind of resin you use or buying new supplies. A low-melt point epoxy works well for this purpose because it melts at much lower temperatures than other types of epoxies do – at only 250°F (121°C) – so it won’t be damaged by the heat from your hands while holding the coaster.[3]
  • Buy resins specifically made for craft projects like glassware etching glue and craft glues instead of using standard household adhesives like super glue or contact cement which have higher melting points than these specialty products.[4]

How do you make coasters heat resistant?

So you want to make coasters that are heat resistant? There are a few things you can do:

  • Use a heat resistant resin. If you’re using clear resin, be sure to use a UV cure (or “no-bake”) resin.
  • Use a heat resistant pigment. For example, we love our new high heat reactive pigments—they not only stay clear when heated but they also glow like crazy!
  • Use a color that is known to withstand high temperatures—like this one from DecoArt! Or if you’re feeling adventurous and have enough time on your hands…you could try your hand at making your own custom colors from scratch!
  • Glaze the coaster with something that is known for its tolerance for high temperatures (like this glaze). You’ll have to wait for it to dry before sealing, but once you’ve done so it will remain heat resistant forever!

Does resin resist heat?

Resin is a thermosetting plastic. This means that it has a chemical reaction that cannot be reversed when heated. In other words, once you put resin in the oven or microwave or on the stovetop and heat it up, you can’t undo this process by putting it back in cold water.

If your resin gets too hot while curing, it will become brittle and break apart into tiny pieces.

Therefore, you should make sure to always use appropriate care when working with hot items like ovens or microwaves!

Will resin coasters melt?

The short answer is no. Resin is a thermoset plastic, meaning it has been heated and cooled to a point where it will not change into another form again. This makes resin extremely durable and therefore heat resistant.

Can resin coasters withstand heat?

Resin is a heat-resistant material. The resin coasters you make can withstand temperatures up to 100 degrees Celsius.

This means that the resin coaster will be able to withstand most types of hot drinks, but you should still keep it away from any food or drink that can’t handle some heat.

Resin is also waterproof, so if you spill something on one of your coasters, it won’t damage the coaster. This makes them perfect for barbecues and parties where there are lots of drinks being served!

Can you put hot mug on resin coaster?

Resin coasters are a great way to add style and warmth to any table. Resin is a durable material that can handle the wear and tear of daily use, but it isn’t necessarily heat-resistant.

If you like enjoying your morning coffee or tea while reading the news, resin coasters may not be the best option for you. That’s why we created our Heat Resistant Coaster Set!

The first thing we did was make sure that our resin would withstand hot drinks without cracking or melting—you don’t want your new coaster falling apart when it touches something wet!

We also wanted these coasters to look as good as possible so we used high-quality materials for their design: laser cut wood veneer, heat resistant cork backing, and 3M™ adhesive stickiness on the bottom of each one.

Plus they have an understated elegance that adds sophistication to any room

How do you seal resin coasters?

You have several options for sealing resin coasters. If you want to waterproof them, but don’t want them to be heat resistant, use a clear sealant that is waterproof and heat resistant.

If you are looking for both properties in one sealant, look for something labeled as “heat resistant”.

If you choose this option, apply it in thin layers with a brush or cloth until all of the coaster’s surface area is covered by an even film of sealant.

Allow your coasters to dry completely before using them because water can seep into the material if they’re too wet.

You can clean resin coasters by wiping off any dirt or debris with a damp cloth or paper towel; acrylic paint will stain them if left on long enough so be careful when handling painted surfaces!

How do you waterproof homemade coasters?

How do you waterproof your homemade resin coasters?

You will need:

  • craft or resin sealant. You can find this at any craft store. This will make sure the coaster is waterproof and protected from scratches and spills.
  • good quality resin. The higher the quality of your resin, the better it will turn out in the end!
  • heat resistant resins (if you want a coaster that can withstand high temperatures)


We hope this guide has helped you understand the different ways to make resin coasters heat resistant. If you have any questions, feel free to ask us in the comments section below!

Also, if you’re looking for more inspiration on how to use your wooden coasters or other DIY projects, check out our blog for more great ideas.

Photo of author

Martin Flood

Martin Flood has been working in the construction industry for over 20 years as a general contractor with expertise in remodeling projects that are large or small. He has furthered his career by specializing in epoxy resin flooring, providing excellent service to both commercial and residential clients. Martin’s experience enables him to offer professional advice on how to choose the right type of project based on your needs and budget.

Leave a Comment