will epoxy freeze?

Epoxy resin can be affected by cold temperatures in several ways. In this article, we’ll take a look at some of the most common questions about how cold weather affects epoxy and what you need to know about your project if it’s going to be exposed to freezing temperatures.

Does freezing ruin epoxy?

Epoxy is a thermoset polymer. Thermoset polymers are cross-linked and hardened with heat, but epoxy does not tolerate freezing temperatures and should never be used in severely cold weather.

Why? Because epoxy will not withstand freezing temperatures or cold weather, using it on your home’s exterior would be a bad idea.

At what temperature does epoxy freeze?

Epoxy resin freezes at -20 degrees Celsius, and the curing agent freezes at -30 degrees Celsius. So even if it’s -30 outside, your epoxy will not freeze.

However, if you cure your epoxy when it’s cold outside (say, if you forget about your project in a snow bank) then the epoxy will be cured but still frozen solid when it thaws out in springtime.

In other words: don’t let this happen! It may seem like an easy mistake to make but it can result in serious frustration later on when you need access to whatever part of your project was covered in frozen epoxy when temperatures rise again.

Is epoxy cold resistant?

It’s important to note that epoxy resin is not cold resistant. As the temperature drops, it will eventually freeze, but there are a few things you should know about this process.

First of all, epoxy resin won’t freeze at 32 degrees F or lower; however, it can still take some time before this happens (some sources claim 8-12 hours).

At higher temperatures (above 80 degrees F), epoxy also doesn’t freeze immediately either: it takes several days for its properties to change when exposed to heat over 100 degrees F.

Unfortunately for us humans who live in more temperate regions of the world where winter brings only slightly colder temperatures than summer does (or at least that’s what we hope!), epoxy won’t be affected by either extreme cold or heat and will remain liquid throughout those temperatures.

Does cold weather affect epoxy resin?

Epoxy resin is not affected by cold weather. It is affected by cold temperatures, however, because it’s a liquid and will solidify at low temperatures.

You can expect epoxy resin to set even when the temperature hovers around freezing. In fact, the colder the temperature, the faster it will set up on you!

Can epoxy be left outside?

The answer is yes, epoxy can be left outside. I have even seen it used for walkways and patios at a high-end resort in the mountains.

If you need to know if your epoxy will freeze or not, there are some things you can do to find out:

  • Check the temperature where you live and make sure it doesn’t get too cold. If it does, look into using a different flooring material because this one won’t work well at those temperatures.
  • Make sure that your house is insulated so heat doesn’t escape out through walls and floors (or windows). This will help prevent freezing as well as give you more control over how warm or cool inside air stays throughout different seasons of the year

Can cured epoxy be frozen?

Epoxy resins are a thermoset polymer. This means that they’re basically like their name suggests: they’re resins that are “cured” using heat and can’t be melted back down again once they’ve hardened.

Since epoxy resin is a thermoset polymer, it’s not affected by freezing temperatures at all. The other thing about cured epoxy is that it’s insoluble in water and won’t freeze or change shape when exposed to cold weather conditions—so you’re good to go!

What happens if resin gets cold?

The answer is that resin will not freeze. Epoxy has a freezing point of about 38°F (a freezing point is different from the glass transition temperature, which is what we’re talking about here). If it gets cold enough to go below that temperature, it’ll remain liquid.

If you set up your project in a cold location and it gets below 38°F overnight, be careful when moving your project in the morning because any ice on top of the epoxy may crack or break off and damage your work.

What happens if you put resin in the freezer?

In short, absolutely nothing will happen. Epoxy resin is made up of two parts: a resin and a hardener. The resin is the half that gets hard when it dries, and the hardener is the half that makes it dry faster.

If you put your resin in the freezer for any reason, you’re essentially just slowing down this drying process.

For example: if you add water to epoxy resin and then stick it in the fridge, it won’t freeze—it’ll just take longer for them to mix together (and then dry).

The good news is that epoxy resins are almost impossible to damage by extreme heat or cold temperatures because they’re designed to withstand those changes!

So if your garage burns down while you’ve got some project materials inside your workshop? No big deal! They’ll still be fine when they come out again after firefighters have cleared away all those charred walls.


Epoxy is a great material for all sorts of projects, but it does have its limitations. If you’re thinking about using it in cold weather, then it’s important to understand how the temperature affects epoxy resin so that you can make an informed decision about whether or not this is a problem for your project.

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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.

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