How will humidity and temperatures affect epoxy resin?

When working with epoxy, having the correct temperature is critical to a successful application. Failure to follow proper heating instructions for both the product and the environment has been known to create cloudiness in the finish, uncured resin (soft or wet spots), and excessive air bubbles.

Note: The instructions below are not recommendations or tips, they are requirements and the best way to prevent issues with the cure.


The product and the room must be kept at least 75° F before using the epoxy and during the entire curing process of 72 hours. If the epoxy arrives at your door and the weather outside is colder than 75°F, you must bring the epoxy inside and allow the product to acclimate to the correct temperature before mixing. If you want to heat your room quickly, we recommend small space heaters with thermostats. Some thermostats may not be 100% accurate so it is best to set the temperature to a few degrees warmer to ensure the correct temperature is met.

Maximum Temperature: It’s recommended that you keep the temperature as close to 75°F as possible but, if you are having issues maintaining a consent temperature, it is ok to go over 75°F (Up to 90°F). Never go under 75°F. If the temperature is warmer the epoxy will react quicker which results in shorter mixing times and faster cure times. The epoxy can also burn if the temperatures are too hot during the mixing process.


Make sure the epoxy and the environment are as dry as possible when using the epoxy. Humidity levels below 85% are recommended.  Storing the epoxy or working with the epoxy in a humid environment may cause inconsistent results due to moisture entering the mixture. Do not allow the epoxy to get wet while mixing, as this will ruin the finish.