Is there any difference in epoxies for indoor and outdoor application?
The same epoxy may or may not be used for both, depending on the application. In general, epoxies that will be subjected to sizable fluctuations of temperature, whether outdoors or in freezer rooms, are formulated to produce a cured material that has a small amount of flexibility. These usually contain polysulfide or polyamide. The supplier should be able to make recommendations. There are many other factors that may have to be taken into account as well, depending on the specific use.