When I work in my basement in the winter, It cures to the touch over night and it's about 60 or a little less. Epoxy takes many weeks to fully cure. It's in the curing process for a long time and has the tendency to out-gas and produce blush if the conditions are right. As far as how long specifically, who knows? RAKA would probably have to call the manufacturing plant to get that info.

For anyone reading this ... you should always plan your fill coats a day apart and try to get to work where you can produce heat if needed. The problem with filling glass weave is that once it's fully hard, how do you sand it without cutting into the glass. If you have no chemical bond going, you should sand it. I once worked with someone who had this happen and we scrubbed it with wire brushes and soap and water.
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