My garage averages around 55 degrees most of the time. I have a small electric heater that kicks in if it goes below 50.
The strange thing is that at this temperature the epoxy still hardens up nicely in less than 24 hours. I epoxied Skerry stem joints yesterday at around noon, went in to check this morning at 8:30 and the epoxy was quite hard--passed the "thumbnail" test. I pressed pretty hard with my thumbnail and did dot get a discernable dent. The temperature was about 58 degrees.
In a way this has me worried that I am not doing things properly. I am using MAS epoxy with the slow catalyst. Using the attached pumps to mix it--one pump epoxy to one pump catalyst. And yes, I have the correct pumps on each container--I get twice as much epoxy as hardener per pump. (MAS's literature states that adding extra catalyst will not shorten the cure time anyway.)
As I said the epoxy is hardened, but I suppose it is not actually cured. The reason I say this is that because according to MAS's literature a full cure at 59 degrees would take 10 days. This is also confusing because their lit states that a cure at 77 degrees would take 5 days, whereas CLC states that it takes 24 hours at 75 degrees! What is going on here?