I'm building a completely composite kayak, and I layed the first couple layers of fiberglass on it on sunday. I'm working in my garage, the temperature was a little chilly, about 50 degrees. Sunday night it rained pretty hard, and got a bit colder. It's been between 30 and 45 degrees since then. I used about 1.5% catalyst in the (polyester) resin mix, an amount that should have caused the stuff to cure in about an hour, if the book I have is right. Now, 2 days later, the resin still isn't hard, but it's not very tacky either. Will it fully harden if I let it sit? Is there anything I can do to speed the process up? I was thinking of maybe spraying some extra hardener on the surface, but that seems pretty drastic. Since I dont have any way of controlling the humidity/temperature, what can I do for my future layers so that they'll harden faster? Do you have to use more catalyst in cold temperatures or when the air has high moisture content?

One other thing, A guy at a local fiberglass repair shop said to just put the layers on one right after the other, that it's not necessary to wait for them to cure. Could that be my problem?

Thanks for the help!
Jake