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Originally Posted by joe7670
Hold on given that bit of info, it's in the 70's here but at night 60's. Should I be waiting until later in the season?
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Depends on how thick you pour it. At about an inch thick it takes about 3 hours to harden but "overnight" to cure. I have worked on material after 4 hours before with no problems.
I'd be willing to bet if your surface was warm enough in the a.m. and you did your work then, you would be fine by 6pm. If you are worried about it just point a halogen at it. That will produce enough heat to keep it stable and keep it from cracking, clouding or becoming brittle. I use an infrared laser temp. gun to check mine periodically through the curing process.
BUT, doing this in the high 70's to mid-80's produces a much stronger pour, mold, etc.........I always use a lamp when temps are lower than what I want.