I have a very small workshop 12x16 and I heat it until it's a nice 70 degrees inside. I do my nitro rattle spray and let it sit in there to dry for about 4-5 hrs, till it's "dry enough". Then, I move it into the garage which stays relatively warm via the house. The next morning I move it from the garage to the utility room, where the furnace also is, and let it hang in there for the next several days. So far, this technique has worked well for me, even in near 0 temps.