I was all psyched that by basement was still in the upper sixties and I could do some finish work without worrying about the temperature. Well, that was until this past weekend when the power was out for 48 hours and furnace didn't run a lick for two days. Now the basement is just over 55 degrees darn it. I know that I'll have problems with the varnish later on, but for now I still have to apply the shellac. How cold is too cold to apply shellac and have it work correctly? I'd like to be especially cautious as it is being applied to red oak.