Up here in the colder months, no matter how careful ya are, there's bound to be areas that don't adhere 100%. Wrap and die-cut alike. If we had more warm sun, I'd say less time might be alright, but only the sun will keep those areas down. If you a wrap shop, doing a dozen vehicles a week or more, than you might have adequate tools..... heaters and whatnot to be a little more sure of yourself, but we don't have all the neat toys, so for over 36 years, we've been telling people at least a month or two.