[Dependable Dave]

If it's anything like where I spent the last 28 years, the high desert of Oregon, where it could get below zero in the winter, I don't envy you. The business is still there but people are less likely to be out and about and seem to put off repairs. The resin runs more slowly, so use a thinner one. Don't waste your time trying to heat the windshield. Just have more patience. There's a greater chance of finding moisture in the break. That's about it, unless somebody else can add something. By the way, the coldest day I did repairs was 2 degrees above zero, for my barber. I had my snowmobile suit on and it was still cold!