Hello, I run the sign shop for a major ski area in Colorado, and for a variety of reasons, we have to do this all the time. I don't like to, but it is very doable. You just have to be careful. I recently installed a 1 ft by 10 ft cut vinyl graphic (Gerber/3M 220 cast) across 3 windows at one of our retail outlets. I had been putting it off because we had been having a long run of days where the temps barely got above zero (that's F, not C). And these windows never see sun. The day I finally did it, the temp couldn't have been 15 in the shade. Just make sure you use very good tape for your anchor position. Cheap masking tape doesn't like to adhere in the cold (learned the hard way).We use the Scotch 3M 'green tape' (Masking tape for hard to stick surfaces #2060) available at all hardware stores. The windows were fairly dirty from an adjacent construction project, but I gave them a quick wash w windex, making sure I didn't let it freeze on, and did a standard dry application. After squeegeeing, rub the vinyl and app tape firmly w a rivet brush, then peel the app tape back SLOWLY at a steep angle. I push the tape slowly back across the surface that I am applying to, revealing the vinyl a little at a time. If you pull up at a 90 degree angle, you will definitely rip the vinyl off the application surface. Sorry this is so long-winded, but it has always worked for me. This is just one example. I have several hundred square feet of cut vinyl graphics that were applied to repainted corrugated aluminum paneling on the terminals of several ski lifts that were applied in the driving snow. All still in service, and not peeling after 3+ years. Good luck, and sorry you got flamed for having to work outside in the cold. We do it all the time. Fact of life.
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