ya dude, i raked a part of roof today so it doesnt ice dam. we going thru a mini thaw right now.... it hits 32+ then freezes damn i need check the back end of the roof but yeah i had my garage door freeze shut it sucks, you have to set the ... (i guess) limits on your openers so it doesnt break shit, i dont what its called.... its like the saftey thing. so if you hit it it knows and shuts down