We spent last night in southern Alabama. As in most of the southeast it got down into the 20s. So we were prepared.used the gas fur acne for heat so the tanks and water lines below would be warm and not freeze. There is a vent specific for that reason. Left all the cabinet doors open to keep those pipes room temp. Got up this AM and got ready to hit the road. Closing the slides OK. Last to be Closed is the biggest slide on the passenger side and heard this big "crunch" sound. Stepped outside and looked up and saw this:
Then opened the slide and this happened:
My best guess is the heat from the coach kept the moisture on the roof from forming ice. The wet accumulated in the slide awning. The coldest time was just before dawn. The slide was in the shady side and there was a sheet of 1" thick ice. I guess next time there is a freeze I will try to figure out the shady side and keep that slide in for the night or maybe all the slides in.