Unbelievable...but true.
We purchased our 2017 Rockwood TT last June. After our last trip of the year (Nov} I parked it with plans to winterize at a later date. Due to health issues and two operations. it was never winterized...
Forum Discussion
pianotuna wrote:
Copper can be frozen approximately 7 times. Each time the walls get thinner. Finally they burst.77rollalong wrote:
i would not have gotten away with that, our motorhome is copper lines, and it got to 20 below for a few days.....should by a lottery ticket too
Don, I think that rule of 7 can be subverted. I've seen brand new copper pipe burst in the first night of a really cold snap. The cases I've seen of burst lines typically occurs at fittings, adjacent to them, and at bends that hold water.
FWIW, I often see anecdotal blow out procedures on this Forum where owners limit air pressure to 30-40 PSI. IMO, that's way to low to remove all the water in even a small system. One has to be cognisant about the transfer of energy of compressed gas moving that slug of water through a pipe and fixture, though. It is possible that a slug of pressurized air and water breaks a fitting or breaks a valve.
