Good video Gary. This explains why I didn?t have cracked pipes in my house when I had a corner freeze at 4 degrees, and why we didn?t have issues with our TT with one frozen line at 7 degrees. I was amazed I didn?t have leaks with either one.
(The temp at the house was the lowest since it had been built 7 years before. Idiot building crew had put the insulation between the pipe and the interior, leaving the pipe insulated only by the vinyl siding! Brought a guy in with an infrared camera to find the leak, and a plumbing crew to fix it. The trailer is 4 season, but has a design flaw where one pipe routes temporarily outside the heated space. Fairly stupid, and they fixed it the next year. We still do ok to 20 or a bit lower, but single digit lows and below freezing highs just suck.)
