Pipe in a Cottage
I recently purchased a cottage along the Susquehanna River in northern PA. It is a one story concrete block structure, approximately 1000 square feet, on a slab.
The original construction had supply line copper pipes running from the bathroom, up into the attic, and down an exterior wall right against the concrete block. They placed a one inch thick insulation board on the firring strips, with a heavy plasterboard over that, so the pipes were trapped against the concrete block and the insulation. I don't heat the interior, but in mid December during a cold snap the two pipes along that wall froze.
I'm currently replacing the copper by running Pex low along the interior of the cottage walls, which I'll box in later (at least the top and exposed side portion).
I don't heat it (propane space heater) when i'm not there, but the coldest it has been in there is 32 degrees. I'd like to keep it open during the winter, but I don't know if the pipes will freeze or burst. Does anybody think that the pipes will freeze or burst? I was thinking that even if I knew it was going to be bitter, I might leave the heat on for a few days just to keep it safe.
Any thoughts would be greatly appreciated.