On Sun, 21 Sep 2008 21:21:33 -0700 (PDT), Ron wrote:

I live in Fl. I had my home replumbed a few yrs ago and the pipes are
in the attic. They wrapped the "cold" water pipe with foam rubber in
case of condensation.

I have to wait FOREVER to get cold water to flow, because the water
sitting in that "cold" water plastic pipe (I assume it's PEX) even
with the foam wrapped around it heats up and gets VERY hot.

No matter how much insulation is wrapped around a pipe, if the water sits long
enough it will acquire the same temperature as the attic air around it.

The purpose of the insulation was not to keep the water cold so that it would be
cold when you use it. It was, as you said, to protect against condensation
dripping from the pipes and ruining your ceiling.


Robert Scott
Ypsilanti, Michigan