While pex does not ordinarily burst in the cold the water in the pipes can still freeze.
Best way to insulate pex in attic.
For corner joints that need to be insulated cut a simulated miter joint by cutting the insulation at a 45 degree angle.
Insulate pipes run through an attic to reduce the risk of freezing.
There are no manufacturer guarantees it won t fail.
Pex pipe is resistant to bursting but the fittings are not.
Pex won t ruin if frozen.
Water inside the pipes can still freeze.
Jastori oct 7 2009 3.
It is important to insulate pex pipe in an attic particularly in cold weather areas.
Open the insulation piece at the slit and slide it over the pipe.
The best way to ensure a long lifespan for your piping is to insulate properly which in some cases means insulating with the professionals.
2 align the slit side of a length of flexible closed cell pipe insulation with the tubing.
Insulating your pipes is never a bad move to make and with piping that s as versatile as pex piping you ll want to do everything you can to protect it.
I have a run of pex in my attic that freezes when the outdoor temps falls to about 15 degrees.
Continue this process over the entire length of piping in your attic.
Ideally in the attic you would want to run the pipe as close to the ceiling as possible below the insulation.
Insulation from the experts.
It s smart to insulate water supply piping exposed to freezing temp.
I suppose you don t have freezing issues in fl but if you run it above the insulation the water in the pex will heat up more than if it is run close to the ceiling.
This will allow you to slip the insulation over the pipe corner easily.