Insulate Pex In Attic

I find no problem with it being in the attic as long as it is properly insulated.

Insulate pex in attic.

It is usually colder than the rest of the house mostly due to the cat door and slider the dogs go in and out of. It s smart to insulate water supply piping exposed to. Also according to ashrae research 2015 hvac applications page 50 4. You are referring to possibilities.

Once my attic warms up after a few hours the next day the pipe thaw. Should pex water supply lines in attic be insulated through its entire length in the attic. Keep the tubing shielded from both hazards to increase its life. 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.

The builder insulated about 6 feet of the lines from the water heaters located in the attic but did not insulated the entire lengths. While pex does not ordinarily burst in the cold the water in the pipes can still freeze. Foam is used most commonly and generally works well. So far no leaks.

Because the advantage of pex is that the pipes are easily curved around obstacles etc i bet insulation coverage wouldn t be more than 90 in even careful installations. The foyer is 16 long and is off the kitchen it isn t heated directly but is part of the house. Table 1 also shows that all of the plastic pipes tested to date exhibit moderately to significantly higher heat loss rates than comparably sized copper pipes when tested uninsulated in air. It is important to insulate pex pipe in an attic particularly in cold weather areas.

I plan on running pex pipes both hot and cold across 16 feet of unheated attic space above a foyer. If all plumbing lines are within the envelope and a recirculating pump is installed what might the payback period be for insulating pex hot water lines. Insulating the pex helps prevent conduction sweating. Pex tubing is susceptible to cracking when it s exposed to freezing temperatures or ultraviolet light.

Ideally in the attic you would want to run the pipe as close to the ceiling as possible below the insulation. I would rather have a line break in the attic than under a concrete slab. Basically the r value of pex insulation does not meet energy code requirements for piping insulation. How to insulate pex.

Pex pipe bottom line. In a world of infinite possibilities anything is possible. In any case insulation would serve no purpose whenever the wait. I have a run of pex in my attic that freezes when the outdoor temps falls to about 15 degrees.

There are no manufacturer guarantees it won t fail. Tips for insulating pex pipes.