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  1. #1
    Join Date
    Mar 2007
    Location
    Cape Cod, Massachusetts
    Posts
    574

    Default Is insulation required for PEX type piping?

    I almost never see hot water distribution pipe (PEX type) insulated. The energy code requires R3?
    Is PEX rated R3?

    Do you call this out on your reports??

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    Ken Amelin
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  2. #2
    Join Date
    Aug 2007
    Location
    Memphis TN.
    Posts
    4,311

    Default Re: Is insulation required for PEX type piping?

    R Value of Pex is very similar to cooper.
    If you AHJ requires R3 then Pex needs to be insulated as cooper supply would be to meet this requirement.

    It Might have Choked Artie But it ain't gone'a choke Stymie! Our Gang " The Pooch " (1932)
    Billy J. Stephens HI Service Memphis TN.

  3. #3
    Join Date
    May 2007
    Location
    Tyler, TX
    Posts
    719

    Default Re: Is insulation required for PEX type piping?

    Old post resurrection.

    Yes. I call it out. Pex manufacturers recommend it. From a Viega manual....

    15.6
    Freezing
    The flexibility of ViegaPEX Ultra tubing makes it
    resistant to damage from freezing, but precautions
    to prevent freezing should be taken when low
    temperatures might be encountered.
    Insulating each PEX tube individually or as a group is
    not generally necessary if the PEX tubing is installed
    within the insulation envelope of the structure, i.e. the
    heated area. For example, the tubing may be installed
    under the insulation in the attic or within an interior wall
    of a heated space.


    Bruce Thompson, Lic. #9199
    www.TylerHomeInspector.com
    Home Inspections in the Tyler and East Texas area

  4. #4
    Join Date
    Mar 2007
    Location
    Cape Cod, Massachusetts
    Posts
    574

    Default Re: Is insulation required for PEX type piping?

    Quote Originally Posted by JB Thompson View Post
    Old post resurrection.

    Yes. I call it out. Pex manufacturers recommend it. From a Viega manual....

    15.6
    Freezing
    The flexibility of ViegaPEX Ultra tubing makes it
    resistant to damage from freezing, but precautions
    to prevent freezing should be taken when low
    temperatures might be encountered.
    Insulating each PEX tube individually or as a group is
    not generally necessary if the PEX tubing is installed
    within the insulation envelope of the structure, i.e. the
    heated area. For example, the tubing may be installed
    under the insulation in the attic or within an interior wall
    of a heated space.
    Hi Bruce,
    The original discussion was not about insulation for freezing but about insulating to energy code. ViegaPEX bulletin is not addressing this. Very curious that it says it is not needed if within heated space?? MMM?

    Ken Amelin
    Cape Cod's Best Inspection Services
    www.midcapehomeinspection.com

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