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Thread: PEX and UV exposure

  1. #1
    DIY Junior Member JGLA's Avatar
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    Default PEX and UV exposure

    Can anyone direct me to some concrete guidelines regarding PEX and UV exposure? Specifically, I want to know whether PEX tubing being run under a house that may be exposed to some indirect light from crawlspace access grates or small ventilation screens at least a couple of feet away needs to be sleeved.

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    DIY Member wallskev's Avatar
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    Exclamation PEX Manual and Reference

    Take a look in :

    See Reference Manual:

    http://www.h-a-s.com/literature/Hydr...k%20020708.pdf

    File was too large to uplaod

    Pg 9 "A sunlight exposure time not to exceed a total of 60 days cumulative is permissible."

    Cheers
    Last edited by wallskev; 06-26-2010 at 04:30 AM. Reason: Attachemnt Missing
    Kevin

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    Moderator & Master Plumber hj's Avatar
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    Default

    Usually the restriction applies to the UV rays in direct sunlight. There are none in indirect sunlight.

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    DIY Junior Member JGLA's Avatar
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    Thanks for the file, Kevin. That's what I wanted to see.

    Quote Originally Posted by hj View Post
    Usually the restriction applies to the UV rays in direct sunlight. There are none in indirect sunlight.
    Thanks, HJ. That's what I thought. But when I spoke to the city inspector on duty, he indicated that I would want to sleeve any PEX that passed near any ambient light under the house. Just goes to show how much they still have to learn about PEX here in California.

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