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Thread: PEX or PVC - which is more sensitive to caulks, flashings and sealants

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    DIY Junior Member oak orchard's Avatar
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    Default PEX or PVC - which is more sensitive to caulks, flashings and sealants

    I presumed that O2 barrier PEX and PEX in general is more likely to be compromised by various VOC's and solvents in poly urethane, butyl, asphalt flashings, and and spray foams than PVC. But I am told by a plumber that PEX is much heartier than PVC.

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
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    PEX can be used for water inside a home, and also CPVC

    PVC can only be used for underwater supply of cold water.

    Waste and vents can be ABS or PVC, depending on local code.

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