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Burying hot water heating pipe

Timmmy Member Posts: 14
I have about 12 feet total of copper pipe buried to supply hot water to some fin tube. I'm quite sure some of it has deteriorated as my my wet return did.... would you wrap some copper with insulation? If so, which would you recommend? 
Or should I use pex with insualted. It looks like they only sell the insualted pex in 100 foot rolls


  • Big Ed_4
    Big Ed_4 Member Posts: 2,785
    Yes you need to use armorflex to cover the pipe .Not as much of a insulation but to protect the pipe from wear of expansion against the cement ....
    I have enough experience to know , that I dont know it all
  • Larry Weingarten
    Larry Weingarten Member Posts: 3,296
    Hi @Timmmy , Earth can be a tremendous heat sink, and it will probably never be completely dry, so it will steal heat and corrode metal pipe. I'd be tempted to put in a large grey PVC conduit with long sweeps and pull insulated PEX through it to supply your fin tube. That would give you a dry and repairable piping run. Also PEX does come in shorter rolls, or sticks.

    Yours, Larry