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pex and rodents

hr Member Posts: 6,106
have I seen this happen.

In my case the mouse went down a 4" PVC sleeve I had installed in a slab radiant job.

It looked like the mouse went in head first, got stuck and could not back out. So he, or she, started trying to chew it's way free.

I imagine it had quite a surprise when he broke through to that 12PSI water inside the tube.

hot rod

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  • ed wallace
    ed wallace Member Posts: 1,613
    pex and rodents

    Anyone have any problems with rodents chewing on pex tubing had a customer ask about this today

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  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,489
    Hot Rod

    had something on that a while back I think.
    Retired and loving it.
  • Kevin O. Pulver
    Kevin O. Pulver Member Posts: 380
    Ed I asked the same thing

    when I first started using it. So far, I've had no problems nor heard of any. I don't know why rodents wouldn't like it. They like everything else. In the same way, do they chew Romex wire? If not, why? Kevin
  • Tony_23
    Tony_23 Member Posts: 1,033
  • Robert O'Brien
    Robert O'Brien Member Posts: 3,537

    Went to a Wirsbo class at Wales-Darby last night and according to them. No, it is completely inert and contains nothing that would entice vermin to snack

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  • Cosmo_3
    Cosmo_3 Member Posts: 845
    I remeber a post

    from hot rod, something to the effect that there may be microbic bacteria that feed on it. I have to look for it

    Cosmo Valavanis
  • Cosmo_3
    Cosmo_3 Member Posts: 845
    I remember a post

    from hot rod, something to the effect that there may be microbial bacteria that feed on it. I have to look for it

    This is from that thread;

    " Date: June 14, 2005 11:08 PM
    Author: hot rod
    Subject: I have seen insect

    bore holes in some EPDM tube in my area, on a few occasions!

    Maybe it's time for a PAPA pex/aluminum/pex/aluminum tube :) Seems like an outer metal layer would be the only surefire way to stop this. Or a borate treatment before covering :)

    Although I have heard rumors that some aggressive termite species will bore through aluminum siding to get to a food source. I saw an article about that in JLC once, years ago.

    hot rod "

    Cosmo Valavanis
  • Nothing except water...

    and during a drought, they can SMELL the water, right through the wall. They look at that long tubing as a straw...Gnaw, gnaw, gnaw SSSSSIIIIIIiiiippp GULP GULP, OK, THATS ENOUGH, YOU CAN SHUT IT OFF NOW... RUN FOR YOUR LIFE, THERES A FLOOD DOWN HERE!!! (Mice scurying everywhere putting on their little yellow life jackets...)

    Yeah, I've seen holes in PEX put there by rodi .

    The one about the organism eating PEX was probably promulgated by the copper pipe mentality. THey do that to each other, all the time.


  • Rodents

    We had a job, probably been 20 years ago where some polybutylene was installed in the attic for a future radiant zone. We call them roof rats here and they ate right through it; looked like swiss cheese.

    The tubing wasn't charged with water, so they kept right on eating the stuff.
  • Craig_8
    Craig_8 Member Posts: 33

    rodents have a strange dental problem that is not found in other mammals. Their teeth grow continously. eventually they would grow right through their head. to prevent this, they have to chew on things to wear their teeth away. They will chew on anything thats convenient, whether or not it has nutritional value.
  • Ron Schroeder
    Ron Schroeder Member Posts: 998

    Rodents are attracted to the salt and oils deposited on the PEX (and wires) from our skin. I have seen it many times. I now always weare gloves when I handle PEX, plastic tubing or wire installed anywhere that rodents might get to it.
  • Aidan (UK)
    Aidan (UK) Member Posts: 290
    PEX and rodents

    Craig's right, they will gnaw it, not to get any nutrition or water.

    It is mentioned in all the UK PEX & PB manufacturers' literature. They will also gnaw on electrical PVC insulation, which would cause me more concern.
  • Paul Cooke
    Paul Cooke Member Posts: 181
    Fat Mice

    Here's what I have found: Mice get into a crawl space and nest in the fiberglas insulation. They use romex and PEX as runways to get around. Sometimes they get to a hole in a joist that is not big enough for them to fit through. They chew on the wood at first. At some point they decide that the romex or the PEX is softer than the wood. I have seen all the insulation chewed off of romex until the bare copper wire is exposed. Occasionally you find the electrically fried rodent nearby.

    On one job we got a call because of a leak in the joist bay where half inch PEX was run through an inch and three eighths hole. The fat mouse chewed through the PEX until he made the opening big enough to squeeze through. It was a small opening in the pipe....just a fine spray.

    I still haven't seen a mouse chew through a copper line.
This discussion has been closed.