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Thread: Insulation ok?

  1. #1
    DIY Senior Member Andrew21's Avatar
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    Jun 2006
    New York

    Default Insulation ok?

    Hey all,
    I have a question.

    Is the insulation here ok? ( I did fill in the little void on the left hand side by the window..made sure of it!) This wall is against the outside wall and I just wanted to make sure that the insulation is ok before I screw it in and seal it up with Redgard.

    I'm worried that if I have to replace the shower valve that the torch will make the insulation go up in flames. But then again, I'm afraid of the pipes bursting behind the walls.

    p.s. I asked this on another forum. Sorry, just want opinions =)

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  2. #2
    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    Aug 2009


    If your in a cold climate, I wouldn't have put the valve on the outside wall. You could have used a right hand tub. It is a nice looking installation though.


  3. #3


    It should be fine. Cutting down air flow is most important on an installation like this.

  4. #4
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Cave Creek, Arizona


    You did NOT have to insulate the shower and tub spout lines because they are not "full of water" once the faucet is turned off. If you ever have to change the valve the wall insulation will probably be the least of your problems. If the water lines NEEDED insulation, then the elbows would also need it.
    Licensed residential and commercial plumber

  5. #5
    DIY Senior Member TJanak's Avatar
    Join Date
    Sep 2009
    South TX


    If your fiberglass batt insulation is between the pipes and the outside wall (as it looks) I would not insulate the pipes. You want warm air from the interior to get to the pipes to keep them warm. As it is now you are blocking heat from the house from getting to the pipes.

    Kinda like when the say to open kitchen cabinets under the sink to keep the water lines from freezing.

    When I need a precise measurement of something I often use the highly technical method of eyeballing it.

  6. #6
    In the Trades Tom Sawyer's Avatar
    Join Date
    Nov 2010


    Never put pipes on an outside wall. Insulation does not create heat. Given time and cold enough temperatures the pipes and valves will freeze.
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

  7. #7
    DIY Senior Member Andrew21's Avatar
    Join Date
    Jun 2006
    New York


    Thanks for all the replies!

    Just to let you know the plumbing was there already. I was not going to move it because that would be too much work.

    Anyway, thanks again and tile on!

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