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Thread: max height for ceiling rain shower head?

  1. #1
    DIY Junior Member naadimre's Avatar
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    Default max height for ceiling rain shower head?

    hi all,

    this is my first time posting. we are renovating our master bathroom and we want to vault the ceiling. the highest height will be over the shower. we are doing the Hansgrohe PuraVida 400 Air (15 inch) rectangular ceiling mount. i was thinking that we should level out the vault at around 10 ft so we don't have an incredibly long pipe for the shower head. my husband would like the ceiling to go higher (the max height we could go is 14ft).

    my questions are:
    -for a rain head shower of this size, what is a good height? i've heard 10-12 in above the tallest person (hubby is 6ft). But is 8 ft OK?

    -if we decide to use a long pipe to make the shower head at ~8ft, will there be any issue with water hammer (something my contractor brought up), or other issues i'm not aware of?

    -is this something routinely done (having a very long pipe)?

    -what do plumbers normally do with a higher than normal ceiling height and a ceiling mount rain head? what is the longest pipe length you would recommend?

    thanks!
    reva

  2. #2
    DIY Senior Member Reach4's Avatar
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    Adding height to a shower head will not contribute to water hammer. A shower head does not normally have a quick-acting valve, and yours will not have one at all. Any water hammer would be due to water flowing in the pipe before the shutoff valve, and then only if the valve was somehow fast-acting.

    I am sure there are other reasons to prefer a particular height.

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
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    Regardless of what you do, the water will cool off as it falls, the further it falls, the colder it will be AND, if you were to then switch to the 'conventional' showerhead, assuming it was the right temp coming out of the rain head when it got to you, it would likely be WAY too hot coming out of the one closer to you without changing things. So, from a functional viewpoint, you could probably put it anywhere, but from a user standpoint, closer is probably better.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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    ACO Shower Drain Sales johnfrwhipple's Avatar
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    I love rain heads up high. We have never had a problem with water hammer - not once.

    Typically we installed them as high as possible and have done at least 4-6 at 8' heights. Again never once an issue.


    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  5. #5
    DIY Junior Member naadimre's Avatar
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    Quote Originally Posted by johnfrwhipple View Post
    I love rain heads up high. We have never had a problem with water hammer - not once.

    Typically we installed them as high as possible and have done at least 4-6 at 8' heights. Again never once an issue.
    thanks for the replies.

    @johnfrwhipple...with high ceilings, do you typically have a very long extension pipe? how are the aesthetics of that? what is the longest pipe you've had to install?

  6. #6
    ACO Shower Drain Sales johnfrwhipple's Avatar
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    Quote Originally Posted by naadimre View Post
    thanks for the replies.

    @johnfrwhipple...with high ceilings, do you typically have a very long extension pipe? how are the aesthetics of that? what is the longest pipe you've had to install?
    My lasty client agonized over this back and forth for a while.

    We tried a 2" nipple and the rain head looked glued to the ceiling. Not good.

    We tried a 12" nipple but then it was to close the his head (he is 5'11" 8' ceilings)

    Then he custom ordered a 6" nipple and this looks fantastic.

    Not the best shot but this is our last project.

    Not to close to his head or ceiling.

    I'm building a new Steamer this weak and the rain head will be recessed into the basement ceiling - flush mount. The ceiling height in this shower only about 84".

    I always warn my clients to have flow control with these rain heads. If yours is full blast or nothing you might not like it so much.
    Last edited by johnfrwhipple; 03-15-2014 at 09:30 PM.


    jfrwhipple@gmail.com - www-no-curb.com - 604 506 6792

    Always get construction advice double checked by your local city hall. Flood Test Every Shower - Every Time.

  7. #7
    Retired Defense Industry Engineer jadnashua's Avatar
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    At the ceiling with 14', it will be much cooler by the time it hits you after falling through 8' of air or so to hit your head. With a typical ceiling height and an average person, as high as possible should be perfectly fine.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

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