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2400mm floor to ceiling height

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  • 02-08-2016 12:50pm
    #1
    bobbygoldstar
    Registered Users Posts: 18 ✭


    There are a few old threads in relation to this query.

    I would always design a habitable room with an absolute
    min. of 2400mm as set out in the regs..
    I don't think you should ever intentionally design a
    room with a lower floor to ceiling.
    However what happens if you change floor finish
    from carpet to 20mm engineered timber floor and the
    floor to ceiling is 2380mm am I still compliant re
    the regs


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    #2
    Gumbo
    Moderators, Society & Culture Moderators Posts: 38,614 Mod ✭✭✭✭Gumbo


    The 2.4m height is a ventilation suggestion from TGD Part F.
    Its a suggested height.

    Can you demonstrate that the room will be ventilated accordinally with the lower height?


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    #3
    Metric Tensor
    Registered Users Posts: 3,724 ✭✭✭Metric Tensor


    This is an interesting one:

    kceire - if you were to be shown a MHRV design with input/extract calculations for a room with a ceiling height lower than 2.4m would you consider that acceptable?

    I realise opinions may vary .... but yours has a bit if weight! ;-)


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    #4
    Gumbo
    Moderators, Society & Culture Moderators Posts: 38,614 Mod ✭✭✭✭Gumbo


    Metric Tensor wrote: »
    This is an interesting one:

    kceire - if you were to be shown a MHRV design with input/extract calculations for a room with a ceiling height lower than 2.4m would you consider that acceptable?

    I realise opinions may vary .... but yours has a bit if weight! ;-)

    Within reason.
    2.0m = no
    2.3m = probably

    I'm sitting here in my house, built in 2006 and the FFL to ceiling is 2380.
    Context too plays a part, a brand new house, it should be designed out, loft conversion, I can work with existing heights as long as other parameters are met.


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    #5
    Poor Uncle Tom
    Registered Users Posts: 14,546 ✭✭✭✭Poor Uncle Tom


    Also, the 2400mm is a 'suggested' minimum, so definitely not absolute.....


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    #6
    Metric Tensor
    Registered Users Posts: 3,724 ✭✭✭Metric Tensor


    I have always found that strange PUT.

    The TGD's themselves are, in theory, only "suggestions" of one way, albeit the only prima facie way, of complying with the regulations:

    So with that in mind - can you be said to be complying with the TGD and hence complying with the regulations if you don't have a 2400mm ceiling. If the answer is yes then why does the TGD even bother giving a height and if the answer is no then why does it say "recommendations" when it holds the same strength as all the other items in the TGD.


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    #7
    Poor Uncle Tom
    Registered Users Posts: 14,546 ✭✭✭✭Poor Uncle Tom


    Metric Tensor wrote: »
    I have always found that strange PUT.

    The TGD's themselves are, in theory, only "suggestions" of one way, albeit the only prima facie way, of complying with the regulations:

    So with that in mind - can you be said to be complying with the TGD and hence complying with the regulations if you don't have a 2400mm ceiling. If the answer is yes then why does the TGD even bother giving a height and if the answer is no then why does it say "recommendations" when it holds the same strength as all the other items in the TGD.

    The answer I always get when I ask that question is that I should always treat the words 'recommend' or 'suggest' as 'will be' or 'shall be' or 'as a minimum should be' and all is sorted. But I always found the dillema with certification rather than with design or specification, the TGD's seem to give an easy opt out for the certifier, especially a developers 'in house' certifier.

    I treat the 2400 as a minimum and would always call it, even for 20mm.


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