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Bathroom extraction fan

  • 04-10-2017 7:39pm
    #1
    spindex
    Registered Users, Registered Users 2 Posts: 324 ✭✭


    Im after retrofitting a toilet and sink into the space underneath the stairs, I am going to install an electric extraction fan to remove odours. My question is do I have to vent the fan outside or can I just run the vent pipe and leave it in the space between the upper and lower floor ?


Comments

  • #2
    Sleeper12
    Registered Users, Registered Users 2 Posts: 17,189 ✭✭✭✭Sleeper12


    Vent it outside. You need to create a flow of air. Entrance & exit. If you do not do this you will create a vacuum effect & dramatically reduced the effect of the fan


  • #3
    fred funk }{
    Registered Users, Registered Users 2 Posts: 6,827 ✭✭✭fred funk }{


    spindex wrote: »
    Im after retrofitting a toilet and sink into the space underneath the stairs, I am going to install an electric extraction fan to remove odours. My question is do I have to vent the fan outside or can I just run the vent pipe and leave it in the space between the upper and lower floor ?

    Are you kidding?

    Where do you think the foul air will go?


  • #4
    spindex
    Registered Users, Registered Users 2 Posts: 324 ✭✭spindex


    It's no joke, IV never came across a smell that travelled through a wall before


  • #5
    Gumbo
    Moderators, Society & Culture Moderators Posts: 40,339 Mod ✭✭✭✭Gumbo


    Extract to external air.
    You will be in breach of the building regulations if you don’t.

    And you risk creating a Damp environment in between the floors that can damage the structure of the timber joists over time. Not to mention the I’ll health effects that comes from the Damp and mound too.


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