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    • gary83
    • By gary83 30th Sep 17, 9:15 PM
    • 11Posts
    • 15Thanks
    gary83
    Bathroom extractor fan smell issues
    • #1
    • 30th Sep 17, 9:15 PM
    Bathroom extractor fan smell issues 30th Sep 17 at 9:15 PM
    Hi,

    We've been having a problem with a bathroom extractor fan for a while, to explain the layout of the house it's a ten year old three story townhouse with a downstairs toilet, middle floor main bathroom and a top floor ensuite all of which have extractor fans to get rid of humidity & smells.

    The bottom and top floor works fine with no issues however when the middle floor main bathroom fan is turned on a sewer smell permeates the whole second floor, seeping into the bedrooms either side - we have no problems when the fans not turned on.

    Any suggestions on how to get rid of the smell?
Page 1
    • Crinkmeister
    • By Crinkmeister 30th Sep 17, 9:52 PM
    • 468 Posts
    • 206 Thanks
    Crinkmeister
    • #2
    • 30th Sep 17, 9:52 PM
    • #2
    • 30th Sep 17, 9:52 PM
    Do you know where all the vents are? Are they all clear? Is all the ducting free and clear?
    • gary83
    • By gary83 1st Oct 17, 10:58 AM
    • 11 Posts
    • 15 Thanks
    gary83
    • #3
    • 1st Oct 17, 10:58 AM
    • #3
    • 1st Oct 17, 10:58 AM
    The fans located on an external wall the vent leads directly through that outside, before posting on here I removed the fan, disassembled it cleaned the housing, blades and the ducting which looked like it hadn't been done for a long time, if at all (it's a relatively new house to us) this notably improved the suction from the fan however the smell in the next room remains if the fan turned on
    • Ectophile
    • By Ectophile 1st Oct 17, 9:16 PM
    • 2,738 Posts
    • 1,676 Thanks
    Ectophile
    • #4
    • 1st Oct 17, 9:16 PM
    • #4
    • 1st Oct 17, 9:16 PM
    As the fan is sucking air out from the bathroom, new air must be being sucked in from somewhere. That could be the waste down pipe.

    You may need to check that the pipe is intact. Sometimes, rather than running the pipe out through the roof to vent it, they cap it with a valve at top floor level. That valve may be leaking.
    If it sticks, force it.
    If it breaks, well it wasn't working right anyway.
    • gary83
    • By gary83 4th Oct 17, 11:42 AM
    • 11 Posts
    • 15 Thanks
    gary83
    • #5
    • 4th Oct 17, 11:42 AM
    • #5
    • 4th Oct 17, 11:42 AM
    Thanks I thought it must be something like that
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