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Long ventilation ducting question

  • 12-07-2023 10:17am
    #1
    Margarita. Marika
    Registered Users, Registered Users 2 Posts: 2 ✭


    Hello. I have a question regarding long ducting. Problem started, when our old ducting was collecting condense inside, there was no flow out, and then discovered that ducting was not connected to outlet at all, and condense started to leak thru ceiling into apartment that I am renting. Anyway, I reported the issue to management company. They inspected and decided to put in place new ducting and insulate. So first contractors put in place uninsulated one and with lots of bends up and down. i reported that again to management company, that I read that bends must be minimalised and they promised insulate ducting. Then they put insulated ducting, minimised bends but again, outlet is up-way and condense can't flow out. Then I read again the regulations, it also states: Horizontal ducting including ducting in walls should be arranged to slope with a slight fall away from the fan to prevent backflow of moisture into the unit.

    can anyone tell in here for sure if i understand it correctly. I am so worried that at some point this ducting is again full of moisture and I will get again extreme humidity and mould problem in here. At the current it's summer, I keep windows open 24/7, but soon it's winter and cold season, I need fans in kitchen and bathroom working properly and that condense moisture could flow out not stay inside the ducting.

    ducting up-way.jpg
    insulated ducting outlet up-way.jpg
    uninsulated ducting bending.jpg




Comments

  • #2
    Alkers
    Registered Users, Registered Users 2 Posts: 6,908 ✭✭✭Alkers


    How did they access that space?


    It should just be a matter of making some wooden props up so that the fall is relatively constant from a high point after the ducting enters the space until it goes out through the wall.


    With insulated ducting you shouldn't experience much condensation.


    Are the fans working ok?



  • #3
    Margarita. Marika
    Registered Users, Registered Users 2 Posts: 2 ✭Margarita. Marika


    https://www.boards.ie/discussion/comment/120840885#Comment_120840885

    No, fans are not working okay. These are somesort of smart fans that suppose to respond humidity level in apartment, but seems that these respond to wind direction outside or definitely for something else. In bathroom now when was dry and no wind outside, I had shower and bath few times and fan didn't turn on at all. Then it turned on when was windier outside. Also fan's covers in apartment, these are sligthly wet inside



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