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damp spots in spare room

  • 11-10-2011 3:50pm
    #1
    Ciarrai76
    Moderators, Recreation & Hobbies Moderators, Regional South Moderators Posts: 9,469 Mod ✭✭✭✭


    sorry in advance if this is the wrong forum for this, but as its connected to decorating I thought it might be ok!

    We are planning to re-paint our gable end spare room, but I've noticed damp spots around the room and on the ceiling. They are litterally little spots, not bit patches, scattered around. This room isn't used to sleep in, but I have some clothes & coats stored in there, and I do dry my hair in there etc. There is only a velux window in there, and I do keep the heater on in there during the winter. My parents have said I need to open the window more often, but what can be causing this dampness? Could a slightly broken drain pipe outside on that back wall be a factor? I am getting that fixed in the next week, but in the meantime, should I just try to keep the windo open when I'm at home & maybe put the heating on in there in the evening to help dry the walls out? I'll obviously have to wait till the dampness dries out before we go to paint, which is going to delay things, but better safe than sorry!

    thanks in advance for advice1


Comments

  • #2
    paddy147
    Banned (with Prison Access) Posts: 15,858 ✭✭✭✭paddy147


    lack of propper ventilation?


  • #3
    Ciarrai76
    Moderators, Recreation & Hobbies Moderators, Regional South Moderators Posts: 9,469 Mod ✭✭✭✭Ciarrai76


    I'm pretty sure that's the problem. There is no ventilation in that room apart from the velux window, which doesn't have any vents. I kept it open most of today, so I'm going to do that as often as I can from now on. Other rooms in the house all have little vents in the windows, so as its not in this room it must be a big factor in the damp spots.


  • #4
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    1. most probably ventilation. is this on the upper floor? have you considered that moisture from cooking, drying clothes, people etc might be naturally migrating upward into this space..

    2.or a lack of insulation resulting in a cold surface that causes any moisture to condense.

    3. if it was a leak there would more likely be a water mark or clear line of mould.

    4. thermal bridging for example where the wall plates causing a thermal bridge..

    3 & 4 sound unlikely in this instance..


  • #5
    Ciarrai76
    Moderators, Recreation & Hobbies Moderators, Regional South Moderators Posts: 9,469 Mod ✭✭✭✭Ciarrai76


    it has to be ventilation. I've noticed that on our Velux you can keep the bar slightly ajar, which I think is to leave in ventilation, without having it totally open, so I am going to leave it like that when I can't open the window. The room is upstairs and on the gable end of the house. There is a utility room below it, with a washer & dryer, so not sure if that might be one cause?

    I've noticed there is bad ventilation in parts of our house, e.g. none in our en-suite, apart from the window, which I try to keep open as much as I can, but our ceiling is ruined from all the condensation from shower. We are hoping to put in an extractor in near future.
    Thanks for the info and advice.


  • #6
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    Ciarrai76 wrote: »
    it has to be ventilation. I've noticed that on our Velux you can keep the bar slightly ajar, which I think is to leave in ventilation, without having it totally open, so I am going to leave it like that when I can't open the window. The room is upstairs and on the gable end of the house. There is a utility room below it, with a washer & dryer, so not sure if that might be one cause? yes

    I've noticed there is bad ventilation in parts of our house, e.g. none in our en-suite,

    apart from the window, which I try to keep open as much as I can, but our ceiling is ruined from all the condensation from shower. We are hoping to put in an extractor in near future.
    Thanks for the info and advice.
    :eek: how olds the house? your builder or arch should have picked that up:)

    if you want to be sure about your ventilation, there are extract fans on the market that are closable and only operate when the humidity is too high


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  • #7
    Ciarrai76
    Moderators, Recreation & Hobbies Moderators, Regional South Moderators Posts: 9,469 Mod ✭✭✭✭Ciarrai76


    we bought the house in 2005, I think it was built in 1999.
    Thanks for the info on the extractor fans.


  • #8
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    Ciarrai76 wrote: »
    we bought the house in 2005, I think it was built in 1999.
    Thanks for the info on the extractor fans.
    i only ask as in a new build the certifying arch/eng should have picked this up or in your case the persons carrying out the survey report for the mortgage :)


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