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Black mould problem

  • 14-03-2015 10:17am
    #1
    Registered Users, Registered Users 2 Posts: 4,539 ✭✭✭


    Hi all,

    I'm not much of a DIY'er I'm afraid but I do have a problem developing which I'd like to address myself if possible.

    I have a roof window and under both bottom corners some black mould is developing. Can someone tell me what the best course of action is to stop/kill/treat this?

    30hstc8.jpg

    and

    28qz2w1.jpg


Comments

  • Registered Users, Registered Users 2 Posts: 5,820 ✭✭✭greasepalm




  • Registered Users, Registered Users 2 Posts: 28 oxomoxo


    I have the same issue myself, What did you end up doing with the black mould. How did you remove it?


  • Registered Users, Registered Users 2 Posts: 4,539 ✭✭✭BenEadir


    oxomoxo wrote: »
    I have the same issue myself, What did you end up doing with the black mould. How did you remove it?

    Only a few days in but I've implemented a rule that the window must be left slightly unlocked so there is a bit of a vent going on. The window is in an upstairs bathroom which has a shower but doesn't have an extractor fan which is now getting increased usage thanks to the kids entering their teenage years so lot's of condensation and little venting going on.

    A little bit of bleach in water (5:1 ratio) scrubbed on seems to have removed some of the external mould. I'll see whether more frequent venting over the next few weeks stops and/or (hopefully) reverses the rot!


  • Registered Users, Registered Users 2 Posts: 7,517 ✭✭✭Outkast_IRE


    I can highly recommend getting a proper dedicated bathroom paint. We had a similar issue to yours and got some of the Dulux Bathroom paint, we followed all the instructions with it and over 2 years on now and its still perfect. The paint is a little bit more expensive and needs two full coats but its worth it.


  • Registered Users, Registered Users 2 Posts: 28 oxomoxo


    Thanks for the great advice


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  • Closed Accounts Posts: 1,590 ✭✭✭agusta


    BenEadir wrote: »
    Only a few days in but I've implemented a rule that the window must be left slightly unlocked so there is a bit of a vent going on. The window is in an upstairs bathroom which has a shower but doesn't have an extractor fan which is now getting increased usage thanks to the kids entering their teenage years so lot's of condensation and little venting going on.

    A little bit of bleach in water (5:1 ratio) scrubbed on seems to have removed some of the external mould. I'll see whether more frequent venting over the next few weeks stops and/or (hopefully) reverses the rot!
    Ideally you should really get an extractor fan fitted too.


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


    agusta wrote: »
    Ideally you should really get an extractor fan fitted too.

    +1 extractor fan
    I bet the effect area is the point where insulation is missing. So at that location the internal surface is cold.


  • Registered Users, Registered Users 2 Posts: 4,539 ✭✭✭BenEadir


    Thanks, I'll look into installing an extractor fan.


  • Registered Users, Registered Users 2 Posts: 13,151 ✭✭✭✭Calahonda52


    BryanF wrote: »
    +1 extractor fan
    I bet the effect area is the point where insulation is missing. So at that location the internal surface is cold.
    leading to stuff like this.

    The wall vent over the bath is awesome!
    almost certified passive!

    “I can’t pay my staff or mortgage with instagram likes”.



  • Closed Accounts Posts: 762 ✭✭✭PeteFalk78


    Used to have terrible problems with mould in my bathroom. After making the following changes I've virtually eradicated any build up of mould.

    1) Paint walls and ceiling with special bathroom paint
    2) Put in a decent extractor fan. I used an icon30 with a 10min over-timer.
    https://www.tlc-direct.co.uk/Images/Products/size_3/ADICON15.JPG
    3) I covered in the top of the shower using plexiglass and struts. Containing the steam to the shower
    http://i47.tinypic.com/35k5xme.jpg


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  • Registered Users, Registered Users 2 Posts: 10,225 ✭✭✭✭dodzy


    PeteFalk78 wrote: »
    Used to have terrible problems with mould in my bathroom. After making the following changes I've virtually eradicated any build up of mould.

    1) Paint walls and ceiling with special bathroom paint
    2) Put in a decent extractor fan. I used an icon30 with a 10min over-timer.
    https://www.tlc-direct.co.uk/Images/Products/size_3/ADICON15.JPG
    3) I covered in the top of the shower using plexiglass and struts. Containing the steam to the shower
    http://i47.tinypic.com/35k5xme.jpg

    1. Check
    2. Check
    3. WTF :eek:? I think that's a bit mad Ted.


  • Closed Accounts Posts: 762 ✭✭✭PeteFalk78


    dodzy wrote: »
    3. WTF :eek:? I think that's a bit mad Ted.

    Haha yeah. Since that pic I put in chrome struts to hold in the plexiglass. Looks much better - looks like a full height shower I suppose.

    Certainly means that little or no steam is getting out from shower. No fogged up mirrors and windows ;)


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