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Old Farmhouse Wall Dampness

  • 30-09-2019 12:57pm
    #1
    farmer2018
    Registered Users Posts: 597 ✭✭✭


    Hi All, I have a big problem with dampness in a old stone wall cottage. There is a problem with dampness around the windows and bottom of the walls. The walls were slabbed a number of years ago with kingspan insulation boards, but that doesn't seem to have solved it as clothes are getting destroyed in some of the rooms.

    Can people share their experiences, give advice or know of any experts to talk on this topic.


Comments

  • #2
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,143 Mod ✭✭✭✭BryanF


    Putting insulated slab over a damp wall just temporarily hides a damp issue. Search ‘old stone wall insulation’, there’ll be detailed advice going back ten years on boards.ie


  • #3
    CaptainCoPilot
    Registered Users, Registered Users 2 Posts: 59 ✭✭CaptainCoPilot


    In short, old farmhouse walls have to be carefully managed, the key point being breathability. Covering over them with insulated slab or gypsum based plaster causes a long term problem that you are now experiencing.

    Be wary of companies offering solutions involving injecting chemicals into your wall, or covering damp with special paint.

    Look up Peter Ward on Youtube for some understanding and details on what might be involved to rectify your situation.

    However, you can expect stripping back the walls to the stone and recovering with an appropriate lime render and appropriate insulation if desired.


  • #4
    sarahmc92
    Registered Users Posts: 32 ✭sarahmc92


    I read this ebook from SEAI it's very informative. As one person already mentioned sealing up farmhouse walls can be a bad idea. They need to breathe and were designed over many hundreds of years to do so. I'm not sure what the best course of action is going forward other than to find a surveyor or architect who is sympathetic to traditional houses. They will guide you on the best way forward.

    https://www.seai.ie/publications/Energy_Efficiency_in_Traditional_Buildings.pdf


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