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Housing - Renovation: Condensation

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1 to 9 of 9

  1.  
    • CommentAuthorJune
    • CommentTimeNov 13th 2007
     
    We have just moved into a 300-year old house. In the bedroom, there is an original stone mullion window - three panels of each, with the vertical pillars in stone, but the panes separated horizontally in two by a metal bar. The glass is very thin, and very prone to condensation - even if we leave them open overnight (which I don't quite understand...). The water which collects can be considerable, collecting on the stone sill and running off - clearly a long-term problem, as there is mould.

    How best to deal with this attractively?!

    June
    • CommentAuthortony
    • CommentTimeNov 13th 2007
     
    Sometimes there are small chanels or tiny gutters in the bottoms of the sashes or cills. These should be drained away to outside via thin tubes with fibreglass plugs in them.
    •  
      CommentAuthorJ..M
    • CommentTimeNov 15th 2007
     
    Air conditioning shifts condensation issues tout suit
    • CommentAuthorbiffvernon
    • CommentTimeNov 16th 2007
     
    There's no solution, just ways of mitigating the problem. Increase ventilation in the house and reduce sources of humidity. Open bathroom window when showering, kitchen window when cooking, dry your washing outdoors etc, get a dehumidifer. Some of these measure increase you carbon footprint so maybe it's best to just wipe the window with a tea towel.
    •  
      CommentAuthorSpike
    • CommentTimeNov 16th 2007
     
    I am facing the same problem and looking at secondary glazing. The condensation is caused when the moisture in warm, relatively humid air suddenly cools and condenses on your cold window. Secondary glazing will help keep the warm air away from the window and also reduce heat loss/save energy. Of course, secondary glazing doesn't look fantastic, but it can be removed in the summer and, hey, life is full of compromises. Try Storm Windows for a look-see, but there are other companies who also market their systems on the basis of minimum impact on historical windows.
    • CommentAuthorchuckey
    • CommentTimeNov 16th 2007
     
    I have this problem everywhere in my stone cottage. It is very bad in the bathroom. The idea of a fan or an open window is a no-no because of the high winds around here. I am cogitating on the idea of a "cold" panel to actually generate condensaton that can be drained away. If it is cooled by the flow of the cold water, it will not cause any carbon overhead. Any one got any comments or better ideas?
    Frank
    • CommentAuthortony
    • CommentTimeNov 16th 2007
     
    You are talking about a dehumidifier.
    • CommentAuthorchuckey
    • CommentTimeNov 17th 2007
     
    Tony I have a cheap mains powerd De- humidifier, its a load of junk also I think that building in a system that is totaly passive, silent, maintenance free and free to "run" is a no-brainer. Another way to go is a venting system with a heat exchanger to transfer the outgoing heat into the incoming air. I have looked at the various model as featured in another thread. The problem is that the manufacturers talk about "up to 80% heat recovery", not what they will actually do in practice.
    I am open to other peoples experiments and/or experiances.
    Frank
    • CommentAuthortony
    • CommentTimeNov 17th 2007
     
    Whole house ventilation could and almost certainly would work well but it is more expensive than the other suggestions especially the tea towel one.

    Everyone else wastes 100% of their ventilation losses so turn down the fan speed on your system and you will win big time.

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