Warm moist/humid air meeting a cold barrier such as a cold window causing the airborne moisture to condense was water droplets.bofarr01 said:What exactly causes condensation
Double glazing. Dehumidification. Ventilation etc. See here.and what can be done to minimise it?
However note that double glazed units should last 10 years at least. Increase your heating and ventilation, don't dry clothes indoors (at least not excessively) and make sure any permavents are open to allow fresh air to enter habitable rooms. Keep bathroom doors closed when showering/ running a bath.Note that if you get significant condensation with double glazed windows then they are not doing their job properly (e.g. the seal on the double glazed units may be broken undermining the thermal barrier between the panes).
Doesn't this conflict with the standard advice for energy efficiency - e.g. as far as possible minimise your use of heating and eliminate draughts?Carpenter said:Increase your heating and ventilation
Thanks - the house is only 10 years old. I must check all the same when I get a chance.Carpenter said:Clubman- don't worry, the plastic pipe is used for reasons of convenience/ buildability in new construction but may not have been used in older houses.
Surely all rooms already have such vents? Hasn't this been a building requirement for years? For example, my mother's house is probably 50 years old and has them.MissRibena said:We have a good bit of condensation on the windows in the morning in my house too. I know that ventilation is the answer but am a bit unsure how to go about it. To be honest, I can't see me drilling the holes for permavents in the walls.
ClubMan said:Surely all rooms already have such vents? Hasn't this been a building requirement for years? For example, my mother's house is probably 50 years old and has them.
the answer is water vapour in the air. Some of this comes from hot water, showers, cooking etc., but most of the night time vapour comes from your breath. So, the simple answer to stopping condensation at night is:- to stop breathing.bofarr01 said:What exactly causes condensation..?
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