NewScientist The Last Word - Tag 'glazing' details

Tag 'glazing' details

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why do my windows get condensation in summer and NOT in winter and could it be steam instead?

We installed secondary double glazing, one consequence of which was reduction in condensation on inside panes in winter. However, in one room, condensation (or something) appears in SUMMER on the INSIDE of the double glazing ie in between the two panes. The room is more or less south facing, so gets lots of sun over the day. Can this be condensation?

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Answered by MrScruff
on 2009-11-11 15:32:58

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We have the same thing happen in our double glazing and i believe it's down to some water getting in between the panes when manufactured / installed. The sunlight heats the air between the panes, causing the liquid to evaporate. The air between the panes is hotter than the air on the outside of the panes, leading to the evaporated liquid appearing as condensation. It's exactly the same process as warm, moist air indoors condensing on cold windows in the winter

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