distance between double glazing windows

mewla4 | 08:34 Sun 20th Sep 2009 | Home & Garden

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Does any body know what the minimum distance between double glazed windows is. I have a covered area that i want to fill in

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buildersmate

The optimal gap is reckoned to be 16mm between the panes. Any less and the 'thermal sandwich' of glass/air/glass is not making maximum use of the poor transmission of the still air in the sandwich. Any more and the air in the gap starts to move around, reducing the overall insulation effect.
There is no minimum as such - any DGU sandwich of glass/air/glass will help reduce heat transmission across the unit.

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