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How much space is optimal between the window and the membrane?

April 26, 2017membrane optimal window

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How much space is optimal between the window and the membrane?

1 Answer

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The optimal air gap is anywhere between 10 mm and 20 mm, however a wider air gap (up to 100 mm) will still provide effective window insulation. Less than 10 mm and you run the risk of the membrane (which is flexible) adhering to the window glass.