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When using insulation between pitched roof rafters and using counter battens with a breathable membrane, do I need to leave an air gap below the nilvent breathable membrane?

April 26, 2017air battens breathable counter insulation leave membrane pitched rafters roof

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When using insulation between pitched roof rafters and using counter battens with a breathable membrane, do I need to leave an air gap below the nilvent breathable membrane?

1 Answer

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No, providing that the counter battens have been installed above the nilvent (breathable membrane) and that the nilvent is installed taut across the rafters.