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Improving air tightness in new dwellings

Posted on April 5th 2010

The importance of air tightness in new dwellings Up to 30% of heat losses in a modern, well-insulated building are estimated to result from ‘air leakage’. Heat escapes through gaps in the building envelope, such as around a pipe fitting, or between poorly fitted slabs of wall insulation. This is heat loss by ‘convective bypass’, and in the worst case …

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