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Airtightness: Build Tight and Achieve Compliance in the UK

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Part L of the UK Building Regulations 2010 sets challenging targets for the reduction of CO2 for all new buildings and dwellings. This revision sees a 25% reduction in CO2 over targets set for 2006 for dwellings and an aggregate of a 25% reduction for non-domestic buildings.

Future revisions to Part L are expected in 2013 and 2016, which are predicted to set even higher standards for energy efficiency.

While the limiting level for airtightness has remained unchanged from 2006 it is worth noting that to achieve these new targets and be compliant with Part L 2010 (and beyond) new buildings will need to be evermore airtight.

This course provides a background on the airtightness requirements of Part L, examples of common air leakage paths, the principles for designing and constructing an airtight building and information on air pressure testing required to demonstrate compliance (with clarity on testing sample sizes for domestic developments).

Building Research Establishment (BRE)
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