The revised document discusses how H+H aircrete blocks and Thin-Joint System can help meet regulations when used with different levels of insulation. The new criteria that must be met is as follows:

• For new homes an approximate 6% improvement to CO2 targets on Part L 2010, with a focus on fabric performance.
• For non-domestic buildings there is an approximate 9% improvement, consistent with fabric focused approach for homes.
• There is to be no uplift in fabric energy efficiency standards for work on existing homes or non-domestic buildings.