H+H has produced a technical update for the new Approved Document Part L, which comes into effect on 6th April 2014. The document explains how Celcon Blocks can be used to meet the new regulations in different types of construction. The primary criteria for new homes that must now be met is an approximate 6% improvement to CO2 targets on Part L 2010, with a focus on fabric performance. There is to be no uplift in fabric energy efficiency standards for work on existing homes. The update introduces an additional target, the Fabric Energy Efficiency (FEE) rate, to ensure that a design has good levels of fabric insulation that is a long lasting and permanent solution. All H+H aircrete blocks and its Thin-Joint System can help builders to meet the new criteria when used with different levels of insulation. The technical update explains how varying U-values, ranging from 0.28 – 0.18 W/m²K, can be achieved by balancing various elements of the structure and trading one off for another.
