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Do you have standard construction details with unknown thermal bridge values?
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Do you want to use the DEAP 0.08 Y-factor but have construction details that don't agree with the Acceptable Construction Details?
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Would you like to bring your construction details up to the ‘Passivhaus Standard’ or other low carbon standards?
In 2010 the Building Regulations will require a 60% improvement in energy efficiency in new buildings over the 2005 Regulations and the move towards the much-vaunted ‘Passivhaus Standard’ is gaining ground.
Improvements in thermal bridging to a Y-factor of 0.08 W/m²K will become the norm, progressing quickly to 0.04 W/m²K and beyond, which will greatly reduce energy loss in buildings.
Accurately assessing the Linear Thermal Transmittance of each junction detail will become essential for progressive architects and developers of increasingly energy-focused clients.
Reducing thermal bridge values at construction junctions can significantly improve a building's thermal performance without requiring additional insulation elsewhere, amongst other savings. The proportion of the overall heat loss due to thermal bridging in a typical, recently built dwelling is between 10-15% and can be higher in poorly constructed buildings (ACD July 2008). Thermal bridging is simply one of the quickest, smartest and cost effective ways to limit that underperformance.
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