The NHBC Foundation has published guidance to address the challenges posed by changes to Part L.
Neil Smith, head of research and innovation, said: “The guides provide a useful starting point for designing new homes to Part L 2013.
“Many in the industry struggle to get to grips with the complexities of Part L and we hope these new, clear and simple guides will help to build an understanding.
“Presented mainly as tables and construction details, this guidance should be of particular use to smaller firms that may not be as aware of the range of options available to them.”
The guides build on NHBC Foundation guidance first published in 2011 and cover the two most common forms of construction: masonry and timber frame.
The updated guides provide greater detail on the topic of thermal bridging, such as the heat loss that occurs around window openings and at the junctions between building elements.
As a first stage in the design process, house builders and designers must now decide how to deal with thermal bridging before other specification choices can be made in relation to insulation, airtightness, services and renewables.