Air Tightness Testing and Measurement Association (ATTMA)
Technical Standard L1 Measuring air permeability of building envelopes (dwellings) .
BR 443 Conventions for U-value calculations . (www.bre.co.uk/uvalues)
BRE Report BR 497 Conventions for calculating linear thermal transmittance and temperature factors [2007 and 2010 amendment and conventions].
ISBN 978 1 86081 986 5
Information Paper IP 1/06 Assessing the effects of thermal bridging at junctions and around openings in the external elements of buildings .
ISBN 978 1 86081 904 9
BSRIA BG 8/2009 Model Commissioning Plan.
Chartered Institution of Building Services Engineers (CIBSE)
TM 36 Climate change and the indoor environment: impacts and adaptation .
ISBN 978 1 90328 750 7
Department for Energy and Climate Change (DECC)
The Government's Standard Assessment Procedure for energy rating of dwellings, SAP 2012. (Available at www.bre.co.uk/sap2012)
Department for Communities and Local Government
National Planning Policy Framework .
Domestic Building Services Compliance Guide .
Domestic Ventilation Compliance Guide 
Notice of Approval of the methodology of calculation of the energy performance of buildings in England
National Association of Rooflight Manufacturers (NARM)
Technical Document NTD 2 Assessment of thermal performance of out-of-plane rooflights .