Technical Guidance Documents are published to accompany each part of the Building Regulations indicating how the requirements of that part can be achieved in practice.
Adherence to the approach outlined in a Technical Guidance Document is regarded, as evidence of compliance with the requirements of the relevant part of the Building Regulations.
Primary responsibility for compliance with the requirements of the Building Regulations rests with the designers, builders and owners of buildings.
The 2005 edition added requirements for limiting the emissions of CO2. It also partly transposes the EU Energy Performance of Buildings Directive - EPBD (2002/91/EC of 16 December 2002).