EU SAVE reducing energy use and carbon emissions of heating systems

BRE is just starting a new project on behalf of the Office of the Deputy Prime Minister, Building Regulations Division on how the new requirements of the 2002 revisions of Part L1 are being implemented in refurbishment projects.

The final aim of the project is to produce ten case studies covering good practice and cost-effective measures in energy-efficient refurbishment. Approved Document L1 in the 2002 revision suggests that refurbishments should be undertaken to a reasonable  level of energy efficiency. The case studies are intended to show what can be done in a cost-effective manner..

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The project has two main phases.  The first phase attempts to define what is ‘reasonable’ compliance, the second phase is to find the ten case study projects, to monitor and assess their effectiveness, and to write up the case study reports.

BRE is seeking assistance on several levels:

1) Do you have views on what constitutes ‘reasonable’ compliance with Part L1 for different building elements in refurbishment projects?

2) Do you have any views on the difficulties associated with improving insulation, airtightness, etc. in refurbishments?

3) Do you have any projects[see definition below] that you feel have been good examples of refurbishment that you would like to put forward as a potential case study?

A proforma is provided for you to fill in some initial information (by 30/11/03 please).

Please download the proforma, complete and return to Hilary Graves at BRE (full address/fax details on the proforma), or e-mail to

['projects' defined] We are seeking projects covering large or small refurbishments of generic building types (flats, general housing types, listed buildings).  We would like a good geographic spread of projects, preferably in England or Wales.  Preferably the project will have been subject to Building Control since April 2002 (part completed projects would be acceptable).

The project could cover any refurbishment relevant to Part L1 from changes to controlled services (e.g. boiler, window, door or rooflight replacement), through material alterations (e.g. loft conversions, wall or floor insulation, sealing measures) to material changes of use (e.g. barn conversions, office or warehouse conversions).