Low Energy Buildings | Retrofit for the Future

Welcome to the Low Energy Building Database, a repository of low-energy building information created to help inform the planning and development of low energy new build and refurbishment

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LEB News

Low Energy Buildings is re-launched

Welcome to the new and improved Low Energy Buildings website. This site contains information about energy efficient building projects in the United Kingdom, both refurbishment and new-build projects. The site aims to provide information about techniques, strategies and materials involved … Continue reading →

About the LEB

During 2009-2010, the Technology Strategy Board implemented a £17m programme known as Retrofit for the Future (RfF), to kick-start the retrofitting of the UK's social housing stock. AECB – the sustainable building association was asked to develop appropriate energy performance targets for the competition and provide ongoing support and guidance. The AECB and the TSB have developed this database as an education and dissemination tool, incorporating both the RfF projects as well as new and refurbished domestic and non-domestic low energy buildings. Find out more about the LEB

LEB Technical Reference

Grove Cottage

Extension & Refurbishment of Victorian Townhouse using Passivhaus methodology and CarbonLite guidance. Certified to the Passivhaus Institute's new EnerPHit (refurbishment) Standard. CAUTION wrt forecast vs measured performance data: first 18 months after construction work can involve a lot of 'drying out', this can potentially temporarily double space heat requirements. PHPP certification is based on 20 C, rather than the 21 C the house was heated to during 2010/11. Forecasts are based on a 'typical year' rather than the 'actual' year being monitored. Measured data here is from 2005/06 (before) and 2009/10 (after). Measured room temperatures show an average of 21 degrees centigrade during the heating season. Please note the final air leakage as certified under EnerPHit was an N50 of 1.0 ACH. When adjusted for 2010 average monthly temps.& an internal temp. of 21 C, PHPP predicted a space heat demand of 36kWh/m2.a whereas 35kWh/m2.a was measured.

Semi-Detached, Solid Brick, Refurbishment
Project owner : Simmonds.Mills Architects

Passivhaus certified building

East Cambusmoon Farm - New House

This new house replaced a run-down Victorian farmhouse, and re-attaches to a 150 year old adjacent barn. The house has four bedrooms, three bathrooms and is occupied by two adults and two young children. The site is in an exposed rural location in the west of Scotland with no shelter to previaling winds.

Detached, Timber frame, New build
Project owner : -