||This project looked at designing a supply chain solution to improve the energy efficiency of the vast majority of the 26 million UK homes which will still be in use by 2050.It looked to identify ways in which the refurbishment and retrofitting of existing residential properties can be accelerated by industrialising the processes of design, supply and implementation, while stimulating demand from householders by exploiting additional opportunities that come with extensive building refurbishment.The project developed a top-to-bottom process, using a method of analysing the most cost-effective package of measures suitable for a particular property, through to how these will be installed with the minimum disruption to the householder. This includes identifying the skills required of the people on the ground as well as the optimum material distribution networks to supply them with exactly what is required and when.
This deliverable is number 1 of 7 in Work Package 2 and presents the results of a segmentation of the English housing stock.
This information has been produced by analysis of data from three years of the English House Condition Survey / English Housing Survey from 2006 to 2008. Characteristics have been chosen to be of particular relevance to thermal efficiency or the costs of improvement: the most frequently found 12 of the archetypes are discussed in detail in terms of:
- English housing stock has been split into 36 different archetypes based on the dates of construction and the dwelling configuration.
- This is to support the analysis of retrofit interventions identified on an individual dwelling basis, and their subsequent extrapolation to the entire English housing stock.
- Data on key characteristics relevant to thermal efficiency or the costs of improvement are presented for each of the housing archetypes.
A basic assessment of the potential for Thermal Efficiency improvements is also provided for each of these 12 types.
- Current notional CO2 emissions
- Predominant wall type & presence of wall insulation
- Roof type
- Percentage of glazing
- Type of glazing
- Presence of bay windows
- Floor area
- Wall area
- Roof area
- Existing loft insulation thickness
- Notional CO2 reductions following EPC recommended measures
- Presence of ‘additional part’ (an extension or extension-like area)
- Wall finish