The aim of the project is to validate the cost, time and energy effectiveness of domestic retrofit across different house types, using an approach that could be employed to improve the energy efficiency of the vast majority of the existing 26 million homes in the UK which will still be in existence by 2050.The novel, mass-scale retrofit approach being tested was first developed in a deskbased ETI project (“Optimising thermal Efficiency of Existing Housing”) completed in 2012, as part of the ETI Buildings programme.The 20-month long, £475,000 project will retrofit five types of domestic property, identified and prioritised in the earlier ETI project.
This report is Part 1 of the two-part summative report for the Energy Technology Institute’s “Domestic Retrofit Demonstration Project”, part of the “Smart Systems and Heat (SSH)” programme.The underpinning hypothesis for this project was that the Retrofit Approach can be developed to meet the targets set in the ETI’s “Optimising thermal Efficiency of Existing Housing” project and viably deliver domestic retrofit to large numbers of dwellings.
The project identified the top 10 house typologies in the UK based on the typical total carbon dioxide emissions from each typology and the total number of that typology in the UK, i.e.The groups of houses by type which emit the most carbon dioxide emissions. Through modelling of the associated energy consumption reductions and quantification of the corresponding carbon dioxide emission savings, packages of retrofit measures where developed for each of the 10 housing groups.
A top-to-bottom retrofit installation process was developed, by analysing the most cost-effective package of retrofit measures suitable for a particular property; through to installation with the minimum disruption to the householder.The skills required of the workers in the installation team were identified as well as the optimum material distribution networks to supply them with exactly what is required and when. It was determined that time and cost is wasted due to the multiple trades visiting a house to undertake retrofit work, often in sequence over many weeks. Besides the impact this has on increasing costs, and lengthening installation programmes, it has a disruption impact on householders. It was therefore proposed that a multi-skilled team of 4 people should be used to complete work on individual homes. That team would not rely on external trades to complete the work ...
This report is Part 1 of the two-part summative report for the Energy Technology Institute’s “Domestic Retrofit Demonstration Project”, part of the “Smart Systems and Heat (SSH)” programme.The underpinning hypothesis for this project was that the Retrofit Approach can be developed to meet the targets set in the ETI’s “Optimising thermal Efficiency of Existing Housing” project and viably deliver domestic retrofit to large numbers of dwellings.
The project identified the top 10 house typologies in the UK based on the typical total carbon dioxide emissions from each typology and the total number of that typology in the UK, i.e.The groups of houses by type which emit the most carbon dioxide emissions. Through modelling of the associated energy consumption reductions and quantification of the corresponding carbon dioxide emission savings, packages of retrofit measures where developed for each of the 10 housing groups.
A top-to-bottom retrofit installation process was developed, by analysing the most cost-effective package of retrofit measures suitable for a particular property; through to installation with the minimum disruption to the householder.The skills required of the workers in the installation team were identified as well as the optimum material distribution networks to supply them with exactly what is required and when. It was determined that time and cost is wasted due to the multiple trades visiting a house to undertake retrofit work, often in sequence over many weeks. Besides the impact this has on increasing costs, and lengthening installation programmes, it has a disruption impact on householders. It was therefore proposed that a multi-skilled team of 4 people should be used to complete work on individual homes. That team would not rely on external trades to complete the work ...