Energy-led retrofitting of solid wall dwellings – technical and user perspectives on airtightness

Phillip Frank Gower Banfill, Sophie Ann Simpson, Victoria Haines, Rebecca Mallaband

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)
92 Downloads (Pure)


Mechanical ventilation with heat recovery (MVHR) is increasingly being promoted in the UK as a means of reducing the CO2 emissions from dwellings, and installers report growing activity in the retrofit market. In parallel with a survey of householder preferences and practices, the behaviour of a whole-house MVHR system installed in an experimental house, purpose built to typical 1930s standards, has been simulated.
The range of air permeability values corresponded to those achieved in a retrofit upgrading process carried out on the house. In the house considered, air permeability, as measured in a 50 Pa pressurisation test, must be reduced below 5 m3/m2.h for MVHR to make an overall energy and CO2 saving. This required a level of disruption that would be unlikely to be tolerated by owners of solid wall dwellings.
Original languageEnglish
Title of host publicationCOBRA 2011, Proceedings of RICS Construction and Property Conference
Number of pages11
Publication statusPublished - 2011
EventCOBRA 2011, RICS construction and property conference - Salford, United Kingdom
Duration: 12 Sep 201113 Sep 2011


ConferenceCOBRA 2011, RICS construction and property conference
CountryUnited Kingdom


  • airtightness
  • dwellings
  • householders attitudes
  • mechanical ventilation

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