This web tool has been developed to assist when choosing retrofit adaptations to reduce dwelling overheating during heat wave periods, whilst also considering the effect on annual heating energy use and cost. The results are based on modelling the effects of adaptations when applied to base case (unadapted) dwellings during the August 2003 heat wave, where London temperatures exceeded 37°C and over 2,000 people died from heat related health problems.

Building Type Description
Detached Detached House The Detached House is constructed to the 2006 UK Building Regulations and features brick/block cavity walls with cavity insulation, dry-lined using plasterboard on dabs. The loft space has 300mm of joist-level insulation and the windows are uPVC low e double-glazed. The ground floor is block and beam concrete with insulation beneath and an air gap to the soil.
Terraced Terraced House The Terraced Houses are typical of ones constructed towards the end of the 19th century. They have solid brick walls and a suspended timber ground floor. Some modernisation work has been carried out, including the addition of 100mm of loft insulation and the replacement of the single-glazed windows with uncoated uPVC double-glazing. The rear extensions, housing the kitchens and bathrooms, were added during the 20th century and have uninsulated brick/block cavity walls and solid concrete ground floors.
Semi-Detached Semi-Detached House The Semi-Detached House is typical of those constructed from the 1930s to the 1950s. It has uninsulated brick cavity walls and the ground floor is uninsulated solid concrete. Some modernisation work has been carried out, including the addition of 100mm of loft insulation and the replacement of the single-glazed windows with uncoated uPVC double-glazing.
Flats Flats The Block of Flats was constructed in the 1960s and has uninsulated cavity walls. The ground floor is uninsulated solid concrete and the roof is a cold roof design, with 50mm of insulation and an ashphalt covering. Some modernisation work has been carried out, including the replacement of the single-glazed windows with uncoated uPVC double-glazing.