The clients wanted to improve the thermal comfort of their property while reducing their contribution to climate change by investing in eco-energy.
The property is contained within a Grade 2 listed terrace house in Kemp Town Brighton. The ground floor and basement have been converted into separate flats and the property is the top maisonette consisting of the 1st and 2nd floors.
The building is a solid masonry construction with timber windows, a ‘butterfly’ pitched roof (orientated south/north) to the main part of the building and a rear outrigger with a flat roof. Much of the original structure remains intact or is in evidence in the building and the windows in the main part of the property are the original traditional timber sliding sashes. An office located in the rear outrigger is a later addition to the property and is accessed half-way up the stairs over the original kitchens below. The exterior walls of the office are single skin masonry, the window was a single glazed softwood casement and the roof flat is finished with roofing felt with no insulation at all. The property is listed and any works needed both Listed Building consent and planning approval.
The office was unusable in the colder months and it had a detrimental impact on the thermal comfort in the rest of the property. The solution was to install internal wall insulation (IWI) to the external walls and to the ceiling of the office and fit a new double glazed timber casement window. The IWI was a 100mm PIR thermal insulation board, finished with plasterboard, a 5mm plaster skim and then painted white.
The south-facing slope of the ‘butterfly’ pitched roof allowed the installation of eleven 0.8m x 1.6m photovoltaic (PV) panels. The PV panels were fitted to the roof slope in the same plane as the roof tiles and are not visible from the public realm.
The office is warm and usable and its improved thermal performance has had a significant and positive impact on the comfort of the whole property. The PV panels have reduced the client’s energy bills, they have given them a return on investment of approximately 10% per annum and the clients are contributing to the reduction in global warming.
“The work in the back room has drastically improved the way we live in our flat. In winter months the flat is now comfortable in every room and is sunny and airy through summer. We are also extremely pleased that Martin’s work meant it was straight forward to install PV solar panels across our roof. We really enjoyed working with Martin and would not hesitate to work with him again.”
Jackie & Mark, Brighton