RESIDENTIAL PROJECTS / Pinner Road, Harrow
CLIENT: Breyer Group/A2Dominion
CONSTRUCTION VALUE: £150k
As part of the Technology Strategy Board’s Retrofit for the Future competition, the refurbishment of 306-308 Pinner Road was carried out to achieve a reduction in CO2 emissions and energy usage of 80%.
The aim of the proposal was to provide a readily available, repeatable and cost effective solution, attractive to social landlords which would not require changes in tenant behaviour, could be installed with the tenant in-situ and is dependant on off the shelf products enabling a large scale roll out.
The outline strategy was to first achieve savings via passive means, then add renewable technologies to achieve the required level of performance.The strategy comprised:
1. Improvement of thermal performance and airtightness to the building fabric reducing the operational energy load. This was achieved through improving U-values and reducing cold bridging via the addition of insulation to the raised ground floor, rendered insulation to the external elevations plus multifoil insulation to the roof. Existing windows and doors were replaced with triple glazing.
2.Reduction in energy demand through efficient building services and appliances. This was acieved through replacement 90.1% efficiency gas boiler with timer controls, plus thermostatic radiator valves fitted to all existing radiators to reduce hot water and heating loads. Electrical loads were reduced via energy saving lightbulbs and A+ rated white goods throughout. A Passivent ventilation system was also installed minimising energy demand.
3. Contributing towards the reduced energy demand through the use of renewable technologies. Photovoltaic and Solar Hot Water panels were added sized to meet anticipated tenant demand.
Project & Images by A. Nuttall @ Cole Thompson Anders