Policy information sourced from the Islington Local Plan
S6 Managing heat risk
- Development proposals must minimise internal heat gain and the impacts of the ‘urban heat island effect’ through design, layout, orientation and materials.
- All developments (excluding smaller minor extensions) must demonstrate, as part of the SDCS, how the proposed design will reduce the potential for overheating and reliance on air conditioning systems, and maximise the incorporation of passive design measures in accordance with the following cooling hierarchy:
- minimise internal heat generation through energy efficient design.
- reduce the amount of heat entering a building through orientation, shading, albedo, fenestration, insulation and the provision of green roofs and walls.
- manage the heat within the building through exposed internal thermal mass and high ceilings.
- provide passive ventilation, such as cross ventilation.
- provide low energy mechanical ventilation.
- Use of technologies from lower levels of the hierarchy will not be supported unless evidence is provided to demonstrate that technologies from higher levels of the hierarchy cannot deliver sufficient heat control.
- Major developments are required to include details of internal temperature modelling under projected increased future summer temperatures, to demonstrate that the risk of overheating has been addressed as part of the SDCS.
- Smaller minor extensions (those smaller than 100sqm) are encouraged to reduce the potential for overheating through the design of the extension, with particular reference to levels 1, 2 and 3 on the cooling hierarchy. The use of active cooling measures will not be accepted, unless it can be demonstrated that other methods higher up the hierarchy cannot be used to deliver sufficient heat control.
For more information please see the Islington Local Plan