Design Solution · Interior & Wellbeing
Design Solution · Dream about it
Passive ventilation and shading designed to prevent summer overheating.
The design is tested for summer overheating and uses passive cross/stack ventilation, shading and openable windows to keep flats comfortable without active cooling. Noise mitigation lets occupants ventilate even on busy urban streets.
Designing explicitly for summer overheating and resolving it through passive cross-ventilation, stack effect, external shading and openable windows — rather than specifying mechanical cooling — is the correct priority order for urban residential buildings, and the additional detail that noise mitigation allows windows to remain openable on busy streets addresses the specific urban constraint that makes passive ventilation fail in practice. The approach is aligned with CIBSE TM59 methodology for overheating assessment and with the 2022 uplift to Approved Document O, so the regulatory framing is current. The record does not state the overheating assessment outcome — whether the flats pass TM59 criteria or merely adopt passive measures without confirming compliance — and no post-occupancy thermal monitoring is cited. A specifier should require TM59 outputs for the worst-affected unit orientations at both present-day and 2080 weather files, confirm that acoustic glazing and trickle ventilation provisions are adequate for the street noise level without relying on occupants opening windows fully, and verify that internal gains from appliances and occupancy have been modelled at realistic rather than conservative levels.
#overheating #passive ventilation #thermal comfort #acoustic