Why it works
Why upstairs gets hotter
Short answer
Upper rooms receive roof heat and often have less shade; warm air movement and limited escape paths can add to the problem.
The simple explanation
- ✓Shade upper-floor glazing.
- ✓Reduce roof and loft heat gains.
- ✓Use safe high-level ventilation when outside cools.
Why it works
This advice follows UK Health Security Agency guidance and the underlying principles of roof heat and stack effect.
Important exceptions
Safety, health, weather and the design of your home can change what is appropriate. Stop if an action makes conditions worse.
Related guides
Sources & evidence
Reviewed 2026-08-21
- UK Health Security Agency: Beat the heat: keep cool at home checklist ↗
Supports: Shading, ventilation, reducing indoor heat and protecting people at higher risk.
official guidance · Accessed 2026-08-21