The Met Office has issued a key piece of advice for UK households struggling with sweltering upstairs bedrooms during the current heatwave. Upper-floor rooms can be five to 15 degrees hotter than the rest of the property, with the master bedroom often the worst affected due to its height and larger windows.
According to the Met Office, the most effective way to keep upper rooms cool is simple: close curtains or blinds in rooms that face the sun. This prevents heat from building up indoors, acting as a barrier against solar radiation. If no blinds are available, hanging a bedsheet or towel over the window can achieve a similar effect.
Why Upper Floors Are Hotter
The temperature difference between floors is due to basic physics: warm air rises because its molecules spread apart, making it lighter, while cooler denser air sinks. This natural convection traps heat on upper levels, making bedrooms feel like furnaces even when the ground floor is comfortable.
While it may seem counterintuitive, the Met Office also recommends keeping windows and doors shut during the hottest part of the day to retain cooler air inside. Once evening temperatures drop, opening windows allows cooler air to circulate and ventilate the home.
Additional Tips for Better Airflow
Leaving all interior doors open can boost airflow on upper floors, preventing heat from becoming trapped in individual rooms. Proper ventilation is crucial for maintaining a comfortable indoor environment during heatwaves.
These measures, endorsed by the Met Office, offer a low-cost and effective way to cope with soaring temperatures without relying on air conditioning.
