Using roof blinds to save energy

Rising energy costs have made energy efficiency a top priority for everyone.

Blinds and shutters are a proven way to save energy. They should be considered like other building energy efficiency measures and are typically low cost and can make a real difference.

In the winter, during the day when it is sunny, open blinds to benefit from the free solar energy from the sun and close them in the evening to provide extra insulation and reduce heat loss to save energy and money.

In summer, the process is reversed and closing the shading during the day can stop heat build up in the room while opening them during the evening when the temperature is cooler allows some of the heat to escape with ventilation.

External shading fitted to the outside of buildings such as venetians and awnings are widely used in warmer countries, acting as a shield to stop the heat entering the building. With rising summer temperatures in the UK, external shading would be effective for areas exposed to direct sunlight.

The data has it…Blinds make better winter energy savings

New independent research by the University of Salford’s Energy House Labs has demonstrated that blinds and shutters can reduce heat loss through windows by up to 33%*.

Commissioned and funded by the British Blind and Shutter Association (BBSA), the data shows that window blinds and shutters can have a significant positive impact on energy savings.

Energy Saving by type of blind and shutter

Several types of shading products were tested on a modern, double glazed window and the following summary was provided:

*Results from product tests at University of Salford’s Energy House Laboratory. Centre pane U-value measurements on a modern double glazed low-e window. Improvements shown above are against the same window with no covering. In 2020 87% of English homes had full double glazing (English Housing Survey 2020-2021 – Department for Levelling Up, Housing and Communities).

Winter & Summer Tips

Blinds and shutters can cut down heat loss through windows – Winter

Let heat in during the day

Open blinds and shutters early in the morning when sunny to use the free solar energy from the sun to warm your home.

Keep heat in at night

Close blinds and shutters in the night to provide extra insulation helping to reduce heat loss, keep warmer and save energy.

Did you know?

Here are some of the top energy facts for you to consider.

Homes more likely to overheat – Summer

The Government website provides information on how to keep cool at home and identifies homes that can sometimes overheat during the summer.

Top floor flats because heat rises.

Homes with opening windows on one side of the property, which means there is less ventilation.

Homes with little external or internal shades.

Large east, west or south-facing windows which do not have shade from the sun – external shutters or awnings or internal curtain and blinds

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