Do Blackout Blinds Make a Room Cooler?
28 July, 2026
When temperatures start to rise, keeping your home cool can become a challenge. Sunlight streaming through your windows can quickly turn bedrooms, living rooms and home offices into uncomfortable spaces, particularly during a heatwave.
One simple way to reduce the amount of heat entering your home is to use blackout blinds. While they cannot remove heat that is already inside a room, they can help reduce direct sunlight and the amount of solar energy coming through your windows.
So, do blackout blinds make a room cooler? They can certainly help, particularly when they are closed before the sun starts heating the room.
Windows can allow a significant amount of sunlight into your home. When sunlight passes through the glass, it can contribute to the temperature inside the room.
Blackout blinds are made using fabrics designed to block out most external light. By closing them during the brightest and hottest parts of the day, you can reduce the amount of direct sunlight entering the room.
This can be particularly helpful for windows that receive strong afternoon sunshine.
One of the most important things to remember is that blackout blinds work best as part of a wider approach to keeping your home cool.
Rather than waiting until the room is already hot, close your blinds before the sun reaches the window. This can help prevent the room from heating up in the first place.
Summer Tip: a room gets direct sunlight during the afternoon, close your blackout blinds before the sun reaches the window and keep them closed during the hottest part of the day.
Blackout blinds can be particularly useful in bedrooms during the summer months.
Longer daylight hours mean that bedrooms can become bright very early in the morning, while hot weather can make sleeping uncomfortable. Blackout blinds help block out external light, creating a darker environment that can make it easier to sleep.
They can also help reduce the amount of direct sunlight entering the room during the day, which can be useful if your bedroom becomes particularly warm.
For children’s bedrooms, blackout blinds can also be helpful during the lighter summer evenings and early mornings.
Not all blinds provide the same level of light and heat control. The best option will depend on the room, the direction your windows face and how much sunlight they receive.
Blackout blinds can be useful in almost any room that experiences strong sunlight.
They can help create a darker environment and reduce direct sunlight during the day.
Blackout blinds can help reduce glare on computer screens, particularly when working next to a sunny window.
They can help reduce glare from televisions and make bright rooms more comfortable during the hottest part of the day.
Rooms with south-facing windows can receive significant amounts of sunlight, making effective window coverings particularly useful during summer.
It is important to have realistic expectations. Blackout blinds are not an air conditioning system and cannot guarantee that a room will remain cool during extreme temperatures.
They can, however, form part of a wider strategy to reduce heat entering your home.
Other useful steps include keeping windows closed while it is hotter outside than inside, opening windows when temperatures drop, using external shading where possible and avoiding unnecessary heat from appliances.
For the best results during hot weather:
Helpful Tip: If overheating is a particular problem, consider which windows receive the most direct sunlight. These are often the best places to prioritise effective window coverings.
Blackout blinds can help reduce the amount of direct sunlight entering a room, which can help limit heat gain through windows. Their effectiveness will depend on the fabric, window and amount of sunlight the room receives.
Yes. If your windows receive direct sunlight, closing blackout blinds before the sun reaches the glass can help prevent the room from becoming unnecessarily warm.
Yes. They can reduce early morning light, limit direct sunlight during the day and help create a darker, more comfortable sleeping environment.
It depends on the product and fabric. Blackout blinds can provide excellent light control, while curtains can provide another layer of insulation. In some rooms, combining blinds and curtains can be an effective option.
If certain rooms in your home become too bright or uncomfortable during the summer, the right blinds could make a noticeable difference.
Feran offers a wide range of bespoke blinds, including blackout options, designed around your windows and interior. Speak to the Feran team to find the right window covering for your home and summer needs.
Get In Touch Today 01245 344044
Contact Us