Do solar shades block heat?

Solar shades keep the sun outside, but do they block heat, too? The answer is yes, but there are some ifs and buts.

Discover how sun shading systems reduce the indoor temperature and which products are the most efficient heat blockers.

How solar shades keep the heat outside

You might wonder why solar shades are effective in reducing the indoor temperature, but the answer is quite simple:

You cover your window by rolling out an awning, blind, or roller shutter. A covered window lets less sunlight into your home.

Not only does the sun radiate a lot of light: it transfers a fair amount of heat as well. So the darker your room is, the less heat is let in. This results in a slower room temperature increase — even during the hottest summer days.

Can I cool my home with solar shades?

We call solar shades ‘passive coolers:’ they limit the temperature rise but can’t cool a room just like an air cooler does. Solar shades prevent homes from overheating. They don't cool down overheated homes.

By how many degrees can I limit the temperature increase with solar shades?

Check out our zipscreen calculator to find out how vertical awnings benefit your home. If the situation is right, you can decrease the maximum temperature my multiple degrees Celsius.

Which solar shading strategy should I use to reduce the heat?

If you want to effectively prevent overheating during a hot summer day, we recommend you roll your awnings in and out at the right times. It is also important to keep your windows closed throughout the day, so that you won't let in any hot air.

When to keep your windows and awnings opened and closed.

Which solar shading products are the most effective heat reducers?

Vertical sun shaders like blinds, roller shutters and zipscreens are the most efficient heat reducers. They cover your windows entirely, so that as much sunlight as possible is blocked.

External sun shading devices, specifically zipscreens and roller shutters, are the most efficient heat blockers.

More information

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