How to Reduce Heat From Skylight or Windows?


There are great benefits of having a skylight; it can brighten up rooms, reduce heating bills, improve the look of those dare and dreary rooms, help with health and wellbeing, and provide views of the sky.

There are also cons as well which include the heat that a skylight can generate in the summer acting as a greenhouse in certain small confide spaces. You will see a comprehensive list of tips on how to keep your skylight cool and how to reduce heat from your skylight, including tips on what to do before installing your skylight as well as once the fixture is in place.

Heat From Skylight

Reduce Heat Before Installation:

If you have decided to go for a roof window to improve your home than a good way to ensure heat is reduced in those rooms that have contact with the sun is by following the installation tips to prevent having to suffer from unbarring amounts of heat in the summer. For more information on how to install a roof window read our guide on how to install a Velux roof window, the most recognised roof window in the market.

Carefully Choose the Location

Ensure that you plan ahead before you install your window. Location is very important to preventing severe heat coming from your window. According many sources skylights in west-facing sections of a roof produce large quantities of heat that may be overpowering. Installing a window at a north or south facing section of your roof will allow light to pass through brightening up your spaces without the undesirable heat.


Reduce Heat After Installation:

If you find that the before installation process has not been followed or the heat that is being generated is still unbearable then there are many types of alternative routes to keep room temperature to a minimum.

Use Skylight Covers

This known as one of the cheapest ways to prevent the heat however this mean covering over the light itself. As much as these are available they aren’t many retailers who stock these as there are items that have better benefits than these.

In order to keep you home cool and yet still maintain energy efficient there are skylight covers available. These coverings block the sun from the direct contact with the window, preventing the inside of your home becoming too hot.

Most skylight cover products absorb and dissipate up to 90 percent of the sun’s heat and glare before it reaches the glass. This allows the temperature indoor to be more efficient and air conditioned. Studies show that solar screen protected skylights can save up to 25% of the cost of air conditioning when compared to non-protected skylights. This also saves unnecessary electricity bills when having to use items such as fans and electric coolers to keep the room cool, and even fans can sometimes just blow hot air round.

Skylight covers not only reduce heat it can also help with other affects of sun when your skylight is fitted in the wrong position. It can protect form those UV rays meaning it prevents drapes, furnishing and your décor from being damaged.

They are made from durable, thick fabrics and tend to be aluminium that is contained in them. The aluminium acts as a reflector of the sunlight and helps protect the fabric from overheating and burning.

There are disadvantages to this, one of which is the whole point of a skylight is to brighten up your room with natural light. With a skylight cover it blocks the sunlight from passing which defeats the object of having a window in the first place. Another disadvantage to skylight covers is actually installing it which can be difficult to access it easily depending on where the skylight is located. This will mean having to get on the roof to install and again when the seasons change and it is no longer warm, this will mean going back up to remove the covering. Some may say this is a burden.

You maybe looking at other ways to save energy well here are some quick tips on how to save energy.


UV Reflective Films



Skylight Shades



Open Window


UV Reflective Films

Aside from aluminum, other products can be used on skylights to deflect the sun’s rays. Reflective film is often used in conjunction with skylight covers. Window film is applied in the same way as tint is applied to the windows of a car and can be stored by a homeowner or by a professional. Sputtered film is a type of reflective window film that provides a clear view. Hybrid reflective film contains dye, so it will not provide a crystal-clear view of the sky, but it does have the ability to block heat and ultraviolet rays. Using reflective window films is not as effective as using skylight covers containing aluminum, but it will minimize the amount of heat and light entering your home.

Purchasing shades for skylights is also an option for keeping your home cool and energy efficient. Shades work just as effectively as skylight covers and are usually made with aluminum as well. They come in many different styles; some of them look similar to and have the same function as window blinds. Not only will they keep your home cool, they are aesthetically pleasing as well.

Skylight Shades

Skylights are perfect for beautifying your home and saving energy; however, you must know how to keep too much sunlight from entering and overheating your home once you install them. Skylight covers are the perfect solution. They are a cost-effective way to enjoy your skylights while keeping your energy costs down.  Especially during the long, hot days in the summer months, it’s important to keep your home energy efficient and cool by covering your skylights.  Looking for other ways to save energy in your home?  Contact us today for a no-cost home energy assessment.

Bonus Tip: You can control the temperature in each room of your home by installing ductless mini-splits. Click here to learn whether ductless mini-splits are right for your home.



Install a window covering on your skylight to reduce unwanted heat. Custom-designed window shades and blinds can be fitted to your skylight to block the sun’s intense rays. Window coverings also block the light, which can defeat the purpose of your skylight if you’ve built it to light a dark room.

Open the skylight to reduce the heat. Not all skylights open, but some are made just like a window that opens and closes. The hot air that’s trapped near the ceiling will escape from your home, and you’ll still have the benefit of natural light.