Difference between Roof Windows and Skylights


Even though they may look the same from the outside, roof and skylight windows serve pretty different purposes. Wherever you are, you can find a reliable company offering roof and skylight windows that work well in your home.

There are many different types of roof windows and skylights available. In line with that, you should know what those types are before purchasing. This article will compare and contrast skylights and roof windows to help you choose the right one for your home.

How do Skylights and Roof Windows Differ?


Skylights are available in two distinct designs that set them apart from regular windows: deck-mount and curb-mount versions. The curb-mounted skylights are cylindrical, while the deck-mount ones can be either rectangular or square.

On the other hand, roof windows are also available in a variety of designs, and many of them are identical to standard windows. Casement and awning windows are both examples of roof windows. Some can be opened from the outside, while others are permanently locked and can only be accessed from the inside.

How They Operate

Open skylights are not frequently seen in most buildings. Even while airflow is essential, skylights are usually opened for illumination. On the other hand, roof windows can be opened widely like casements to let in plenty of fresh air. However, you can also find roof windows without screens.

What Makes Roof Windows and Skylights Different?

The terms roof window and skylight are often used interchangeably. However, they are not the same. Both options bring light into a room, but one requires more effort to install.

Unlike window skylights, which can be attached to a curb, roof windows must be installed perpendicular to the roof slope while maintaining a minimum of 15 degrees pitch. The roof windows do more than just let in some fresh air; they also provide easy access to the roof.

Did you know that the European Union requires that any roof windows sold inside its borders bear the CE mark? This shows that every roof window has a performance statement explaining how well the unit works under rigorous conditions.

On the other hand, most skylights are fixed, so it would be hard for you to change your position. With that in mind, a roof window might be the best option if you need to go up there for some roof repairs.

Roof windows are a better option than skylights, especially when constructing an attic. While this type of window act as a roof window in other parts of the house, roof windows serve as an ordinary window in an upstairs bedroom. On the other hand, using skylights means allowing a lot of heat and light in one room without transferring to other areas.


Roof windows and skylights allow plenty of natural light and ventilation. However, roof windows are more commonly used for ventilation and lighting since skylights occupy valuable wall space and might need a pole window opener.

Despite that, installing either roof windows or skylights in your property is still ideal as it improves overall aesthetic value, which allows you to ask for a higher selling price.


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