What are the Costs in Fitting Velux Windows?

John Davies December 14, 2020

If your home is rather dark or you want to improve the aesthetics of a room, a skylight could be a perfect solution. There are many types of skylight window manufacturers with one of the most popular one being Velux. The company has shown time and again that they are the best in this area which is why many people find it the most reliable option.

Velux windows are robust, stylish and easily customisable in case you need any additions that may not come with the window. It has numerous benefits in any home other than the fact that you get more light in the room. It is an excellent addition if you love looking at the sky without going outside. Regardless of what you want one of these, you must understand what to expect especially concerning price. Here you will get more details on how much a window of this type will set you back for first-time installation and repair as well as other information that you might need.

Cost of Installing and Repairing Velux Windows

The price of installing Velux windows varies depending on the type and size that you want.

There are also some additions that you may wish to make, which may also make the price higher, but that is absolutely up to you. Installing a Velux window with the help of a professional should only take a couple of hours mostly half a day for a single one. The following are the average prices for small and large Velux windows:

  • Small window (16” x 24”) – This is a small window that is great for rooms that are not too big, but you would like some more light in there. Expect to pay between £900 and £1,100. This price includes the cost of buying the skylight and installing it through a professional. Any other modifications that are not included in the quote will cost you extra.
  • Large window (24” x 72”) – This large skylight is most suitable for large rooms, for example, your bedroom, kitchen or stairwell if you would like one. It will set you back between £1,300 and £2,700 on the lower side; however, the price can also go up to £3,000 depending on the location and the ability to access the roof.

The great thing about repairing a Velux window is that you don’t have to take out the whole thing. An expert can quickly swap it out in just a few minutes, especially if it is the same size. It may take longer if you need a different size and it will cost more than the average replacement. The good news is that unless the window becomes damaged, you may not need to replace it for up to 30 years.

Replacement for a small window can cost around £200 – £700 while a larger one will cost between £1,100 and £1,300. If your alternative is a different size from the space available, calculate it like you are getting a newly done skylight so the prices above should be more or less accurate.

Type of Velux JobSmall Window (16” x 24”)Large Window (24” x 72”)
Installation£900 – £1,100£1,300 – £2,700
Repair£600 – £900£1,100 – £1,300

What Factors Affect the Price of Installing Velux Skylight?


If you would like to improve how well your skylight maintains heat in the room, then glazing is a must. There is single, double, and triple glazing that helps seal the space between the windowpane and the frame. It is an extra precaution also to ensure that the window remains in good shape for longer. This will cost you about £50 which only covers the cost of materials.


This is another optional addition that you may want if your Velux doesn’t come already tinted. It is an excellent way of reducing how much sunlight you get especially if you get a lot of sunlight that focuses on the wrong place (for example a desk with a computer if below). There are a variety of colours with different intensities that will cost between £85 and £350.

Low-E Coating

If you don’t want to install a tint because it affects the brightness of the room, then the low-E coating is what you need. It helps to minimise how much UV and infrared rays access your home without affecting the brightness. They also cause fading of furniture and other items in your home.


It ensures that the edges near the roof are well-sealed since they can lead to heat loss and may affect how long the skylight lasts. It is a requirement if you get an exterior opening so in many cases, it may be included in the installation.

Electrical Remote Control

For remote-controlled skylights, you will need to budget extra for the electrical wiring required to fulfil this. Many installers don’t do this so you will need to get a certified electrician to assist or get a recommendation from your contractor. Buying the costs of the required materials between £70 and £300 and the electrician’s fee is not included so you should remember that.

This is probably something you can do yourself if you’re willing to follow a tutorial.

What are the Benefits of Velux Skylight?

Velux windows instantly improve the aesthetics of a room no matter how small it is. There is more than you can gain from installing one as follows.

Increase the Value of Your Home

It is impossible to miss a skylight since it stands out in any room and makes it instantly better. Real estate agents sometimes advise homeowners to consider installing one in a home they intend on selling. It impacts on the buyer so you can easily ask for more.

Makes the Home Brighter

Rather than install a regular window in a room that is a bit dark, it’s better to have skylight even a small one will give you at least 30% more light. This not only makes the room brighter but even more beautiful whether it was a small abandoned room or even bedroom. It completely changes the outlook of everything.

Improves Energy Efficiency

Dark rooms force you to have your lights on even during the day, which can quickly escalate your bills depending on how many rooms there are. However, a Velux window helps to bring so much natural light from a small window to a large one so you can conserve power. Insulating your skylight is also very important since it reduces the loss of heat which means your home will be warmer and your bills smaller.

If you don’t mind going the extra mile, you can have solar blinds that provide more power for your home and even reduce your heating and electricity bills further. But to be honest, this isn’t usually cost-effective, just a nice idea!

Better Ventilation

Most homes have those rooms where the ventilation is quite poor, so it gets hardly any fresh air despite having windows. The room instantly gets in fresh air due to the wind blowing from above that aerates the room.

Making Rooms Look Bigger

Lots of natural light is one secret of making a small space appear bigger than it is. Many people have mirrors to reflect the already existing light but a Velux skylight completely takes care of this problem. The best thing about these windows is that size doesn’t matter as long as you choose the correct type.

Reduced Growth of Mildew

Dark rooms, even in a well-lit and aerated house are common growth places for mildew and mould. These are very dangerous as they could cause respiratory issues and other health problems even if you only go in the room once in a while. A skylight ensures that it will get plenty of light and air which helps in discouraging buildup. Presence of sunlight is known to be a microbial killer.

Cons of Velux Windows

There is so much that you can gain from deciding to install a skylight. However, there are a few not so pleasing things that you should also consider.

It Is Expensive

The aesthetic appeal of the skylight is something to get excited about apart from the fact that it’s quite costly. Installing a regular window would cost almost a third of what a Velux window does, and it may more or less solve your problem. In case it breaks or malfunctions, getting repairs is also not cheap especially if you need to make a complete swap.

Abundance of Counterfeits

Unfortunately, due to the demand for Velux skylight, there are so many fake ones, and you may not know until later when issues arise. This is why it is important to purchase either directly from the manufacturer or get a reputable and certified installer to help you.

Heat Loss

Many skylights are usually poorly installed especially if you DIY or you hire an unqualified person to fix it which causes you more losses than if you had opted not to get one. A badly installed window will often cause loss of heat through the spaces between the frame and roof.

DIY vs. Expert Installation of Velux Windows

Due to the high cost of the skylight, many people that love to DIY often end up preferring to take on the challenge and save some money. This is perfectly fine, but you need an idea of what is required of you. It is a considerable risk to install a Velux window yourself since there is a lot of details that you must get right. However, if you’re ‘handy’ this is something you can do yourself.

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