Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
Home » Skylight » Skylight sizes

Skylight sizes

With a skylight, you can enjoy plenty of sunlight in the attic too. A skylight also provides ventilation and gives your home a spacious feel. There are many roof window sizes, which sometimes makes it difficult to choose the right kind. Are you curious about the costs and options per skylight size? You can read all about it in this article.

Rooflight sizes: Costs

The average skylight cost is £850 to £1,300. The cost depends mainly on the skylight sizes, but also on the type of glass and extras, such as blackout. Extras are in some cases included in the price, but you usually have to buy them yourself. See the overview below for prices of the most common skylight sizes.

Size (width x height) in centimetres Average cost (including installation and VAT)
55 x 78 £ 850
55 x 98 £ 890
66 x 98 £ 920
66 x 118 £ 980
78 x 98 £ 950
78 x 118 £ 1.040
78 x 140 £ 1,120
94 x 118 £ 1,100
94 x 140 £ 1.130
94 x 160 £ 1,230
114 x 118 £ 1,150
114 x 140 £ 1,280
134 x 118 £ 1.240
134 x 140 £ 1,300

Find the best specialist for your project and get free quotes.

Start

Skylight sizes

Which skylight size do you choose?

The size of your floor space determines the size of your skylight. In a room with no other roof windows, the window area should be 10% of the floor area. With this guideline, it is easy to determine which skylight size you should choose if you want to get enough light. The smallest type is a 4-paned skylight and the largest type is a balcony skylight. See the overview below for the maximum floor area for each type of skylight.

Roof window sizes (width x height) in centimetres Maximum floor area for 1 skylight
55 x 78 4,3 sqm
55 x 98 5.4 sqm
66 x 98 6.5 sqm
66 x 118 7.8 sqm
78 x 98 7.6 sqm
78 x 118 9,2 sqm
78 x 140 10.9 sqm
94 x 118 11.1 sqm
94 x 140 13.2 sqm
94 x 160 15 sqm
114 x 118 13,5 sqm
114 x 140 16 sqm
134 x 118 15.8 sqm
134 x 140 18.8 sqm

What are the benefits of a skylight?

Whether you buy a skylight for a flat roof or for a pitched roof, your home will get a lot more light at once. Yet this is not the only benefit, check out some of the advantages of a skylight here.

Choose better ventilation

Whatever skylight size you choose, with a skylight you provide extra ventilation. Sufficient ventilation not only keeps your room fresh, but also keeps nasty dust out of your home. It also keeps humidity at a healthy level. New skylights also have a built-in ventilation grid, allowing you to air your room even on rainy days.

Increase the value of your home

Thanks to a skylight, you increase the value of your home. Here, the larger the skylight sizes are, the greater the increase in value. This is because the value of your home increases because you add an extra luxury to your home. In addition, you make a space extra comfortable to live in. So with a skylight, you make your home extra attractive to potential buyers.

Skylight sizes bathroom

Fitting a skylight step-by-step

Fitting a skylight is a job best done by a specialist. The steps the specialist goes through when installing a skylight are the same for almost all skylight sizes. See the step-by-step plan for installing a roof window below.

Step 1: Determine the position

The position of your roof window is very important if you want enough light. Therefore, think carefully about the position of the roof window. The specialist will be happy to look at it with you, because he will also know where on the roof it is possible. In some cases your roof construction will need to be reinforced with a number of reinforcement beams.

Step 2: Prepare for installation

Before installation, the specialist makes a hole in your roof construction. Do you want to replace your skylight? Then the specialist will first remove it and check if the skylight sizes match. When installing a new skylight, the specialist removes the roof from the inside. Finally, he removes the roof tiles. He removes an extra row of roof tiles so that he can easily fix the skylight.

Step 3: Install the skylight

Depending on the skylight size and whether it is prefab or custom-made, the specialist installs the skylight. First, he fixes the frames. Then he waterproofs the skylight and puts the roof tiles back in place. Finally, the specialist installs the glass in the skylight. After this the skylight only needs to be finished on the inside.

Step 4: Finish the inside

The skylight looks perfect on the outside, but needs to be finished on the inside. The professional will plaster and seal holes and crevices and use plasterboard, for example, to make it a tight fit again. Once this is completed, you will start enjoying your new skylight in your home.

Rooflight sizes: Useful tips

Now that you have read all about skylight sizes, here are some more useful tips for getting your skylight installed.

Go for multiple skylights

Are you planning to have multiple skylights installed? Then have this done at the same time. You will save money if the specialist only has to charge one call-out fee. There is also a good chance that the specialist will give you a nice discount for multiple skylights. Don’t have plans to have a skylight installed yourself? Then ask your neighbours if they are interested. The more skylights you have installed in your neighbourhood, the bigger your discount might be.

Choose a safe skylight

Burglars are always looking for ways to enter your home. Although your skylight is not always easy to reach, a burglar will always find a way. Therefore, choose a skylight with the right labels. For example, look for a skylight with the SKG quality mark or the Politie Keurmerk Veilig Wonen quality mark. Then you reduce the chances of burglars getting in through your roof window.

Compare multiple quotes

By requesting multiple quotes, you always choose the best specialist. Whether you go for cheap roof windows or roof windows with luxury extras, by asking for quotations you compare all prices and options. Look, for example, at the cost of materials and labour, but also at the date of execution and call-out charges.

Find the best specialist for your project and get free quotes.

Start