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Home » Skylight » Replacing a skylight

Replacing a skylight

Would you like to replace your old roof window and are you curious about the costs and possibilities? You can replace your roof window from as little as £ 850. With a new roof window you bring a lot of light into your home and you can choose from many different types. Are you curious about all the possibilities? Read it in this article.

What does a skylight replacement cost?

When replacing a skylight, you have to take into account two types of skylight costs. First of all, you pay for the new skylight and in addition, the specialist also charges for the skylight replacement. The cost of installing a roof window varies if you choose a different size roof window than the one you had before. This is because the specialist then has to make adjustments to the roof. See the overview below for the average costs per type of roof window.

Material Sizes skylight in cm
(width x height)
Average price skylight
(including VAT)
Average price installation
Plastic skylight 55 x 78 £ 600 £ 250 – £ 750
78 x 98 £ 780 £ 250 – £ 750
78 x 118 £ 860 £ 250 – £ 750
Wood skylight 55 x 78 £ 570 £ 250 – £ 750
78 x 98 £ 730 £ 250 – £ 750
78 x 118 £ 800 £ 250 – £ 750

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Skylight replacement

Why should you replace a skylight?

Replacing a skylight costs a bit, but it will give you a lot more. Sometimes you know for sure that you need to replace your skylight, for example if leakage occurs. Yet there are also other reasons why it makes sense to replace your skylight.

Create more light

With a modern skylight, you get plenty of sunlight into your home. Without enough sunlight, you feel tired faster and are more likely to get a bad mood. You’re totally right to replace your skylight in the attic. This is often a dark place, where sunlight is more than welcome. An old skylight is smaller in many cases. In addition, the glass of this skylight is often corroded, so it lets less sunlight through.

Enjoy healthier air

Airing your home improves air quality. On rainy days, this can be tricky with a skylight. Rain easily enters through the roof, so you prefer to leave the skylight closed. If you choose to replace your skylight, this will no longer be a problem. This is because you have the choice of having a skylight with a ventilation grille installed, so you always have a healthy air flow. Adequate ventilation also prevents a home that is too damp.

Lower energy bills

A well-insulated skylight allows much less heat to escape. With double or even triple glazing, you will soon save on your heating costs. In addition, a large skylight lets in plenty of sunshine, which also helps heat your home. So your room stays at a pleasant temperature without you paying much for it. So when you look at the low energy costs, they still end up being cheap skylights.

Types of skylights

When replacing your skylight, you have a number of types of skylights to choose from. These are mainly wooden or plastic roof windows. Check out the different features for each type of roof window below.

Type of skylight Characteristics Average price (including installation and VAT)
Roof window – Rotates 180 degrees on its own axis
– Includes ventilation grille
– Easy to clean
– Suitable on almost all roofs
– Only one way to open

£500 – £1.200
Falling window – Opens via hinges at the top
– Can be opened both inwards and outwards
– Includes ventilation grille
– More difficult to clean
– Not suitable for all roofs
£ 500 – £ 1.200
Balcony skylight – Extra space in the room
– Consists of 2 windows that open themselves into a balcony
– Higher price than other skylights
– Only suitable for rooms with a large roof
£ 1.800 – £4,500
Light dome – Only suitable for a flat roof
– Soundproofing
– Electric opening
£600 – £1.400

Skylight replacement

Step plan skylight replacement

Depending on the type, the specialist replaces the skylight in a number of steps. Wondering how the specialist works? Read about it in the steps below.

Step 1: Remove the old skylight

Before the specialist replaces the skylight, he should first remove the old skylight. He does this by removing the glass and removing the frames. This creates a hole into which the specialist installs the new roof window.

Step 2: Prepare for installation

Would you like to replace the roof window with a larger version? Then the specialist will make extra space, by removing a piece of roof. He will then remove any roof tiles that are still in the way in order to have enough space to install the new skylight.

Step 3: Install the new skylight

When actually installing the new skylight, the specialist first fixes the frames. He then ensures that the frame is watertight and reinserts any tiles or other roofing material. Finally, the specialist installs the pane in the frame and checks whether the skylight opens properly.

Step 4: Finish the skylight

Last of all, the specialist finishes the skylight. When replacing the skylight, that inside of the skylight must also be finished. Using sealant and putty, he seals all holes and cracks. In addition, he also finishes the inside of the roof, so you can start enjoying your new, replaced skylight straight away.

Roof window replacement: useful tips

You have now read all about your skylight replacement. Read these tips to choose the best skylight for your home.

Look for subsidy

Did you know that it is possible to apply for a subsidy for skylight insulation? At the moment, this is only available for owner-occupiers, but it may be possible again for private individuals in the future. Want to know whether a subsidy is also available in your municipality? You can check this via the Energy subsidy guide.

Go for a safe skylight

Windows are often a prey for burglars. It is therefore wise to make your window as burglar-proof as possible. A good way to do this is to choose a window with the Police Quality Mark Safe Living. If a window has this hallmark, you know that it meets certain security requirements. Yet a hallmark alone is not enough. Always stay alert yourself and close your roof window when you leave your house.

Get a volume discount

You will be cheaper if you replace several roof windows in one go. The specialist will then not have to drive twice and will have all the materials on hand. Even if the neighbours are interested, it makes sense to have this done at the same time. This way you save extra money on replacing your skylight.

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