Costs of Velux skylight
Costs of installing a skylight 2026
The installation of a skylight costs on average between €850 and €1,850, depending on the size, material, and type of skylight. A professional will create an opening in your sloped roof and mount a high-quality skylight for more daylight and ventilation. In this price guide, you can read about the costs for installing a skylight and what to look out for during purchase.
Table of Contents
- What does it cost to install a skylight?
- Costs of Velux skylight per type
- Factors determining the price of installing a skylight
- Extra costs and surcharges
- How does the professional work when installing a skylight?
- How can you save on installing a skylight?
- Common problems with skylights
- Find the best professional for installing a skylight
- Frequently asked questions about installing a skylight
- Book a professional for installing a skylight
- Useful links
What does it cost to install a skylight?
Installing a skylight costs on average between €850 and €1,800, depending on the size and material of the window. These costs include the professional labour, all necessary materials such as screws and mounting brackets, and 21% VAT. The professional makes an opening in your roof, ensures a watertight connection, and mounts the window according to the manufacturer's instructions.
Velux skylight prices: wooden centre-pivot window
| Type of Velux skylight | Costs |
|---|---|
| Installing small Velux skylight (55x78) | €850 to €1,000 |
| Installing medium Velux skylight (94x98) | €1,050 to €1,150 |
| Installing large Velux skylight (134x140) | €1,250 to €1,550 |
Wooden skylights are the most popular choice due to their natural appearance and good insulation value. The price increases as the window gets larger because larger sizes require more roof construction work and heavier materials.
Velux skylight sizes and prices: plastic centre-pivot window
| Type of Velux skylight | Costs |
|---|---|
| Installing small Velux skylight (55x78) | €900 to €1,050 |
| Installing medium Velux skylight (94x98) | €1,150 to €1,300 |
| Installing large Velux skylight (134x140) | €1,350 to €1,700 |
Plastic skylights are slightly more expensive than wooden variants but require little maintenance and are resistant to moisture. Here too, the larger the skylight, the higher the costs.
Please note: All mentioned prices include 21% VAT, labour, and all necessary installation materials. The exact costs depend on the situation on-site, such as the roof construction and accessibility.
Costs of Velux skylight per type
In addition to the standard centre-pivot window, there is also the top-hung skylight. A centre-pivot window is suitable for roofs with a pitch of more than 55 degrees and is operated at the top. A top-hung skylight is suitable for roofs up to a 55-degree pitch, is operated at the bottom, and can be opened fully outwards. The top-hung window costs more than the standard centre-pivot window because the construction is more complex. The costs for installing a skylight lie between €950 and €1,800, depending on the type and size.
Velux skylight prices: wooden top-hung window
| Type of Velux skylight | Costs |
|---|---|
| Installing small Velux skylight (55x78) | €1,050 to €1,150 |
| Installing medium Velux skylight (94x98) | €950 to €1,050 |
| Installing large Velux skylight (134x140) | €1,500 to €1,700 |
Velux skylight prices: plastic top-hung window
| Type of Velux skylight | Costs |
|---|---|
| Installing small Velux skylight (55x78) | €1,100 to €1,250 |
| Installing medium Velux skylight (94x98) | €1,300 to €1,450 |
| Installing large Velux skylight (134x140) | €1,550 to €1,800 |
Factors determining the price of installing a skylight
The costs for installing a skylight vary significantly per situation. In this section, we explain which factors influence the price and why one job requires more time and material than another.
Size of the skylight
A larger skylight requires more material and labour. With a small skylight (55x78 cm), the opening in the roof is limited, so the professional finishes faster. A large skylight (134x140 cm) requires a larger opening, more sawing time, and extra attention to the roof construction. This increases both material and labour costs.
Material: wood or plastic
Wooden skylights are cheaper to purchase but must be treated with lacquer or stain every five years. Plastic skylights cost more because the material is more expensive, but they save on long-term maintenance work. For damp rooms such as bathrooms, plastic is a logical choice because it is resistant to water vapour.
Type of skylight: centre-pivot or top-hung
A top-hung skylight has a more complex construction than a standard centre-pivot window. It can be opened completely outwards, which requires extra hinges and reinforcements. This technical complexity increases the costs by an average of €100 to €200 per window.
Type of glazing
Standard insulation glass is the most affordable option. HR++ or HR+++ glazing costs more because it has extra layers for thermal insulation. Sun-resistant or sound-absorbing glass requires specialised production, which further increases the price. Better glazing does save on long-term energy costs.
Manual or electric operation
An electric skylight with remote control or app operation costs more than a manually operated window. The electric motor, wiring, and its installation increase the price by an average of €250 to €400. For hard-to-reach skylights, this can be worth the investment.
Interior finishing
A lacquered wooden frame or decorative trim around the skylight on the inside generates extra work. The professional must saw the wood to size, attach it, and finish it. This costs extra time and material, increasing costs by approximately €100.
Window decoration
Roller blinds, shutters, or insect screens are functional additions that must be mounted separately. Each component requires extra installation time and specific mounting materials, which increases the total price.
Urgency versus planned work
If you need someone quickly, the professional must adjust their schedule. They might drop other jobs or come outside regular working hours. This flexibility increases the labour costs by an average of 20% to 30%.
Weekend or weekdays
Work during the weekend costs more because the professional is normally off then. The extra charge for weekend work is between €50 and €100, depending on the agreement.
Complexity of the roof construction
If roof rafters are in the way, they must be adjusted or reinforced. This requires construction work that is not standard. Also, adjusting insulation or electrical facilities around the skylight increases the labour hours and therefore the costs.
Region
In large cities, costs are often higher than in rural areas. This is due to higher business costs, travel time, and parking rates in urban areas. The difference can be up to 15% of the total price.
Accessibility and preparation
If the professional has to search for materials for a long time or clean the workspace first, it costs extra time. Ensure that the attic space is clear and accessible so that the professional can get straight to work. This prevents unnecessary labour costs.
Extra costs and surcharges
The costs for installing a skylight can increase due to additional work that only becomes visible during the task. At Zoofy, you do not pay call-out charges.
- Classic interior finishing: with a decorative trim or lacquered frame costs approximately €100 extra.
- Reinforcement of rafters: in older homes brings additional work, depending on the construction.
- Replacing damaged tiles: around the new skylight entails extra work.
- Extra insulation: around the skylight increases costs but improves energy efficiency.
- Electrical adjustments: for electric skylights is an additional cost.
- Removing an old skylight: before the new one is placed costs extra labour time.
- Urgency: for emergency jobs, a surcharge often applies because the professional must adjust their planning.
- Weekends: work during the weekend is more expensive than on weekdays.
How does the professional work when installing a skylight?
Installing a skylight follows a fixed sequence of steps for a watertight and safe installation.
- Preparation and measuring: The professional marks the exact position of the skylight on the roof and checks the roof construction for load-bearing capacity and obstacles such as rafters. This prevents surprises during sawing.
- Removing roof covering: The roof tiles around the planned opening are carefully removed so that the roof boarding is accessible without damaging surrounding tiles.
- Creating the opening: The professional saws an opening in the roof boarding according to the dimensions of the Velux skylight frame. This step determines the accuracy of the installation.
- Placing and sealing the frame: The frame is leveled and secured with the provided brackets. A lead flashing or sealing foil is applied around the frame to prevent leakage.
- Replacing roof tiles and insulating: The roof tiles are put back and connected to the sealing. The skylight is insulated to prevent cold bridges.
- Interior finish: The inside is finished with a frame or decorative edge as desired. The job takes an average of 4 to 6 hours. Ensure the space under the roof is free of furniture.
How can you save on installing a skylight?
There are several ways to save on the costs of installing a skylight without compromising on quality.
- Replace in time: Have an existing skylight replaced at the first signs of leakage, draughts, or condensation. Delay leads to greater damage to roof construction and insulation, which significantly increases repair costs.
- Prepare the workspace: Remove furniture and ensure good accessibility of the attic space before the professional arrives. This saves labour time and prevents unnecessary costs.
- Plan during the week: Book the job on a weekday and not as an urgent request. Weekend and urgent jobs are on average 20% to 30% more expensive due to higher labour costs.
- Choose wood for a limited budget: Wooden skylights are cheaper to purchase than plastic, resulting in lower costs. They do require regular maintenance with lacquer or stain.
- Consider standard glazing: Standard insulation glass reduces costs, but consider whether the investment in HR+++ earns itself back through lower heating costs.
- Book via Zoofy: You get a fixed rate in advance, without call-out charges and without surprises. You only pay after completion of the job.
Common problems with skylights
Skylights can develop various problems that lead to damage and higher costs over time.
Leakage
Leakage occurs due to outdated or damaged seals, incorrect installation, or blocked drainage channels. You can recognize this by water stains on the ceiling or moisture around the frame. Without intervention, water damage can lead to rot in the roof construction.
Condensation
Excessive condensation indicates insufficient ventilation or poor insulation. This can lead to mould growth and wood rot on the inside, which significantly increases costs if you wait too long.
Draughts and difficult operation
Worn rubbers or dirt in the hinges cause draughts and stiff operation. This increases heating costs and reduces comfort. Timely intervention by a professional prevents small problems from growing into major damage.
Find the best professional for installing a skylight
A skylight must be installed watertight and well-insulated to prevent leaks and cold bridges.
- No call-out charges: You only pay for the actual work, never for the professional's travel.
- Fixed price in advance: You know exactly what the costs are, without surprises afterwards.
- Quick booking without quote hassle: Reserve a professional directly when it suits you, without long waiting times.
- Payment via QR code after completion: You only pay once the job is finished and you are satisfied with the result.
- Reliable, vetted professionals: All affiliated professionals are screened for expertise and experience.
- Carpenter and roofer: For some installations, a carpenter and roofer work together for both watertightness and interior finishing. Through Zoofy, the right professional is matched.
- Transparent prices: The costs for installing a skylight are clear in advance, so you don't encounter hidden costs.
Frequently asked questions about installing a skylight
Do I need a permit for installing a Velux skylight?
In most cases, no permit is required, but for monumental buildings or specific zoning plans, a planning permit may be required. Check this in advance with your local council.
Can a Velux skylight be placed in any type of roof?
Velux skylights are suitable for sloped roofs. The pitch determines which type of skylight (centre-pivot or top-hung) fits best. The professional will assess whether the roof construction is suitable.
How long does it take to install a skylight?
A standard installation takes an average of 4 to 6 hours. In more complex situations, such as reinforcing rafters, this can increase to a full working day.
Do I need to stay home during the installation?
It is advisable to be home for any questions and to keep the workspace accessible. After completion, you pay directly via the QR code.
How do I prevent leakage with a skylight?
Have the skylight installed by an experienced professional with correct sealing. Regularly check the drainage channels and seals and keep them clean.
How long does a Velux skylight last?
A well-maintained Velux skylight lasts 20 to 30 years. Plastic skylights are maintenance-free; wooden windows must be lacquered every five years.
Can I install a skylight myself?
This is strongly discouraged. Incorrect installation leads to leaks and insulation problems. Moreover, the warranty may be voided with self-installation, which could ultimately result in higher costs.
What should I do about condensation on my skylight?
Condensation indicates insufficient ventilation. Ensure good air circulation and consider a window with an integrated ventilation grille.
Can an existing skylight be enlarged?
This is possible but requires adjustment of the roof construction. A professional will assess whether enlargement is feasible and what the additional costs are.
What is the difference between wood and plastic?
Wooden skylights are cheaper but require regular maintenance. Plastic skylights are more expensive to purchase but maintenance-free and ideal for damp rooms.
Book a professional for installing a skylight
Ready to have a skylight installed? At Zoofy, you book a professional directly, without quotes and without call-out charges. You see exactly what it costs beforehand, and Zoofy pairs you with a reliable, vetted professional. You only pay once the work is done.