Want to have a roof window installed? Professional installation guaranteed
Are you considering adding more natural light and fresh air to your home? Then installing a roof window is a smart investment. A well-installed roof window brings more light, comfort and value to any room.
De Dakvensterinstallateur is your reliable specialist for everything related to installing a roof window, including professional installation and professional advice.
Whether you want a new roof window, replace an old one or need maintenance – we will take care of it without any hassle.



Types of skylights that you can have installed
There are different types of roof windows to choose from, depending on your needs, your roof type and the purpose of the space. We install, among other things:
- Rotating roof window:
A pivoting roof window opens by rotating around a pivot axis in the centre of the window. This makes it ideal for bedrooms or lofts. It provides both extra light and easy ventilation, perfect for roof pitches between 15° and 90°. - Fixed roof window:
This window cannot be opened, but provides an abundance of natural light. It has ventilation flaps to regulate the air supply. Ideal if you want to bring more light into a room without the need for ventilation. - Balcony roof window:
This unique roof window opens in two parts. The upper sash works as a top hung window, while the lower sash folds forward to create a mini balcony. Perfect for those who want to integrate both extra daylight and a balcony into their loft space. - Skylight with facade element:
A roof window with a facade element elbow window consists of two glass elements, one of which is placed vertically in the facade and the other in the sloping roof. This type of window is ideal for making optimum use of the space under a sloping roof and provides a luxurious appearance.
We take care of the complete roof window installation — from a simple small roof window to a large VELUX window with additional options such as sun blinds or insect screens.
How does installing a skylight proceed?

At De Dakvensterinstallateur you are assured of a safe, efficient and neat execution of the work. Installing a roof window is done in the following steps:
- Customized advice: We look at your roof, the possibilities and give you personal advice about the right type of roof window.
- Preparation: We provide exact measurements, choice of materials and a clear quotation.
- Making a skylight: We make the opening in the roof with minimal disruption to your home.
- Installing a roof window: The roof window is professionally and waterproofly installed using the correct flashing and sealing materials.
- Finishing: Interior finishing such as carpentry or connecting window decoration is taken care of if desired.
Whether you are having a Velux roof window installed in an existing home or a new roof window installed during renovation or new construction: we guarantee a result that is technically and aesthetically perfect.
Installing a VELUX roof window: why choose top quality?
VELUX is the standard when it comes to quality, innovation and reliability in the field of roof windows. Installing a VELUX roof window means choosing comfort, durability and a stylish result. Thanks to our experience as a certified VELUX installer, you are assured of a professional Velux installation according to the manufacturer's guidelines.
We provide both a standard Velux roof window including installation and custom solutions for larger projects. You can contact us for:
- VELUX installation for renovation projects
- Installing Velux in new construction
- Installing a Velux window including finishing
- Replacing and renewing existing windows
- Complete installation of VELUX roof window with finishing inside and outside
Do you want to install a velux window but don't know which type suits your situation best? Let our experts advise you on the most suitable solution.
Roof window including installation: carefree and efficient
A roof window including installation means that you don't have to worry about anything. We take care of everything: measuring, material, delivery, roof window installation, finishing and cleaning up. Whether it's installing a single VELUX window or having multiple loft windows installed, we deliver professional work.
How much does it cost to have a skylight installed?
The cost of installing a roof window can vary depending on several factors. Here are the main aspects that affect the price:
Type of roof window: The cost varies depending on the length of the type
Format: Larger windows are more expensive than smaller models.
Roof pitch: The slope of the roof can affect installation costs, as steeper roofs often require more work.
Accessibility of the roof: Is your roof easily accessible? Then the costs can be lower. For example, scaffolding has to be placed, then this can increase the price.
We always offer a free, customized quote, so that you know exactly what the costs are for your specific situation. At De Dakvensterinstallateur you get a transparent price without surprises.

Why choose De Dakvensterinstallateur?
We are the specialist in installing roof windows and VELUX windows in Belgium. Customers choose us because:
- Certified VELUX roof window installer
- Quickly available for any project, large or small
- Clear communication and transparent prices
- Years of experience with VELUX roof window installation
- Warranty on materials and installation of Velux roof windows
Our mission: to make your home more comfortable with more daylight, better ventilation and a perfectly finished result. Whether you have a small roof window installed or a large tilt window, we ensure that it is right down to the last detail.
Frequently Asked Questions
Can I install a skylight myself?
Although it is technically possible to install a roof window yourself, we recommend hiring a specialist. An error in the installation can lead to leaks or insulation problems, which is more expensive in the long run. Hiring an expert ensures that everything is done correctly and safely.
How do I know which type of roof window I need?
The choice of the right roof window depends on the type of roof (sloping or flat), the space you want to illuminate and your personal preferences. We are happy to advise you on the best choice for your situation.
How long does a VELUX roof window last?
VELUX roof windows are known for their durability. With the right maintenance, a VELUX roof window can last up to 30 years or more. We advise you on the maintenance and, if necessary, replacing parts to extend the life of your roof window.
What happens if the skylight leaks?
A properly installed roof window should be watertight. If you experience any problems with leaks, contact us immediately. We will perform a quick inspection and fix the problem at no extra cost if it is within the warranty period.