Why choose Avenir Renovations?
Why replace or install a Velux as part of an energy renovation?
In many older homes, attics or mansard floors suffer from a lack of natural light and inadequate insulation, especially at the roof level.
Uncontrolled heat loss
A poorly insulated or poorly installed Velux can lead to significant thermal losses. It also allows moisture or drafts to enter if it is damaged or poorly sealed.
Replacing it with a modern model can significantly enhance air and water tightness while limiting thermal bridges at the roof level.
Degraded visual and thermal comfort
The absence of natural light forces you to turn on lamps during the day, whereas a well-oriented Velux can illuminate an entire room. In hot weather, an old model can cause overheating if it does not have suitable glazing.
Recent models incorporate solar control glazing, which allows light to pass through while limiting excessive heat gain.
Difficult or impractical access
Recent Velux models are designed to be easy to open, maintain, and secure, with motorized options and remote control.
This improves daily comfort, especially in hard-to-reach rooms (high ceilings, mezzanines...).
High-performance roof windows for every project
Avenir Rénovations helps you choose the right Velux according to your roof configuration, your usage, and your budget, while ensuring impeccable installation that complies with PEB standards.
Why call on Avenir Rénovations for your Velux?
Installing or replacing a Velux requires technical expertise and perfect mastery of waterproofing and roofing insulation.
We assess:
- The roof slope
- The available interior space
- The solar orientation
- The needs for ventilation or blackout
This allows us to propose the most suitable model and ensure a harmonious integration into the architecture of the home.
Our teams operate in compliance with waterproofing, peripheral insulation, and roof safety regulations. We guarantee a leak-free installation with meticulous finishes and a perfectly functional opening.
We work on both tile and slate roofs, ensuring the implementation of specific connections according to the materials.
Insulation of attics, roof replacement, ventilation, or painting: we can integrate the installation of Velux into a comprehensive energy renovation project.
This allows for optimizing the overall budget, limiting successive interventions, and ensuring technical coherence throughout the site.
How much does a Velux installation cost in Belgium?
| Type of Velux roof window | Average price including VAT (installation included) |
| Rotating Velux (standard) | 700 to 1,200 € |
| Projection Velux | 1,000 to 1,500 € |
| Motorized Velux (electric or solar) | 1,500 to 2,500 € |
The price depends on the type of opening, glazing, dimensions, and chosen accessories. Assistance may be deducted if the intervention is part of an energy project.
Options and accessories
Complementary equipment ensures comfort, aesthetics, and performance:
- Glazing: standard, comfort, all-season, or triple glazing
- Interior blinds: blackout, filtering, Venetian
- Exterior protection: sunshade, screen blind, motorized roller shutter (solar compatible)
- Smart sensors: rain detection, automatic control based on temperature
These elements allow you to adapt your Velux to each season and use.
FAQ – Velux and energy performance
Is the Velux compatible with a low-energy house?
Yes, provided you choose a suitable model. Modern Velux are available with triple glazing, enhanced insulation, and anti-overheating treatment.
They are certified for air and water tightness and can integrate a roller shutter to optimize thermal comfort. They thus fully contribute to an efficient energy strategy.
Can I replace an old Velux without touching my roof?
Yes. If the dimensions remain the same, the replacement is quick, clean, and does not require major work. It is a common intervention during attic renovations or roof maintenance.
The installation is done from the inside and is completed in half a day in most cases.
Are there grants for the installation of Velux?
Yes, in certain situations. If the replacement is part of a global insulation improvement or an energy audit, you may benefit from regional aid.
Especially if the glazing achieves a performance of Uw ≤ 1.5 W/m²K and the installation is carried out by an approved contractor.
Avenir Rénovations guides you in the preparation of the application.
How to avoid overheating in summer with a Velux?
There are several options:
- Choose "all-season" glazing with UV filter
- Install an exterior blind or roller shutter to block radiation
- Ensure good natural or motorized ventilation
These elements allow you to enjoy light without heat, even in the height of summer.
Give style and light to your interior
A well-chosen and well-installed Velux transforms a dark room into a bright, healthy, and pleasant space.
Trust your project to Avenir Rénovations for a reliable, aesthetic installation that is perfectly integrated into your energy renovation.
Contact us for a free study and a personalized quote.
