Why choose Avenir Renovations?
Old windows: an often overlooked energy weak point
In many homes in Belgium, windows account for up to 15% of heat loss. Yet, they are still too often neglected during renovations.
Poorly insulating glazing
Old single glazing or non-performing double glazing lets in cold, heat, or noise. This forces you to overheat rooms in winter and makes summer stifling.
Replacing with high-performance glazing allows for better regulation of indoor temperature while reducing heating or cooling needs.
An airtight joinery issue
Damaged wooden frames or aging PVC can have air or water leaks, creating humidity, mold, or thermal bridges.
These defects also lead to a drafty feeling, and over time, can degrade ceilings, floors, or wall coverings.
A loss of daily comfort
Difficult-to-open windows, condensation, drafts in winter, street noise: all signs that a replacement is necessary to regain comfort and tranquility.
Investing in new windows means immediately improving daily life and increasing the property's value.
High-performance and durable window solutions
Avenir Rénovations offers you a complete range of windows, from technical advice to installation, to guarantee you an effective, durable, and aesthetic result.
Why choose Avenir Rénovations for your windows?
Entrusting your windows to Avenir Rénovations means benefiting from comprehensive, technical, and administrative support for a project without unpleasant surprises.
We analyze each room, its use, orientation, frequency of opening, and aesthetic constraints, to propose the right combinations of materials and glazing.
The goal: to optimize both energy performance, acoustic comfort, and natural light in each space.
Our installers ensure perfect air and water tightness, with meticulous finishes. Our installations meet regional requirements and are compatible with PEB audits as part of subsidized renovations.
Each project is planned and monitored to guarantee a durable result, without defects or concerns about tightness.
Replacing windows qualifies for regional grants, subject to minimum performance (Uw values ≤ 1.5 W/m²K, etc.). We assist you with:
- Verification of grant conditions
- Choosing compliant products
- Preparing the complete administrative file
- Contacting accredited auditors if an audit is required
What is the price of a window replacement in Belgium?
| Type of window | Average price including tax (installation included) |
| PVC double glazing window | 500 to 800 € / unit |
| Wood double glazing window | 700 to 1,100 € / unit |
| Aluminum triple glazing window | 1,000 to 1,500 € / unit |
These prices vary depending on the format, glazing, material, and finishes chosen. We always provide a personalized quote after a visit.
FAQ – Windows and insulation in Belgium
Double or triple glazing: what to choose?
High-performance double glazing is sufficient in most cases. It offers a good compromise between performance, price, and comfort. Triple glazing is recommended in rooms highly exposed to the north, noisy urban areas, or for low-energy houses. It is heavier and a bit more expensive, but offers superior acoustic and thermal comfort.
Can I benefit from grants to change my windows?
Yes. In Walloon Region and Brussels, window replacement is subsidized provided that:
- Meet a Uw value ≤ 1.5 W/m²K
- Go through a certified professional installer
- Have completed a prior energy audit (in some cases)
Amounts vary based on your income and the installed surface area. We help you obtain the maximum aid.
Is it possible to install new windows without major work?
Yes. Thanks to renovation installation (on existing frames), it is possible to change your windows without demolishing walls or retouching ceilings. This solution is quick, clean, and allows you to keep the interior reveals. It also reduces overall installation costs.
How long does it take to install new windows?
Expect about:
- 1 day for 2 to 3 windows
- 2 to 3 days for a complete house
The work is done without major construction, without excessive dust, and you can continue to occupy the home during the intervention.
Can I improve ventilation with my new windows?
Yes. Many models include adjustable vents or can be equipped with discreet and effective ventilation grilles. This helps renew indoor air without opening the windows and without compromising insulation.
Let the light in, keep the warmth
Well-chosen, well-installed, and well-insulated windows provide an immediate gain in comfort, aesthetics, and energy performance.
Trust Avenir Rénovations for support from A to Z, with durable materials, careful finishes, and a free estimate included. Transform your openings into real assets for your home.
