Why choose Avenir Renovations?
Why insulating your home is essential today
The insulation of a building plays a central role in its energy consumption and comfort level, both in summer and winter. In a poorly insulated house, up to 60% of heat loss comes from the building's envelope.
Costly heat loss
Without effective insulation, heat escapes through the roof, walls, windows, and floors. This forces the heating system to run longer, significantly increasing bills.
Insulating means consuming less to heat as much. During harsh winter or transitional periods, the savings can be substantial.
Insufficient thermal and acoustic comfort
Cold walls, drafts, or external noise are common in older homes. Proper insulation stabilizes indoor temperature and improves acoustic comfort.
This results in a feeling of well-being, better sleep quality, and a reduction in noise disturbances, especially in urban areas.
A poor energy performance score that penalizes property value
A house with a low energy performance rating sells for less or not as well. Conversely, compliant insulation improves the energy class and increases the property's attractiveness on the market.
This is also an increasingly important criterion for buyers, landlords, or tenants looking for efficient and low-energy homes.
Our insulation solutions tailored to every configuration
Depending on the structure of your home and your goals, various insulation techniques can be considered. We work on the entire building envelope.
Why choose Avenir Rénovations for your insulation work?
Insulating is not just about adding a material: it’s about thinking of each wall as a system, coordinating the work, and ensuring the durability of the whole.
We start by analyzing your home: roof, facades, floors, ventilation. This global approach allows us to prioritize the most cost-effective interventions and avoid duplicates or technical errors.
The goal is to build a coherent renovation plan, phased and eligible for grants.
We select insulators:
- With high thermal performance (low λ values, high R resistances)
- Suitable for each use (walls, attics, floors, pitched or flat roofs)
- Compliant with PEB requirements
We can also offer bio-based solutions (wood wool, hemp, cotton…) for low environmental impact projects.
Insulation is one of the most subsidized areas in Wallonia and Brussels. We assist you with:
- Obtaining regional grants
- Checking technical conditions
- Preparing the file with the approved auditor
This support maximizes your chances of obtaining the highest amounts and simplifies the entire administrative procedure.
What is the cost of high-performance insulation in Belgium?
| Type of insulation | Average price including tax / m² or unit |
| Roof (interior) | 40 to 70 € |
| Roof (exterior - sarking) | 80 to 130 € |
| Walls from the outside (ITE) | 100 to 150 € |
| Walls from the inside | 60 to 90 € |
| Floors or ground floors | 50 to 100 € |
| Double or triple glazing frames | 500 to 1,000 € / unit |
Prices vary depending on the area, materials, configuration of your home, and access complexity.
FAQ – everything you need to know about insulation work
What are the priorities if I need to insulate in stages?
We recommend prioritizing:
- The roof (most exposed area)
- The walls (large surface area)
- The frames and glazing
- The floors
This hierarchy also depends on the condition of the building. We conduct a comprehensive analysis to help you define a step-by-step renovation plan that is coherent and effective.
Can I benefit from grants for all types of insulation?
Yes, provided that:
- The materials meet a minimum performance (R or U values)
- The work is carried out by a certified professional
- You have a prior energy audit (often required for maximum grants)
We assist you in the choice of materials, the audit, the preparation of the administrative file, and grant applications.
Is it possible to insulate without losing space inside?
Yes. Some techniques like external insulation (ITE) allow you to preserve interior space while significantly improving performance. If this is not feasible, we also offer high-density thin insulators that limit the impact on usable space.
How long do insulation works take?
In general:
- Roof: 3 to 7 days
- Walls externally: 1 to 2 weeks
- Floors: 2 to 4 days
- Frames: 1 to 3 days depending on the number of windows
We establish a detailed and optimized schedule to minimize disruptions and ensure a well-managed site.
Invest in your comfort and your future
A successful insulation means a more pleasant home, visible savings, and a true enhancement of your property.
Trust Avenir Rénovations for efficient insulation work, eligible for aid, and perfectly integrated into your home. Contact us for a free and personalized study.
