Insulation, a smart choice
Why insulate?
Insulating your home is an important and highly recommended choice. When you insulate, you save money by consuming less, you have a greater comfort because the heat remains and it is an ecological step.
Wall insulation
The insulation of hollow walls is done by filling the empty spaces with insulators. You can insulate your walls during renovations or new constructions.
Renovating to insulate
Several techniques can be used to insulate your walls. Non-damaging methods exist to fill cavities with foam insulation injected through small holes. This way, demolition is avoided and work is kept to a minimum.
Insulating well during construction
Walls are better insulated in new constructions, being in the center of modern concerns, it is taken into account. The interior and exterior insulation is carried out.

Roof insulation from the inside
The implementation depends on the type of roof. However, insulation from the inside allows to avoid heavy work without touching the roof covering.
- Sloped roof :
The insulation is placed between the roof rafters. - Flat roof :
Insulation is placed under the roof structure.
Roof insulation from the outside
When repairing your roof, don’t forget to insulate it. Although it requires more work, insulating from the outside allows you to keep the interior space.
- Pitched Roof:
Replacing the old roof with insulation panels. - Flat roof :
Protective layer, against humidity and temperature variations, added on top of the roof (warm roof).

Insulation premium
In Brussels, there are premiums for insulation. There are bonuses for each stage:
- Study and audit premium
- Insulation and ventilation premium
- Heat bonus
The premium that interests us is the one for insulation and ventilation. They offer a great contribution to the renovation budget and are available via the following link:
https://environnement.brussels/thematiques/batiment-et-energie/primes-et-incitants/les-primes-energie-2021/primes-b-isolation-et .