To make your home greener, you currently have the option of choosing from many insulation systems. A good solution should allow you not only to comply with the rules in force in terms of thermal regulations (RT 2020, BEPOS and others), but also to achieve real energy savings.
However, how to make the right choice when you know that the isolation devices (thermal conduction, convection and radiation) each have their specificities and can be adapted to all needs (new construction and renovation works)? In this article we have looked into… the question by responding to the major problem concerning the choice of technique to adopt.
ITE (thermal insulation from the outside)
The ITE is the most suitable approach if your home is made up of several levels with intermediate concrete slabs or if you plan to completely redo the facades of the house as part of your renovation project.
This method will allow you to remove all the existing thermal bridges, but also to improve the tightness of the structure and the thermal inertia of the walls, without reducing the living area. In addition, since the installation of the insulation will be done from the outside, the comfort inside the dwelling will be preserved throughout the installation work.
Because of its effectiveness and ease of implementation, exterior wall insulation is the most commonly used technique for the thermal rehabilitation of buildings. Different types of ecological insulation can be used. Depending on the case, you can opt for:
- Insulation with expanded cork panels to be coated
- Insulation with rigid wood fiber panels to be coated
- Insulation with wood fiber under cladding
- Insulation with hemp bricks
- Insulation with Multipor bricks (cellular concrete)
Whichever method you use, experts recommend always checking walls for signs of dampness before installing supports. A sealing treatment around the joinery may also be necessary to prevent water from penetrating into the insulation. In addition, professionals also recommend installing a good ventilation system to optimize insulation.
ITI (interior wall insulation)
The ITI is an inexpensive method and allows more targeted insulation (room by room). However, its performance can vary widely depending on the type of insulation adopted.
In general, the insulation of the walls from the inside guarantees a rapid rise in temperature (little inertia). This is why it is a good option for creating low-energy buildings and homes. However, since it is done from the inside, the approach will have the effect of reducing the habitable space. The facade, however, will be retained.
Among the most used ITI techniques, you have:
- Insulation of interior walls with panels to be coated
- Insulation of interior walls with added framework
- Insulation of interior walls with blown or projected insulation
- Insulation of interior walls with masonry partitions