FAQ

Construction methods

The construction methods and associated materials very much influence the thermal performance of a building and the environmental quality in which it operates.
Excluding certain local circumstances, in France the majority of buildings are made of cinderblock or concrete and are insulated from the inside.

Unfortunately these solutions end up as bad performances and bad thermal carbon assessments.

Outside insulation

Insulating from outside allows us to eliminate a part of the thermal bridges and to use the inertia of the construction material to store the heat or the coolness.

Outside insulation

Thermal bridges

These are the points of contact between the outside and inside of the building through a material more or less conductive so that the coolness or heat from outside can get inside the building and vice versa. By placing the insulation on the outside of the building envelope thermal bridges from the building structure can be avoided.

Thermal bridges

Airtightness

If one wants to achieve a very high energy performance (cf. BBC label and Passive House) this requires not only a very good insulation but also an airtightness of the building.
Indeed, there are numerous possibilities by which the air leaks are going to alter the thermal performances of the building: connecting points of insulation and of the horizontal and vertical walls, the coffering of openings (doors and window) and roller blinds, technical lines and cantilevers …
These issues must be handled very carefully if one wants to optimize the thermal performance of building.

Useful links :

Constructive methods

Frequently asked questions