Thermal insulation: update on new materials

Thermal insulation: update on new materials


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With winter approaching, it's time to (re) think about insulating your interior. In addition to optimized comfort, a properly insulated home can cut your electricity, gas or fuel bill in half! Traditional insulation, from mineral wool to synthetic insulation, has proven itself and is known to everyone; they are however gradually being challenged by the new materials put on the market, with an even more effective insulating power. Update on the insulation of tomorrow.

Opt for high-performance insulation

Good insulation guarantees a pleasant ambient climate. No unhealthy drafts, no condensation on the walls. Poorly insulated walls can cause not only unpleasant and unhealthy mold, but also considerable damage to the building. Faced with traditional insulation is now emerging a new generation of insulation with reduced thickness and optimum thermal conductivity.

They are divided into 3 distinct families

Thin opaque reflective products Thin insulation is a lightweight, thin insulation that ranges from a few millimeters to a few centimeters. It consists of one or more layers of aluminum assembled together and intermediate layers of different types (felt, wadding, foam, etc.). These act as reflectors, that is to say that they reflect thermal radiation and thus prevent heat loss. This type of insulation is commonly used for roof insulation, but can also be used to insulate the roof, floor or walls. Vacuum Insulating Panels (PIV) Very fine, the VIPs contain a nanoporous material (silica powder, airgel) surrounded by a waterproof envelope. The whole is then relieved of its air, like vacuum food, which gives it its strong insulating power. The main shortcomings of the VIP remain its fragility and its high price. In addition to its exceptional thermal capacities, the PIV benefits from a very small thickness: for comparison, 1 cm of PIV is equivalent to 6 cm of expanded polystyrene or 9 cm of mineral wool. Significant space savings for exceptional thermal conductivity! Phase Change Materials (MCP) We call phase change material - or MCP - any material capable of changing physical state as a function of variations in the temperature of the ambient environment, just like ice which turns into water when the zero degree bar is crossed. They are in the form of paraffin wax microbeads encapsulated in polymers. These are incorporated into other materials such as plasterboard, plaster, aerated concrete, etc. The melting temperature is around 22 ° C: as soon as the ambient air reaches this critical temperature, the wax melts and absorbs part of the heat in the room. When the temperature cools, the wax solidifies and releases the energy accumulated in the ambient environment. It is thus possible to reduce the heat peaks by 3 to 4 ° C.