Insulator ITR uses the principle of the thermo-reflexion. The thermo-reflexion is the capacity to return heat or the cold with the state of ondes.Le sun, for example, is propagated thanks to the electromagnetic waves, commonly called "thermal radiation". According to surface met, the waves will be absorbed or reflected (diagrams opposite). Contrary to the thick insulators which act by absorption, insulators ITR� return these waves and intervene like a barrier against heat and the cold. The more the radiation is reflected, the less there is thermal transfer. With more than 88 % of reflectivity, aluminium is one of best insulators thermo-reflective. ITR, of the guarantees of effectiveness and performances Thermal and acoustic insulation maximum constant in time winter like summer. Inalterable and imputrescible. Resisting water and dust. Nonharmful, not irritant, nonallergic Profit of spaces and volumes. Take part in energy saving and contributes to the protection of the layer of ozone Pose on new roof or restoration, wall and roof Easy and fast installation.