Light-b has good heat insulation capacities and, unlike the common thermalinsulation materials, does not compromise the transpiration of the building. The Light-b structure with communicating microcells allows the water steam, present inside the house, to go outwards, removing by this way the onset of the condensate and the inevitable forming of molds. The transpiration of the walls allows therefore a balance of moisture content, by evacuating by diffusion the water steam inside the house. Particularly suitable in the “wet environments” like bathrooms and kitchens, wellness centers and gyms.