Problem and where it occurs (objects)
Interior – soft foams are used for interior insulation.
Exterior – for exterior insulation hard foams with closed cell structure are used (ventilated facades etc.), foil does not have to be used, does not absorb humidity, it is enough to spray half the thickness compared to other materials at the same thermal insulating properties, lambda is 0.021, it stregthens, solution of details, it is sprayed directly on the structure which eliminates the formation of bridges.
Disadvantage - UV protection is necessary.