FIELD: construction.
SUBSTANCE: an insulated building structure is represented and described, in particular an insulated structure of building roof and/or wall comprising at least one heat insulating layer. On the outside of the heat-insulating layer and on the inner side of the heat-insulating layer facing the interior of the building, at least one moisture-exchange protective layer for the heat-insulating layer is provided. The protective layers respectively have an environment moisture-dependent air ayer thickness Sd equivalent to the diffusion of water vapor. According to the invention, it is provided that equivalent diffusion of water vapor of air layer thickness Sd of both protective layers in the range of relative humidity from 0% to 25% and/or in the range of relative humidity from 80% to 100% differ from each other by less than 20%, preferably less than 10%.
EFFECT: invention allows to reduce energy losses through roofs and walls of buildings.
15 cl, 4 dwg, 6 tbl
