Abstract: The invention relates to a moisture-adaptive vapor barrier, in particular for heat insulating buildings. The vapor barrier is produced from a material which has a plateau-shaped Sd-value curve within a range of Sd-values of 2-5 m of diffusion equivalent air layer thickness at a humidity of 45-58%.

Abstract: The present invention relates to a façade system with a translucent porous insulating material of mineral or organic fibers for passive solar energy utilization, the insulating material having on the outside a colored layer (2) for design purposes and for controlling the light transmittance. The façade system is formed from a multiplicity of preferably factory-prefabricated façade insulating boards (1). The colored layer (2) can, moreover, be designed in such a way that it protrudes beyond the insulating layer along two board edges (3, 4). Consequently, when the façade insulating boards (1) are applied to the building wall, the abutting edges in the region of the joins between neighboring insulating boards are covered by the overlapping protruding colored layer (2).