MOISTURE-VARIABLE PROTECTIVE LAYER AND USE OF A MOISTURE-VARIABLE PROTECTIVE LAYER

摘要

A moisture-variable protective layer (9) is shown and described, to be used in particular for protecting a heat insulating layer (11) in insulated building structures (1), such as roof and/or wall structures of a building, which has a water-vapour-diffusion-dependent air layer thickness Sd that is dependent on the ambient humidity, wherein the protective layer (9) at least partly consists of and/or comprises a material that has a water-vapour-diffusion-equivalent air layer thickness Sd of greater than 10 m when there is a relative humidity of the atmosphere surrounding the protective layer (9) in the range from 0% to 25% and has a water-vapour-diffusion-equivalent air layer thickness Sd of less than 0.4 m when there is a relative humidity of the atmosphere surrounding the protective layer (9) in the range from 90% to 100%.