Shortly after we moved in (the painter had left the house for only two weeks!) The mold is in the upper corners of the outer wall in the bedroom. The complaint requires only a partial solution. Although in the false ceiling nachgedämmt the ring beam on the shutter boxes (in this cold penetrates from the outside and forms then a thermal bridge at said inner corners). Further research into the causes but will not run.
Before the painter is called automatically for a second time to the wall to make new, we discover more mildew stains. We decide to commission an expert who advised us to a thermography. The result of thermography is sobering.
The shutter boxes are in many places not adequately insulated, it's the wind blows from the counters of the shutter and the parent-bath, the film is the vapor barrier above the suspended ceiling is not properly connected to the wall mounted. This could be the damage with the mere passage Hand feel on the ceiling lamps.
measures: The ceiling was partially re-opened and the Wall Final (hopefully) properly made. Similarly, the roller shutters were opened again and sealed the cable guides.
then were allowed to bath and bedrooms will be "restored" and start fresh. A final review of the measures of their success is still pending.