Huge problem with condensation on the window

Hello,

With this tip I’m probably causing trouble with , since it shifts the solution of the problem onto the landlord - but it would be an alternative if nothing changes in the medium term.

No, why?

Assuming the OP follows your advice - do you really believe that the moisture problems will be resolved by move-out next year? Either way, in my opinion the landlord will become aware; even if only through sharply increased heating costs. From my point of view, it is therefore advisable to anticipate his reaction with appropriate remedies

Rhenish regards

So something must be wrong there. If the room temperature is 21°C and the relative humidity is 60%, then according to the dew point table the surface temperature would have to be 12.9°C for condensation to occur. If these were my windows, I would get a surface thermometer (it doesn't cost more than 20 euros) and measure the temperature of the pane. Without this value, no reliable conclusions can be drawn anyway.

As I already wrote - I think that the measures in this period will not bring complete drying. But after half a year, in my opinion, there should be considerably less water on the windows. If that is the case, one can probably conclude that the moisture is actually caused by faulty ventilation/heating behavior and that this will resolve over time with continued consistent ventilating/heating. However, if no improvement has occurred, I would suspect structural defects. Then one should really consider moving.

Something must be wrong there. If the indoor temperature is 21°C and the relative humidity is 60%, then according to the dew point table, the surface temperature would have to be 12.9°C for condensation to occur. If these were my windows, I would get a surface thermometer (costs less than 20 euros) and measure the temperature of the pane. Without this value, no reliable conclusions can be drawn anyway.

Well - the original poster wrote that the building dates from 1965. I have no idea to what extent the housing association has already renovated, but with that construction year, there could possibly still be single-pane windows. That the pane becomes very cold at the current outdoor temperatures should be clear. But this is only speculation.

The panes look like insulated glass in the photo, but that doesn't have to mean much. The insulated glass windows in our old apartment were leaking (water got through the seals) and the gas filling had gone. The water just ran down there as well. However, not in torrents. Such a surface thermometer would certainly bring clarity.

The panes look like insulated glass in the photo, but that doesn't have to mean much. The insulated glass windows in our old apartment were leaky (water got through the seals) and the gas filling had escaped. The water just ran down like that. However, not in torrents. A surface thermometer would certainly bring clarity.

You are right - in such a situation the thermometer can bring clarity. If that is the case, this would also be one of the reasons mentioned above that would justify moving. Because with leaky insulated windows where the gas filling is gone, tenants can ventilate and heat all they want. Well - maybe in half a year we will find out the status or how it turned out.

Yeah, there were a lot of good tips here, so the OP is sure to be busy for now.