Hello everyone,
I urgently need some advice.
We have a house that we bought in 2019 and partially renovated. All the windows are new with double glazing, and we installed underfloor heating.
In recent years, we have already experienced high indoor humidity levels, up to about 65% in winter.
This year, we even had high humidity of 55-65% in all rooms during the summer, and ventilating did not help. Now, in autumn, the humidity is rising above 70%, and we are gradually becoming unsure of what to do.
I measured the walls in all rooms with a moisture meter. The north-facing wall shows about 16% moisture in the corners. The interior walls have about 12%. However, there are no walls that are visibly wet. The roof and walls are also tight.
We regularly air the rooms by cross-ventilation, morning and evening, and now have a dehumidifier running in the bedroom. Still, mold is beginning to grow.
The north basement wall is also damp, but there is roofing felt between the stones, so I don’t think the moisture is rising from below.
Additionally, last year I insulated the basement corner with EPS insulation boards.
I believe I have covered all relevant details.
Does anyone have any idea what I might be doing wrong or where I should look next?
Best regards,
andre007
I urgently need some advice.
We have a house that we bought in 2019 and partially renovated. All the windows are new with double glazing, and we installed underfloor heating.
In recent years, we have already experienced high indoor humidity levels, up to about 65% in winter.
This year, we even had high humidity of 55-65% in all rooms during the summer, and ventilating did not help. Now, in autumn, the humidity is rising above 70%, and we are gradually becoming unsure of what to do.
I measured the walls in all rooms with a moisture meter. The north-facing wall shows about 16% moisture in the corners. The interior walls have about 12%. However, there are no walls that are visibly wet. The roof and walls are also tight.
We regularly air the rooms by cross-ventilation, morning and evening, and now have a dehumidifier running in the bedroom. Still, mold is beginning to grow.
The north basement wall is also damp, but there is roofing felt between the stones, so I don’t think the moisture is rising from below.
Additionally, last year I insulated the basement corner with EPS insulation boards.
I believe I have covered all relevant details.
Does anyone have any idea what I might be doing wrong or where I should look next?
Best regards,
andre007
KarstenausNRW schrieb:
Do you feel confident enough to insulate the exterior of the house yourself (with friends or possibly through classified ads)? Then you could do it for a "pittance." The materials for a KfW55 envelope will be well under 10,000€ (about $11,000). Insulation, adhesive, anchors, mineral-based plaster, mineral paint, reveals, aluminum window sills. I am confident I can apply the insulation to the facade and then cover it, as I have done a lot of work by myself here. The problem is that our roof doesn’t have sufficient overhang everywhere, so the insulation on top wouldn’t be protected. Otherwise, I would have already done it.
K
KarstenausNRW6 Nov 2023 11:49andre007 schrieb:
I feel confident installing the insulation on the exterior wall and then cladding it, as I have done many things on my own here. The problem is that our roof doesn’t have eaves all around, so the insulation at the top won’t be protected. Otherwise, I would have done it already. How frustrating. So there’s no 12cm (5 inches) eaves on the gable ends (1960s house?). This means it will be more complicated to create the necessary overhang.
KarstenausNRW schrieb:
How annoying. So no 12cm (5 inches) overhang on the gable sides (1960s house?). That makes creating the overhang more complicated. The house was built in ’64. On most sides, there is no overhang at all. Quite unfortunate, unfortunately.
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