GarMir23
2023-03-26 14:24:40
- #1
Thank you very much for the detailed information!
We are basically aware of that. The plan is a new insulation of the roof (unfortunately, this must be insulated from the outside and will then also be newly roofed) and possibly of the basement ceiling. According to the energy certificate, the house has a final energy consumption of 79.4 kWh/(m²*a) and is thus in the range of class C with a tendency towards B. A few years ago, the windows and doors were replaced with triple glazing. So it doesn't seem to be insulated that badly, does it?
The photo shows the connection of the intermediate ceiling (ground floor/upper floor) to the exterior wall (east side). Am I right in understanding that this is actually caused by wind whistling from outside through the exterior wall and the wall connection? Or is it perhaps rather air circulating between the floors? In the room where the photo was taken, the residents operated a wood-burning stove, by the way. Perhaps that is the cause of the soot?
We are indeed considering having the building fabric inspected in advance. However, a full appraisal is also very expensive, isn’t it? What options do we have?
The floor plans exist, and at least for the basement, there are still detailed specifications regarding the building materials.
The company that built the house still exists today. I have already made contact with their energy consultants. I might also ask again about the phenomenon shown in the photo. What exactly should I ask regarding the construction?
We are aware of the potential problem of contamination by harmful substances. According to the manufacturer’s statement, in their houses from this period, most of the harmful substances have generally already evaporated, so that the indoor air pollution is likely below the recommended limit values. But we have a guarantee from the broker that the indoor air will also be tested once more before purchase.
Furthermore, artificial slate panels are installed on two flanks of the house, which according to the manufacturer are the only components containing asbestos. Since these are on the exterior wall and as far as we know are intact, I don’t think this poses a major problem.
Thanks again very much for the help here. A bad purchase of this magnitude would indeed be fatal.
The prefabricated houses from the 70s are generally of very simple construction and modest build quality. The insulation of the exterior components (roof/top floor ceiling/floor/exterior walls) will be minimal and will hardly meet today's standards. The very simple construction will also be evident in the component connections, which will not be windproof. The conspicuous stripes on the ceiling are - as suspected - the result of such leaks, through which dust is blown in.
We are basically aware of that. The plan is a new insulation of the roof (unfortunately, this must be insulated from the outside and will then also be newly roofed) and possibly of the basement ceiling. According to the energy certificate, the house has a final energy consumption of 79.4 kWh/(m²*a) and is thus in the range of class C with a tendency towards B. A few years ago, the windows and doors were replaced with triple glazing. So it doesn't seem to be insulated that badly, does it?
The photo shows the connection of the intermediate ceiling (ground floor/upper floor) to the exterior wall (east side). Am I right in understanding that this is actually caused by wind whistling from outside through the exterior wall and the wall connection? Or is it perhaps rather air circulating between the floors? In the room where the photo was taken, the residents operated a wood-burning stove, by the way. Perhaps that is the cause of the soot?
You should make your purchase decision only after a prior inspection by a qualified architect and should definitely not rely on the information from the broker/owner. If no verifiable information on the building construction is available, the fundamental quality of the property can at least be sufficiently accurately assessed during the on-site appointment of this purchase consultation. This way, the renovation/modernization effort can be better calculated for you. Prefabricated houses from this era can also still be contaminated with harmful substances that are released into the room air even today. This can also be checked before the purchase by means of an indoor air/dust or material analysis.
We are indeed considering having the building fabric inspected in advance. However, a full appraisal is also very expensive, isn’t it? What options do we have?
The floor plans exist, and at least for the basement, there are still detailed specifications regarding the building materials.
The company that built the house still exists today. I have already made contact with their energy consultants. I might also ask again about the phenomenon shown in the photo. What exactly should I ask regarding the construction?
We are aware of the potential problem of contamination by harmful substances. According to the manufacturer’s statement, in their houses from this period, most of the harmful substances have generally already evaporated, so that the indoor air pollution is likely below the recommended limit values. But we have a guarantee from the broker that the indoor air will also be tested once more before purchase.
Furthermore, artificial slate panels are installed on two flanks of the house, which according to the manufacturer are the only components containing asbestos. Since these are on the exterior wall and as far as we know are intact, I don’t think this poses a major problem.
Thanks again very much for the help here. A bad purchase of this magnitude would indeed be fatal.