Hello,
Today, as the final trade in our already occupied house, we had the airtightness test.
The result: N 50 = 0.68
We built a solid KfW 70 (2017) standard house. What does this mean? Is this good, acceptable, or rather mediocre?
Should we expect particularly harmful leaks? The tester detected a slight leakage at a sliding door but considered it within acceptable limits, which brings us back to the original question.
Today, as the final trade in our already occupied house, we had the airtightness test.
The result: N 50 = 0.68
We built a solid KfW 70 (2017) standard house. What does this mean? Is this good, acceptable, or rather mediocre?
Should we expect particularly harmful leaks? The tester detected a slight leakage at a sliding door but considered it within acceptable limits, which brings us back to the original question.
haydee schrieb:
It is common to conduct the test shortly before handover. Our first test would not have been accepted by the KfW. We need to achieve better than 0.6. That is why the first test was done as early as possible.
The second test for the KfW was carried out only after moving in and replacing the faulty windows.
Not much has changed. Test 1: 0.42, Test 2: 0.35I haven’t followed your topic closely... what was the issue with the windows?
Did the first test indicate that something was wrong with them?
Normal is a test
Most companies pass the test on the first try. The only question is whether they achieve an excellent 0.6 or a poor 1.3.
We had two tests since it is a passive house and completely different values need to be met.
1 x the one that makes sense for the construction process
1 x the one required by the KFW
Most companies pass the test on the first try. The only question is whether they achieve an excellent 0.6 or a poor 1.3.
We had two tests since it is a passive house and completely different values need to be met.
1 x the one that makes sense for the construction process
1 x the one required by the KFW
Alex85 schrieb:
It is also possible to apply for exemptions if cost-effectiveness is not given, etc.Are there proven cases where that is not the case?
For example, someone who, in a specific situation, consciously chose a KFW house based on cost considerations because the additional effort or higher costs pay off after 10 years?
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