Hello dear forum,
We are building a prefabricated house with a ventilation system. Today we had our blower door test, and the result was n50=1.13. The site manager said this is within the standard (max. 1.5). Regarding the conditions:
The building envelope is in place, but the skirt is still missing—that is, the material that is attached to the base slab.
What do you think about this value? As the homeowner, do I have the option to request an improvement in the result?
Thanks and best regards
We are building a prefabricated house with a ventilation system. Today we had our blower door test, and the result was n50=1.13. The site manager said this is within the standard (max. 1.5). Regarding the conditions:
The building envelope is in place, but the skirt is still missing—that is, the material that is attached to the base slab.
What do you think about this value? As the homeowner, do I have the option to request an improvement in the result?
Thanks and best regards
B
boxandroof1 Feb 2019 09:50Silent802 schrieb:
Thank you for the answers.
The team checked every room during the blower door test and inspected all corners. Their statement was that everything is airtight.
They suspect that it could be caused either by the apron or the chimney?!
Would you be worried about the measured value?If that is correct, that it is caused by the chimney and the apron, and you were present during the test, I wouldn’t worry. Otherwise, seal the chimney and test again.
H
HilfeHilfe1 Feb 2019 12:25What standard did you pay for? Is it a high-priced house anyway?
S
Silent8021 Feb 2019 13:16HilfeHilfe schrieb:
What standard did you pay for? Is it an expensive house anyway?What exactly do you mean?
Energy Saving Regulation with Ventilation System or Passive House.
With the Energy Saving Regulation and a ventilation system, the value is not particularly good, but it meets the standard and you won’t be allowed to make many changes.
With the Passive House standard, you have failed and rework is required.
With the Energy Saving Regulation and a ventilation system, the value is not particularly good, but it meets the standard and you won’t be allowed to make many changes.
With the Passive House standard, you have failed and rework is required.
S
Silent8021 Feb 2019 14:25Yes, KfW 40 with a ventilation system. Yes, exactly, not good... I have to be able to do something to improve the value, right?!
I have considered hiring an engineer from the city to look for additional leaks…
I have considered hiring an engineer from the city to look for additional leaks…
We were just under 0.4. Solid house with a ventilation system, no special measures. The ventilation system is only for comfort reasons. But the window installer knows how to do a proper RAL installation, etc. – then it will be appropriately airtight.
I don’t want to dig into the standards now, but Google tells me that the maximum value would be 1.0 for new buildings with mechanical ventilation systems!?
I don’t want to dig into the standards now, but Google tells me that the maximum value would be 1.0 for new buildings with mechanical ventilation systems!?
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