Hello, we are having a house built: a KfW 40 wooden frame house without a ventilation system.
Today I received the results from the blower door test.
Result: 1.7
With two indications of air leakage points
Due to the construction, all inspection openings of the roller shutters are not airtight.
And there is a hole in the vapor barrier membrane of the ceiling between floors, which could cause moisture issues in the insulation layer.
The test is passed—do I have to accept it this way?
I am a complete beginner and appreciate any advice.
Today I received the results from the blower door test.
Result: 1.7
With two indications of air leakage points
Due to the construction, all inspection openings of the roller shutters are not airtight.
And there is a hole in the vapor barrier membrane of the ceiling between floors, which could cause moisture issues in the insulation layer.
The test is passed—do I have to accept it this way?
I am a complete beginner and appreciate any advice.
A
Adunoh198317 Dec 2019 20:25Lumpi_LE schrieb:
A bit too weak for a 40 cm (16 inches) wooden house... Definitely need to redo it...OK, I will probably have to cover the costs myself for a second test...
But I will do it.
Tina mit K17 Dec 2019 20:25I would also have the defects repaired. We have a prefab house (timber frame construction) without controlled mechanical ventilation, instead relying on window frame ventilation and shutters, and our value is 0.74. Inside, everything had already been plastered and so on.
Adunoh1983 schrieb:
The photos show the holes where the electrical cables come out of the ceiling for lamps or spotlights.
But those need to be sealed off afterwards, right?There are collars for that. Even if you don’t want to spend 10€ on them, you can simply use a lot of special tape designed for vapor barriers and seal the cables that way. I’m attaching a photo.I can’t say anything about removing them. On one hand, the test has been passed, but in my opinion, this is not professionally done if I understood everything correctly. I remember how much they taped up in our case. I think here you can really say – more is better.
N
nominator18 Dec 2019 19:26From what value is the BDT considered passed?
Our house with controlled residential ventilation had a value of 0.67 despite a cat flap in the wall – to me, 1.7 would have seemed like a disaster.
Our house with controlled residential ventilation had a value of 0.67 despite a cat flap in the wall – to me, 1.7 would have seemed like a disaster.
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