ᐅ Blower Door Test Issues?

Created on: 8 Nov 2017 13:36

Hello,
we have just finished the shell and roof of our KFW40+ house.

Now I have mounted the electrical panel on the (unfinished) interior wall and might not have considered the following.

Unfortunately, during the shell construction, we missed applying a smooth plaster layer at the points where the interior walls meet the exterior wall. This would serve as an airtight layer between the exterior wall and the interior wall connection. (Masonry: Poroton)

Now I am wondering how problematic this could be for the blower door test.
Do I need to plaster behind the electrical panel now? Do I also need to install airtight electrical boxes inside the interior walls?

I have absolutely no idea how much pressure loss is acceptable or what impact this might have.

Thanks for any answers!

nightdancer11 Nov 2017 13:48

#13

Schluffi0815 schrieb:

I have no problem with roller shutters (inspection from the outside). I used concrete cable without a conduit, which goes directly into the roller shutter box.

My window installer insisted on using a conduit.

blackm8811 Nov 2017 14:45

#14

Our house has a second layer on the exterior walls, called an installation layer, where all the wiring and, for example, electrical outlets are installed. There are no drafts. We have a KFW 55 house, but in the blower door test the n50 value is 0.53.

Schluffi081511 Nov 2017 18:42

#15

nightdancer schrieb:
My window installer insisted on having an empty conduit.

They just like to keep things simple [emoji16]

Kaspatoo11 Nov 2017 19:49

#16

What can be done if airtight electrical boxes were not used in the exterior walls and everything has already been plastered? Removing them is not an option.

nightdancer11 Nov 2017 19:52

#17

Kaspatoo schrieb:
What can you do if no airtight junction boxes were used in the exterior walls and everything is already plastered? Removing everything is not an option.

Nothing.
Tough luck.

ᐅ Blower Door Test Issues?

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