Hello! The electrician has cut quite a few holes in the vapor barrier for the installation of electrical conduits. The holes are much larger than the actual conduit (slits cut with a knife) and sealing is done with a special tape.
I don’t think the result looks very tight actually. The electrical conduits don't always exit and enter perpendicularly to the vapor barrier, most of the conduits lie parallel to the vapor barrier. Naturally, it's difficult to make it tight and maybe actually even difficult to make it good.
Do you have any tips on methods for making it completely tight around these electrical conduit penetrations? I considered supplementing the tape with foam sealant for a while, but it probably won't adhere to polyethylene plastic.
THANK YOU 
I don’t think the result looks very tight actually. The electrical conduits don't always exit and enter perpendicularly to the vapor barrier, most of the conduits lie parallel to the vapor barrier. Naturally, it's difficult to make it tight and maybe actually even difficult to make it good.
Do you have any tips on methods for making it completely tight around these electrical conduit penetrations? I considered supplementing the tape with foam sealant for a while, but it probably won't adhere to polyethylene plastic.
THANK YOU Cut into pieces that you overlap by 10-20 cm and tape securely with the correct tape. But why is he making holes in the plastic, there's really no reason for it, or is there no "installation space" between the plastic and the surface layer?
@cecar33, thank you for your reply!cecar33 said:
The reason for so many holes might be partly because there is a vaulted ceiling in the middle part of the house. In all transitions from wall to ceiling, holes have also been made. See the picture and you'll understand.
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If only they had thought it through beforehand, it would've been possible to build it in a way that wouldn't require piercing the plastic. I also have "öppet till nock" but can run the electricity from the walls up into the ceiling without any problems.
Yes, I see, but if the inner glesen hadn't been there before the electrical installation, it should be possible to pull the hose without making a hole. But now it is what it is, try to place a piece of plastic between the glesen and the roof canvas and tape it. Always avoid foam sealant as long as possible because it's a damn mess when it expands more than expected, and getting rid of it is not easy. But foam sealant as a material is great if there is no other way.