Seal in outer wall

[Durus]

I am in the process of installing a central vacuum system and have reached the stage where a pipe from the vacuum needs to go out through the house. Making a hole in the outer wall is not a problem, but how should I seal that hole? I'm mostly thinking about the ånspärr.

 

[klaskarlsson]

It probably depends a bit on the house construction.
But if it is a plastic vapor barrier, isn't it common to tape penetrations against the plastic?

/K

 

[Durus]

Well, it would be easy if there wasn't OSB and plasterboard on the wall.

It's a wooden house with two-layer insulation. Plasterboard/OSB/insulation/vapor barrier/insulation/roofing felt/wood paneling