Retrofit flush-mounted mailbox into ETICS

Good evening,

our house is finished on the outside and we would like to have a flush-mounted mailbox including a video intercom system installed. The problem (or not a problem) is that the installation now has to be done retrospectively. That means having an opening cut into the facade or [WDVS] with a depth of 10 cm. That would leave 6 cm [WDVS] and 20 cm [KS] remaining (regarding thermal bridging). We know that this is normally done before plastering, but our [BU] was not very accessible in some matters.

Is this still possible or is it advisable against?

Thank you!

Hello Chloe,
I now have exactly the same problem as you. How were you able to solve it?
Best regards

Hello Chloe, I now have exactly the same problem as you. How were you able to solve it? Best regards

We are installing a flush-mounted mailbox with a DoorBird video intercom in May. An electrician will do it (he has installed our model several times before). He said it would not be a problem. Some insulation will remain anyway.

Well, if the electrician says so, then it must be true. He is a recognized expert in [WDVS] and surely knows all the little details that need to be considered. Joint sealing tapes, etc. The mailbox made of metal is also an ideal thermal bridge.

No problem. We have had it for 10 years and no stress with it at all. Installed cleanly and with sealing tape.