ᐅ Thermal insulation facade damaged by nails in the exterior wall?

Hello everyone,
Some time ago, we hammered small nails into the exterior facade to hang small decorations. Now, the landlord is accusing us of causing irreparable damage to the house’s thermal insulation facade. It should be added that the landlord has been trying to sell the house for quite a while, and since it would probably be easier to sell if it were unoccupied, he is trying to get us out by any means.
This may now lead to an expert inspecting and assessing whether the installation of these nails actually caused damage to the thermal insulation facade. My common sense tells me this cannot be the case because these are only small nails (about 2cm (0.8 inches) long – see photos).
Could anyone with experience share at what point one would have to assume that driving nails into the exterior facade of a modern house (built in 2017) would truly cause irreparable damage to the thermal insulation facade?

Well, maybe that’s a bit exaggerated. The exterior plaster protects the underlying layers, for example, from moisture. Especially with insulation materials that are not polystyrene/EPS, moisture can be an issue. But who doesn’t attach anything to their ETICS (external thermal insulation composite system) façade? Light fixtures, awnings, mailboxes? Your small nails probably play a minor role, and applying some sealant over the small holes should still be feasible.

But please remember, as a tenant, you must never tamper with the façade! Please avoid doing so in the future, as you could make yourself vulnerable. If the landlord wants to evict you, you would have given them a strong reason to do so.

Thanks for the reply.
It's funny that the landlord installed a gutter right next to our small nails, which, of course, was fastened with much larger nails. He probably didn’t worry about the thermal insulation there :-)

But we have definitely learned our lesson and will leave the facade completely alone from now on.

Well, it’s one thing if the landlord makes changes to their own property. It’s completely different when you do something like that without asking.
The landlord is free to drill into tiles as they please. But you need to ask for permission because it’s a rented property, not yours.

Who says the landlord just nailed up a gutter without sealing or taking any proper measures?

That would be like putting a sticker on your SIXT rental car, claiming it’s fine because SIXT stuck a "DIESEL" label on the fuel cap.
And then getting upset when the owner is angry...

xMisterDx schrieb:

Well, it’s one thing if the landlord does work on their own property. It’s another if you just do it without asking.
The landlord can drill into tiles as much as they want. But you have to ask because it’s a rental, not your property.

Who says the landlord just nailed on a gutter without sealing or any precautions?

That would be like putting a sticker on your SIXT rental car, just because SIXT stuck a "DIESEL" label on the fuel cap.
And then getting upset if the owner gets angry...

I’m not saying it was okay on our part. The question is whether something like this could seriously damage the thermal insulation facade. As far as I can tell, this should be fairly easy to repair (since the nails hardly penetrate the wall). Or do you see it differently?

I can hardly imagine causing serious damage now. But a neighbor recently told me that Danwood only guarantees the facade if no holes are made anywhere. There is a designated spot for the mailbox.