Crack in plaster above old thermal insulation composite system (ETICS) building from 1971

Hello, we have an old building from 1970. The facade consists of an ETICS with 5 cm and received a new coat of paint in 2014.

Our roof was redone this year, with insulation that is sufficient for the 20 percent subsidy.

I have now noticed cracks in the facade after inspecting our garage. From below, the facade looks perfect, no dirt or anything visible.

Now I have read that if the facade needs to be renovated, it must be renovated according to the currently valid Energy Saving Ordinance, which would never be economical. Since the facade looks perfect from below, I assumed that if at all, we would have to repaint it again in 20 years.

What could happen in the worst case because of the cracks? Could this lead to a renovation case for the entire facade? Or does the long crack, if at all, lead only to a partial renovation of this area?

Is it enough to repair the cracks? Can they be left as they are?

The first two pictures show a long crack. Approximately 0.3 mm wide and 2 meters high. If you press firmly on the plaster, it can apparently be slightly pressed in.

The second picture shows finer, short cracks. These are also only located in the upper part of the facade, but in many places there.

And then there are a few individual cracks, see other pictures.

Do I have to worry that everything will eventually have to be renewed according to the Energy Saving Ordinance? Or are the cracks okay?

I wouldn't do anything there, penetrating water should drain downwards. In 5 years you could repaint the facade, with crack coating, covering cracks up to 2mm.

I wouldn’t do anything there, any penetrating water should drain downwards. In 5 years you could repaint the facade, with crack coating, it covers cracks up to 2mm.

Is the crack in the first picture also harmless? Is it normal for it to run so vertically? I think it’s already about 0.3 mm wide, but I still don’t need to take any action?

I suspect it is the bump of the insulating panels, do nothing, the facade will have been sealed beforehand. Or do you have damp spots or mold stains inside?

I suspect it is the bump of the insulation boards, nothing to do, the facade must have been tight before. Or do you have moisture spots or mold spots inside?

No, everything is fine inside. But there is the thermal insulation composite system underneath. Could it not cause moisture to penetrate in winter and freeze, causing the plaster to burst off?

That I get to experience this - finally someone who holds a scale in the picture! Otherwise, we regularly have to guess what the mega-zoomed pixel snow could even represent...