Mineral plaster on the house not straight, but bulging

Hello everyone,
we are getting a mineral plaster on the house (structure: ETICS) and yesterday the plaster was applied (the day before the reinforcement) and before that corner protection strips were installed on doors and windows.
Yesterday, just for fun, we placed a batten horizontally on the plaster. Support points were, for example, the corner protection strips between two windows.
We noticed that the plaster is not even but bulging, meaning the plaster is not flush with the batten but here and there about 1 - 2 cm or more is missing.

So the question is how it is with you? Is that normal? Is there a tolerance range? I don’t know, maybe another layer will be applied today, but I can’t imagine that?!?

With the naked eye you wouldn’t see it, but now that we know...

Hi everyone,
we are getting a mineral plaster on the house (construction: ETICS) and yesterday the plaster was applied (the reinforcement the day before) and before that corner protection rails were installed on doors and windows.

Actually, the reinforcement layer should dry completely first, depending on the weather and layer thickness about 3 days.
Before plastering, a plaster primer still needs to be applied.

Yesterday we just, actually for fun, placed a batten horizontally on the plaster. Bearing points were e.g. the corner protection rails between two windows.
We noticed that the plaster is not straight but bulging, meaning that the plaster is not flush with the batten here and there but definitely about 1 - 2 cm or more is missing.

Instead of a batten, use a straightedge or a long spirit level.

So the question is how it is with you? Is that normal? Is there a tolerance range? I don’t know, maybe another layer will come today, but I can’t imagine that?!?

With the naked eye you wouldn’t see it, but now that you know...

Certain tolerances are normal on construction sites.
The unevenness mostly only becomes noticeable when the wall is lit from the side. For example, if you want to install lights on the roof overhang, the wall might not look so nice in the evening.

As everywhere, the preparatory work before plastering is important.
To reduce irregularities from the start, it is advisable to order ETICS panels with tongue and groove.
After bonding, fill all joints with construction foam.
Then sand down all bulges with, for example, a 2m spirit level and a sanding board.
Then apply the reinforcement layer, remove excess material with a notched trowel, embed the mesh (pay attention to overlap, minimum 10 cm),
and now very important first smooth out the dents with a plasterer's sponge float and only then smooth with a trowel.

If the wall was properly prepped, not much can go wrong during plastering.
Apply plaster with any grain size, remove excess material with a notched trowel, smooth with a plastic or rubbing trowel.

And don’t forget to paint.

Thank you for your detailed response on the execution, but unfortunately, it doesn't help me much...

The reinforcement + plaster is already on it and is supposed to be painted next week. The question is

a) is this normal (I rather think not)
b) are there tolerances (up to 1 cm is acceptable?)
c) what can be done if it is as it is at the moment?
As far as I understand you correctly, irregularities should be compensated in advance by the reinforcement?!

I have addressed this with the site manager. He wants to take a look, but I think he will just say it is within tolerance again. Therefore, I wanted to ask for opinions... and look for solutions on what can be done.

The question is rather whether you just notice it – building a house is not precision mechanics. Guess how some areas look with the interior plaster? Nobody just notices...

More important would be the question regarding the lighting, because that really reveals a lot... although a crooked wall is not necessarily it, but rather bumps/unevenness.

We had scratch plaster, everything is scratched flat anyway... at least in theory

Where he's right: very little drying time between the two layers – that can become problematic later. Especially since it was actually too warm for something like that...

- I agree with you whether it will even be noticeable. And there will be lamps outside, so I have a bad feeling about it......

As I said, it didn’t catch my eye like that, only when I wanted to check for fun.

I also understand that there are tolerances, but what are they? At one spot it’s 1 cm, at another 2 cm, etc......

Well, I’ll wait for the answer from the site manager.....

are there tolerances (up to 1 cm is acceptable?)

Possibly in DIN 13345, otherwise tolerances in building construction are generally in DIN 18201 and DIN 18202. Maybe you can try placing a straightedge on a few other houses to get a feel for it.