ᐅ Demolition and reconstruction of exterior wall due to defects

Hello everyone,
the exterior wall of our ground floor shows the following defects:
- Overlap dimension undershot by 50%
- Installation not compliant with building authority approval (bed joints were not fully filled with mortar)

For the issue of insufficient overlap, fiberglass mesh plaster can be used to minimize cracking risks.
But how can bed joints be fully mortared afterwards?
The installed masonry unit is: Bellenberg MZ70

Now for the main question to an expert: Is it possible to replace an exterior wall when the ceiling above has already been poured?
What is the best procedure to do this?

Nightfil schrieb:

- Underrun of lap length by 50%

Does this mean that the lap length requirement is not met in more than half of the locations???

Nightfil schrieb:

There is mesh plaster available to minimize cracking risks related to lap lengths.

According to whose advertisement? - no way, little Peter 🙂

Nightfil schrieb:

Is it possible to replace an exterior wall masonry after the ceiling above has already been cast?

In this case, I would definitely replace "possible" with "necessary":

Nightfil schrieb:

- Application not in accordance with building authority approval (bed joints were not fully mortared)

All tutorial videos on this topic—even those in Polish, which I don’t understand—show the process so clearly that even I, as a complete office-theory person, couldn’t produce such extreme poor workmanship. This seriously calls into question the expertise of all responsible parties!

Nightfil schrieb:

What is the best way to proceed in this situation?

Hopefully, you have a completion bond in place. I see a dismantling or partial teardown as unavoidable—this could prompt the contractor to attempt to evade responsibility by filing for insolvency. Your recommended nighttime reading: https://www.hausbau-forum.de/threads/bauunternehmen-stellt-arbeiten-trotz-ueberzahlung-ein.31945/ ;-)

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https://www.linkedin.com/company/bauen-jetzt/

11ant schrieb:

Is that supposed to

According to whose advertisement? - no way, little Peter 🙂

Webertec Distance, for example? Or is that not possible with this type of brick?

Nightfil schrieb:

Webertec Distanec for example? Or is that not possible with this type of brick?

I hope the moderator only removes the link and not you. Reinforcing the plaster does not address the structural concerns; it only prevents the defect from becoming visible as a plaster crack. However, this is merely a cosmetic fix for localized breaches of the bonding length – in the case of your house – or rather, the serious problem where your house is – it is not sufficient. In my opinion, the only proper solution is to dismantle and rebuild.

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https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/

11ant schrieb:

The plaster reinforcement does not resolve the structural concerns; it only prevents the defect from showing through as a plaster crack. However, this is merely a cosmetic measure for localized violations of the lap length. In the case of your house—or more accurately, a serious mess in place of your house—this is not sufficient. In my opinion, the proper solution here is a complete dismantling.

The structural calculations were checked by the brick manufacturer. That should not be a problem. There is still enough reserve capacity.
The only question is whether a mesh can cover widespread shortfalls in the lap length...
I am already in talks with a lawyer... According to him, even a single violation of the approval is sufficient grounds for termination. We have a contract based on the German Construction Contract Procedures (VOB). This is really a major burden now.

Nightfil schrieb:

The structural calculations were checked by the brick manufacturer. That shouldn’t be a problem. There is still enough reserve capacity left.

However, your description reads quite differently. I also can’t imagine any brick manufacturer having an engineer certify that their products, even when not installed properly, still meet the same requirements as the test wall for the certification body without any concerns. It would be best if you took photos of all the nonsense that has been "built" there.

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https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/