Creating an attachment on a KS wall with clinker bricks, experiences?

Hello!

We would like to build an extension to our existing building with wall thicknesses of 240 mm calcium silicate brick/ 2 cm Styrofoam, 2.5 cm clinker facing bricks (ground floor). Now the question is how to treat the wall to which the extension is to be attached, or not. Do you remove everything except the calcium silicate brick, or do you leave the facing bricks on and lay another layer in front of them? It is clear that there must be a separation between the external wall connections. We are basically concerned with the longitudinal side of the wall, remove the facing bricks or leave them?

Thanks in advance for the information!

We would like to build an extension (ground floor) onto our existing building with wall thicknesses of 240mm sand-lime brick/2cm Styrofoam, 2.5cm facing bricks. Now the question is how to treat the wall to which the extension is to be attached, or if it should be treated at all. Do you remove everything except the sand-lime brick here or leave the facing bricks on and lay bricks in front again. [...] We are basically concerned with the long side of the wall, facing bricks off or leave them on?

Would an answer with the wording "42" make it clear to you that the clarification of the situation is not sufficient for a useful answer?

That a separation must be made between the outer wall connections is clear.

I do not understand this sentence. Depending on the scope of the extension, the legal non-conformance protection for the original year of construction can be lost, and then no valid requirement can be met with this wall structure anymore. Otherwise: I do not see the effort justified for a 4.5 cm gain by removing the symbolic insulation and the facing bricks.

Otherwise: 4.5 cm gain by removing the symbolic insulation and the slats does not justify the effort.

Thank you for your answer. So the current exterior wall will then become an interior wall of the extension. The question about removing the insulation including the slats arose partly because of whether one would then build another wall in front of the resulting "interior wall" and plaster it, or how one technically solves such a thing. Two door openings are also to be made in the wall. The thicker the wall, the deeper the frame. By separation at the outer walls I meant the wall connection of the "new" walls to the existing structure. Due to the different settling behavior, one is supposed not to interlock both but rather leave "space" for movement and to prevent cracks. Or did I misunderstand that?

By separation at the outer walls I meant the wall connection of the "new" walls to the existing structure. Due to the different settlement behavior, you are not supposed to interlock both but rather leave "space" for movement to prevent cracks. Or did I misunderstand that?

I, for one, still haven’t understood anything.

So the current outer wall then becomes an inner wall of the extension. The question regarding the removal of the insulation including the facing bricks arose, among other things, because I wondered whether you then build another wall in front of this newly created "inner wall" and plaster it, or how something like this is technically solved. Also, two door openings are to be made in the wall. The thicker the wall, the deeper the door frame.

Maybe you should open yourself to the realization that this academic discussion has no moral value, and simply come forward with a comparison of the actual current state and the desired state. Best to scan the floor plans from the building file (yes, all of them, not just the supposedly solely affected floor) and a section, and scribble around on the new floor plan of the floor to be changed (i.e. ground floor once as original and once as intended). Mind you, scribbling around is more effective than “great drawings.”