ᐅ Interior walls on the upper floor: lightweight construction instead of masonry?

I am not a big fan of drywall and prefer solid walls. Although this is more labor-intensive, it is also more substantial. It is also easier to attach things to solid walls than to gypsum boards.

Hello,

Kurt1985 schrieb:

I’m not a big fan of drywall and prefer masonry walls. It’s more work but also more solid.

Of course, especially with 17.5 cm (7 inches) walls and thinner. Installing drywall instead of masonry is more labor-intensive, which is why this type of interior finishing tends to be somewhat more expensive compared to masonry.

The issue in attic spaces is usually sound insulation between bedrooms, and this cannot be achieved with very thin materials—even if they are solid. Only calcium silicate bricks are an exception here, but most bricks cannot handle mixed materials well. So the choice is either full calcium silicate bricks plus external thermal insulation composite system (ETICS) or clinker bricks or another type of brick, and in the attic drywall or gypsum boards if the homeowner is sensitive to noise.

Kurt1985 schrieb:

It’s also easier to mount things there than on drywall.

You need a special anchor for each type of brick; neither calcium silicate bricks, hollow bricks, expanded clay, nor aerated concrete will hold anything beyond a picture without a specific mounting system.

Regards, Bauexperte

Thank you all for your responses! I have barely been able to check the forum lately due to work commitments and viral infections, but I have noted all the arguments and will bring them into the next discussion with our negotiating partners.

Best regards,

Kazazi

A small tip: Use Fermacell gypsum fiberboards, double-layered, with insulation (Isover Acoustic) in between. The advantage is that they can be easily dismantled during future renovations, are slim, and simple to install—just prime and paint, and you’re done. Alternatively, I would choose an 11.5 cm (4.5 inches) thick solid or hollow brick wall, depending on structural requirements. However, this is more labor-intensive to build and requires plastering on both sides. Gypsum boards, expanded clay, or bricks are also possible options.

Best regards

We have a 6x8 cm (2.4x3.1 inch) KVH stud frame with 12 mm (0.47 inch) OSB on both sides and 12.5 mm (0.49 inch) drywall (gypsum plasterboard) on both sides as well (so much for wall mounting compared to masonry; I don’t need any anchors, don’t have to pre-drill, there’s hardly any dust or mess, and I can screw and nail directly into the wall—our 50-inch flat-screen TV holds perfectly). The inside is filled with 6 cm (2.4 inch) partition board.

The stud frame for the adjacent apartment (basically like a semi-detached house) is doubled, and in the middle I simply placed 5 cm (2 inch) concrete slabs as mass, which works great too. Compared to my neighbor’s house, built the same year with aerated concrete and interior walls made of sand-lime bricks, this is no better.

Oh, I’m getting lost with the abbreviations – what do KSV, KSL, KVH, OSB, and GKB mean?

Your puzzled Kazazi