Kitchen worktop made of screed elements?

I have planned a kitchen and want to build it mostly myself. My problem is the countertop, as it is quite complicated. I will make the substructure from prewall elements or brick it up, we'll see. The countertop cannot be brought into the room in one piece and one made of chipboard is not sensible, as the left side would have to be in 3 parts. Now I thought I would model it on site from screed elements of 20 mm each in 2 layers and then cover it with ceramic tiles or granite. Is that a viable approach? Regards Thielemann

Almost 100 viewers and no one says a word. Is the thought bad?

Presumably, the question fits better in a DIY forum. It can certainly be solved that way. Before I build something so heavy and massive into the kitchen, I could probably better live with a neatly divided work surface. A sink in the corner has not proven itself with us in the last 17 years. When cooking with two people, you constantly get in each other's way because the access is narrow and the corner behind the sink is practically unreachable and dead space for smaller and medium-sized people.

I model them on site from screed elements of 20 mm each in 2 layers and then cover them with ceramic tiles or granite. Is that a viable approach?

You can use normal cheap standard junction boxes. Screw them together and then properly cover them with tiles. Use two-component adhesive, then the joints will also be acid-resistant.

Not just now, because it is too wide where the cooktop is and I would need 3, and there would still be the hole for the cooktop. Then there are the narrow spots around the shaft, hence my thought.

Not just now, because it is too wide where the cooktop is, and I would need 3, and then there would still be the hole for the cooktop. Then there are the narrow spots around the shaft, that's why I thought so.

I shrug: I had it like this... also with a stove, coincidentally an 80s corner sink, all in all everything 75 cm deep (corner deeper) and the counter was 110.
The boards, all cut from common 58 cm worktops.

But do it in screed if you want it that way.