Grill corner walls height difference

uie, nice plan. Please be sure to show the project after completion

And stretch a guideline, otherwise it will be crooked despite the spirit level.

Pictures help. Very good

Have fun and don’t forget the cord, especially with the first coat!

Thank you for all your answers and tips One more quick question.. The stones have tongue and groove.. just edge to edge, or minimal mortar in between? Because it will surely move...

Hello Haribobo

First of all, I would install a barrier against rising damp. Then drill some reinforcing steel into the concrete floor. The wall stands freely, it is not particularly high. The pressure alone will not hold it. Then you first stretch a string. Rent a wet cutting table (or check who can cut the few stones to the right height for you). From the string, take the different heights. Let's say at the very bottom 10 cm, the second stone 8 cm, the third 6 cm. You lay them in such a way that you level out the slope and then the first "real" layer comes. With this, you have to be horizontal. Then the next layer is offset on top. Then build up to the final height.

Steven

simply butt jointed, or minimal mortar in between?

Hello

only the first layer is set in mortar. The next KS blocks are glued. You can smear some adhesive in between. It doesn't hurt.

Steven