How thick or high should a terrace construction be?
The thickness or height of your terrace structure depends on various factors. Load-bearing capacity, moisture drainage, rising damp, tensions.
The concrete rubble prevents collapse later and makes the terrace structure load-bearing.
The drainage mortar always removes the moisture, and there is no longer any chance of rising damp.
Due to the Staenis grid, all tensions are removed from the screed, so that tiles no longer experience tensions.
Choose the load class below and see how high you need to build it up.