We have an old detached garage of a simpler design, measuring 20 sqm, with a cracked concrete floor that has sunk over the years (it has been stable for many years now). I would like to level it somehow.
The floor slants quite a bit, at the garage door I can raise it by a maximum of 4 cm while I need 15 cm of concrete where it is at its lowest.
Is it possible to lay out a thinner reinforcement mesh and order a concrete truck to pump in concrete or will it just crack? Is 4 cm too thin? What do you think about SKB concrete?