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something like this would probs be a help:
https://www.screwfix.com/p/magnusson-guarded-concrete-bolster-3-4-x-16-/3822vi pulled up an old concrete kitchen floor this way, didn't seem too bad..? but perhaps that's hindsight talking...
hvsds-
How solid was the kitchen floor? How much depth did you pull up? How long did it take and what did you learn? I had discounted being able to smash out the concrete ground floor in my 1950s house. It is freezing. I would like to add insulation. I have spent a long time looking for advice and there doesn’t seem to be much that is useful, things like “insulate under the concrete” only work if you don’t already have concrete…
There are two types of thin insulation that could work for me without smashing the concrete but both are expensive and have other draw backs - aerogel and vacuum panels.
If I could smash out enough to gain even 50mm then I could probably get 70mm of insulation in and a screed without losing too much head room.
t.o.
Needs to break up a concrete slab. It's 2.3x2.3m and 100mm thick. Is it going to kill me to do it with a sledge hammer?