Uneven concrete floor

[awills36]

So, I'm going to tile the kitchen floor.
The problem is.........
We've had the old outside toilet knocked through to the kitchen but have found that the concrete floor is approx 10mm higher in that corner than the rest of the original kitchen. The raised area is just under 2 square meters.
I'm thinking that it'll be much simpler to lower that portion rather than raising the floor of the rest of the kitchen.
I've thought of cutting sveral channels with an angle grinder and chiseling the rest out.

Any suggestions?

 

[Richard C]

Sounds the best way to go & a SDS breaker would make short work of it. Once you’ve leveled it out, I would lay a self leveling compound over afterwards, possible the whole floor is it needs it. An SLC It will give you a flat tile base which is important if you want it to look good, even more so with large format tiles.

If you’ve incorporated an outside loo, is there a damp membrane in the floor?