I'm renovating a room on the ground floor of my house, we took down a brick wall and took up the existing wooden floor that was raised off the ground to find a bit of a mess.
Under the wooden floor we found mostly bare flat concrete, but also in the back left corner there's a patch of bare ground (mostly chalk which is what the soil is like around here).
At the highest point it's 30-35mm above the level of the concrete that covers the rest of the floor.
I've been trying to figure out how to level it all out so I can lay a new floor but I'm really struggling to work it out.
I'd ideally like to get the whole floor to the same level as the existing concrete sections, I know that means I need to break out the bricks and dig the ground so it's all beneath the level of the existing floor but I've got no idea what to do after that.
I was told I could use self levelling compound, but would that work on the bare ground? Or would it just fail to adhere?
Thanks in advance for any advice.