I had a plumber dig a trench to rough-in a bathroom in my basement. The concrete repair was done fairly poorly. It had areas that bumped up higher than original floor. I had them come back to fix it and they used a grinder to level it.
It's now much better but there are still areas where the concrete patch sits lower than the original foundation floor. It's very minor; maybe 1/8th of an inch in the worst places. I'm planning on using DRIcore style subfloor (2ft x 2ft tongue + groove boards) and when I place one of those on top of some of these problematic areas, the subfloor board teeters a bit when I step over it. So I'm concerned that the floor will not be stable once I install the subfloor boards.
Can I / should I use something like self-leveling cement to flatten out those areas?
Any other products or tips to help me get a smooth, flat and straight cement floor beneath the subfloor?