After my basement flooded and I removed the carpet I found the previous owner had sealed the floor but it's flaking up now and I want to remove it all. It's about 200 sqft so a wire brush by hand is not going to cut it. So, what's the best method to remove this stuff? I'm thinking something like a floor sander but with a wire brush roller. Not sure if such a thing exists.
Consider a drill mounted wire brush, like this one
This particular version requires a separate mandrel that attaches it to the power drill.
If you go this route, wear safety glasses and protective clothing (long sleeve shirt, etc.).