Hey everyone! I recently noticed a weird soft spot on my basement floor, which is mostly concrete. The previous owner put down some plastic floor panels, and this soft spot has always been hidden under those panels. It's right at the bottom of the stairs and doesn't feel like concrete at all. I stepped on it today, and it caved in slightly, leaving me curious about what's underneath. It seems like it might be made of wood, and it's wet. The surrounding areas feel solid as a rock, so I'm not sure what's going on. Can anyone explain why this specific spot is different, and what kind of contractor I should call to check it out?
3 Answers
I had a weird thought—maybe it’s covering a sewer clean-out? You might want to check for a pipe under that spot, just to be safe!
You’ll want to pull up the flooring in that area until you can see what's under the subfloor. Hopefully, it’s just a small section that’s the issue. Keep us updated once you get in there!
It sounds like this could be a section where concrete was removed and replaced with wood, possibly as a quick fix. If you check under the flooring, you might find just a bunch of 2x4s and plywood sitting right on top of dirt. It's definitely worth investigating further to see what's really going on under there!

That’s an interesting idea! I’ll definitely check for that. Thanks!