The 3 things I learned when I had my foundation repaired that shocked me: clay heave can lift slabs, not just sink them

https://andresphzd476.capitaljays.com/posts/before-you-call-for-foundation-repair-3-key-signs-and-steps-to-know

The 3 things I learned when I had my foundation repaired that shocked me: clay heave can lift slabs, not just sink them, and root moisture removal can trigger upward movement.