Your Building Might Be Rotting From The Inside (Concrete Cancer Explained)

Added: 2026-05-27

[00:00:00]Buildings around the world are rotting from the inside. It's called concrete cancer, and it's invisible until it's too late. The disease spreads through steel reinforcement bars inside concrete structures. Saltwater and chemicals slowly eat away at the metal. From the outside, everything looks normal, but inside the steel expands as it corrodes.

[00:00:22]This creates cracks. The concrete weakens, then it fails catastrophically.

[00:00:27]The Champlain Towers in Florida, 98 people died when concrete cancer helped bring down the entire building. If you want more stories they don't want you thinking about, subscribe. Most buildings built in the '60s and '70s are reaching their expiration date.

[00:00:43]Engineers know which ones are infected.

[00:00:45]They just haven't told you yet.