21/06/2026
If you've noticed rust stains creeping across your ceiling or chunks of concrete breaking away from the corner of your toilet wall, you're likely dealing with spalling concrete. Knowing spalling concrete, what it is, causes, and why flats are so vulnerable gives you a real head start on fixing it before it gets worse. This isn't a cosmetic problem you can paint over. It's a structural deterioration process, and in Singapore's climate, it moves faster than most homeowners expect.
Spalling concrete repair.What Is Spalling Concrete?
Spalling is the breaking away or flaking of concrete from a surface. It starts as a small crack or blister, then pieces of concrete begin to detach, exposing the steel reinforcement bars (rebar) beneath. Once that rebar is exposed, the problem accelerates quickly.
It matters because concrete isn't just a finish layer. It protects the steel inside. When it breaks away, both the structural integrity and the safety of the space are compromised. A falling chunk of concrete from a ceiling or corridor soffit is a real hazard.