Hollow or Cracked Tiles: Repair, Replace, or Tile Over?

Malaysian homeowners know the sound: tiles that knock hollow underfoot, then one hot afternoon — *pop* — a whole section lifts and cracks. It looks alarming but the cause is mundane, and so is the fix.

Why tiles pop here

Tiles and concrete expand at different rates in our heat. When the original installer skimped on adhesive coverage (very common decades ago), the bond fails under thermal stress and the tension releases upward. Older homes without expansion joints make it worse.

Your three options

• Repair the affected area — hack and re-lay only the popped/hollow section. Right choice when the rest of the floor is sound. Labour from RM5–12 per sq ft plus matching tiles.
• Tile over the old floor — if the existing floor is mostly solid and level, laying new tiles on top skips hacking entirely: less cost, less dust, days faster. Floor height rises ~10–12mm, so doors may need trimming.
• Full hack and re-tile — when hollowness is widespread or you want a new look anyway. Hacking and screed runs RM2–6 per sq ft on top of laying costs, plus debris disposal.

How to check your own floor

Tap tiles with a coin: solid areas sound dull, failing areas ring hollow. Map the hollow zones — if they cover more than a third of the room, area repairs stop making economic sense.

Send us a video of the knock test and your floor size on WhatsApp; we can usually tell you which option fits before any site visit.