Why Do Parquet Blocks Crack in Singapore Homes?
"It's just old" is the explanation people usually land on when a parquet block cracks — but age on its own doesn't crack wood. Something changes the moisture content of the timber faster than it can adjust, and that's almost always the real cause.
Rapid humidity swings from air-conditioning
Wood absorbs and releases moisture with the air around it. A room that goes from humid all day to cold and dry all night — a bedroom aircon on a timer is the classic case — puts the timber through a daily stress cycle that eventually cracks a block along its grain.
A dry subfloor pulling moisture unevenly
If the subfloor beneath one section of parquet is drier than the rest — near a heat source, or simply due to uneven original construction — that section shrinks faster than its neighbours and cracks under the tension.
Impact on an already-stressed block
A block that's already lost some moisture and gone slightly brittle is far more likely to crack from a dropped object or dragged furniture leg than a block in good condition. The impact is often just the final straw, not the sole cause.
Old, failing adhesive underneath
Original bedding adhesive that's dried out over decades no longer holds the block firmly in place. A block that can flex slightly under footstep pressure, instead of staying rigidly bonded to the subfloor, cracks far more easily than one that's still firmly fixed.
Knowing the cause matters because it changes the fix — a cracked block from a one-off impact just needs replacing (see our plank & block replacement service), but a floor cracking from humidity cycling will likely crack again elsewhere unless that's addressed too. We flag the difference when we inspect.