Uneven Floor Singapore: Causes & Fixes

An uneven floor shows itself in ways that are easy to misread — furniture rocking, a ball rolling to one corner, or planks that flex underfoot. Distinguishing a genuinely uneven subfloor from a flooring surface problem determines whether you're facing a simple fix or a substrate job.

Quick Takeaways

Rocking furniture and rolling objects indicate slope; flexing underfoot indicates a dip or void
Unevenness detected after installation usually originates in subfloor preparation
Older resale units more commonly have settled, uneven substrates than fresh BTO flats
Genuinely correcting unevenness means addressing the subfloor, not the flooring above it

Floor feels uneven? Visit the Monli showroom at Tampines for an assessment or WhatsApp +65 8112 4866.

Flooring ·GERCLIC

Flooring ·CLASSICO CLIC 4

Flooring ·CLASSICO CLIC 2

Telling Slope from Dip

These are different problems. A slope means the floor is level within itself but tilted overall — a marble rolls consistently in one direction, doors swing open or closed on their own. This usually reflects the building's own construction rather than your flooring installation.

A dip or high spot is localised. Furniture rocks on one particular tile, the floor flexes when you step in a specific area, or a straight edge laid across the floor shows a gap in the middle. This is what flooring installation is supposed to address through levelling, and its presence afterwards points to preparation that was incomplete.

Designer Tip: Lay a long straight edge — a spirit level, a metal ruler, even a straight plank — across the suspect area and shine a torch along it at floor height. Light passing under the straight edge shows exactly where and how deep the dip is, which is genuinely useful information for any installer you consult.

Why It Matters Beyond Comfort

An uneven substrate under a floating floor causes the flooring to flex with every footstep rather than sitting supported. Over time that flexing stresses plank joints, produces squeaking, and in rigid SPC can eventually crack a plank at the unsupported point. So unevenness isn't purely a comfort issue — it shortens the floor's working life.

Installer Tip: Packing shims under furniture legs treats the symptom, not the cause. If the unevenness is severe enough to make furniture rock, it's also severe enough to be stressing the floor — worth an assessment rather than a workaround.

Flooring ·JF131+JF116

Flooring ·JF123

Flooring ·JF122

What Correcting It Involves

Genuinely fixing unevenness means getting to the subfloor — lifting the flooring in the affected zone, applying self-levelling compound or making a more substantial correction, letting it cure fully, then re-laying. There isn't a shortcut that works from above, because the problem lives underneath.

For a slope inherent to the building rather than the subfloor preparation, correction is a bigger structural conversation and may not be practical or worthwhile depending on severity.

Cost of Correcting Uneven Floors (S$)

Scope	Typical Cost
Assessment	From S$50–100
Localised lift, level & re-lay	From S$300–700
Full room re-levelling	From S$8–15/sqm plus re-laying

Prices are indicative. Contact Monli for an assessment and quote.

FAQs

How do I tell if my floor is sloped or has a dip?
A slope makes objects roll consistently one direction across the room. A dip is localised — furniture rocks in one spot, or a straight edge shows a gap in the middle.

Is an uneven floor just a comfort problem?
No. It causes the flooring to flex with each step, stressing joints, producing squeaks, and potentially cracking rigid SPC planks over time.

Why is my floor uneven after a recent installation?
Unevenness noticed after installation usually points to subfloor preparation that didn't fully address existing dips or high spots.

Can unevenness be fixed without lifting the floor?
Not genuinely. The problem lives in the subfloor beneath, so correcting it requires access to that layer.

Are older HDB flats more likely to have uneven floors?
Generally yes. Decades of settling make uneven substrates more common in resale units than in fresh BTO flats.

Should I just shim my furniture instead?
That treats the symptom. If unevenness is enough to rock furniture, it's also stressing the floor and warrants proper assessment.

Uneven Floor Singapore: Causes & Fixes