Vinyl Plank Flooring Problems: What Actually Goes Wrong

Plank flooring surface showing wear at the seams

Flooring planks stacked ready for installation

Search for vinyl plank reviews and you get marketing. Search for vinyl plank problems and you find out what the floor is actually like to live with.

None of the issues below are reasons to avoid LVP — it remains the right floor for most wet rooms. But every one of them is predictable, and most trace back to installation rather than the product.

1. Gapping between planks

The most common complaint, and almost always a temperature problem.

Vinyl expands and contracts with heat. A floating floor in a room with big south-facing windows can move several millimetres across a day. If the installer left no expansion gap at the walls, the floor has nowhere to go — so it separates at the weakest joints instead.

Prevention: a 6–10 mm expansion gap around the entire perimeter, hidden by skirting. Let planks acclimatise in the room for 48 hours before installation. Ask your installer to confirm both, in writing.

Fix: small gaps can sometimes be tapped closed. Widespread gapping means lifting and reinstalling with a proper gap.

2. Peaking and buckling

The opposite failure. The floor expands, cannot move sideways, and lifts at the joints instead.

Two causes: no expansion gap again, or something pinning the floor — a heavy kitchen island, a bookcase, skirting nailed through the planks rather than to the wall.

Prevention: heavy fixed furniture should sit on the subfloor, not on a floating floor. If that is not possible, glue-down LVP instead of click-lock.

3. Dents from furniture

Vinyl is softer than laminate. A fridge leg, a piano castor, or a dining chair dragged for two years leaves marks that do not recover.

Wear layer thickness is the number that predicts this. Under 12 mil in a room with real furniture is a mistake you will notice within a year.

Wear layer	Realistic use
6–8 mil	Avoid. Spare room at best.
12 mil	Normal household traffic
20 mil	Family home, pets, rentals
28 mil+	Commercial. Overkill and lasts forever.

Prevention: felt pads under everything, wide castors instead of narrow, and 20 mil in rooms with heavy furniture.

4. Discolouration under sunlight and rubber

Two separate problems that look similar.

Direct sun fades cheaper LVP over a few years, and the shape of the faded patch will match your window exactly. Better products carry UV-stable coatings; the cheapest do not.

Rubber causes a different and more dramatic stain — rubber-backed mats, car tyres in a garage, some appliance feet react chemically with vinyl and leave a permanent yellow-brown mark. Use felt or woven mats, never rubber-backed ones.

5. Telegraphing — every subfloor flaw showing through

LVP is thin and flexible. It follows whatever is underneath. A high spot, a proud screw head, or deep grout lines from old tile will show as a visible line or bump within months.

Prevention: this is the step contractors skip when the quote is tight. The subfloor should be flat to roughly 3 mm over 2 m. Grout lines deeper than about 3 mm need a skim coat. Ask specifically whether subfloor prep is included — on a suspiciously cheap quote, it usually is not.

6. Water getting underneath

The plank is waterproof. The floor is not.

Water finds the seams, sits on the subfloor, and stays there. The vinyl above is unharmed while the plywood beneath rots and grows mould. Because nothing looks wrong, this is often found by smell rather than sight.

Prevention: silicone at the perimeter in bathrooms and laundries, and wipe standing water promptly — “waterproof” describes the plank, not the assembly.

7. Hollow sound underfoot

A floating floor over a hard subfloor sounds hollow. It is not a defect and it cannot be fixed after installation.

Prevention: a proper acoustic underlayment. It costs little and is the difference between a floor you notice and one you do not. Do not accept the thin foam included free with budget planks.

Which of these is the product’s fault?

Problem	Root cause	Preventable?
Gapping	No expansion gap	Yes
Peaking	Floor pinned by furniture	Yes
Denting	Wear layer too thin	Yes — buy 20 mil
Sun fading	Cheap product	Mostly
Rubber staining	Chemical reaction	Yes — no rubber mats
Telegraphing	Subfloor not prepped	Yes
Water underneath	Unsealed perimeter	Yes
Hollow sound	No underlayment	Yes, before install only

Every row says yes. That is the real finding: vinyl plank rarely fails as a product. It fails because someone skipped preparation.

Frequently asked questions

How long should LVP last?

Twenty to fifty years for luxury-grade with a thick wear layer. Ten to fifteen for thin budget planks in a busy room. The wear layer is the variable, not the brand.

Can individual planks be replaced?

Glue-down, yes, reasonably easily. Click-lock, only by unclicking back from the nearest wall — which is why buying 10% extra at installation matters. Colours get discontinued.

Does it work with underfloor heating?

Usually, with a surface temperature cap around 27–29°C. Exceeding it voids warranties and worsens expansion problems. Check the specific product’s documentation.

Is it worse than laminate?

Different failure modes. Vinyl dents and gouges; laminate scratches and swells if it gets wet. Our full comparison covers which belongs in which room.

What should I ask an installer?

Three questions: what expansion gap will you leave, is subfloor levelling included, and what underlayment are you using? Vague answers to any of these predict most of the problems above.

The takeaway

Buy 20 mil, insist on subfloor prep and a real expansion gap, use a proper underlayment, and keep rubber off it. Do those four things and almost nothing on this page will happen to you.

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