How the two differ in kind
The confusing part of this comparison is that the two products are made of much the same stuff. Both are polyvinyl chloride, both are a printed design film under a clear wear layer, and neither absorbs water the way a timber or an HDF-cored laminate does. Drop a bucket on a plank and drop it on an offcut of sheet and nothing happens to either. That shared material is why the marketing on both boxes says waterproof, and it is also why the word is nearly useless here — because a floor is not a material, it is an assembly, and these two are assembled on opposite principles.
Sheet vinyl arrives as a roll in one of a small number of fixed widths and is cut to fit the room as a single continuous piece. Most domestic bathrooms are narrower than a full-width roll, which means the covering can go down with no joint in the field at all — and the few joints a wider room forces are made on site, deliberately, by a person who seals or hot-welds them shut. It can also be taken further than a floor: turned up the wall over a cove former and closed at the top with a capping strip, so the finish becomes a shallow impervious tray with the subfloor sealed inside it. That detail, not the material, is why sheet vinyl is what hospitals, commercial kitchens and genuine wet rooms are floored with.
Luxury vinyl plank is the inverse. It is a floating assembly of hundreds of factory-made mechanical joints, dry-clicked rather than sealed, resting on the subfloor under its own weight — and because the whole sheet of it grows and shrinks with the season, it requires an expansion gap left open at every wall and every fixed obstruction, covered afterwards by a bead or by sealant but never closed with the floor itself. That gap is a deliberate, permanent, designed-in void running around the room at exactly the line where a shower splashes, a bath overflows and a washing machine hose lets go. So ask which room you actually have before you compare looks. Is water something that lands on this floor and gets wiped up — a kitchen, a cloakroom, a utility with an appliance that behaves? Or is water something this floor is expected to contain and shed while it stands there — a shower without a tray, a floor gully, a room that gets mopped rather than swept? The first room is a genuinely open choice. The second one is not a comparison; it is sheet vinyl or tanked tile, and the plank is not on the list.
The factors that actually differ
Show
| Sheet vinyl | Luxury vinyl plank | |
|---|---|---|
| The joints, and who made them | Few, and made on site on purpose. In a room narrower than the roll there are none at all in the field, and where the width forces one it is cut, fitted and then sealed — cold-welded with a seam chemical that fuses the two edges, or hot-welded with a rod into what is effectively one piece. The joint count is a property of your room's dimensions, not of the product. | Hundreds, and made in a factory. Every plank edge and end is a mechanical profile clicked dry — no adhesive, no sealant, no fusion — and the count rises with every square metre laid. Individually they are tight and well engineered; collectively they are a great many unsealed paths through an otherwise impervious floor. |
| What happens where the floor meets the wall | It can stop being a floor. Over a cove former the sheet turns up the wall and is capped at the top, so there is no floor-to-wall junction left at floor level for water to find — the room gets a tray with a lip. Even laid flat and scribed, the edge is bonded and sealed rather than parked short of the plaster. | A gap that has to stay a gap. A floating floor needs an expansion allowance at every wall, doorway, pipe and threshold, and it must not be filled solid or the floor buckles instead of moving. It is hidden by skirting, scotia or a flexible bead — a cosmetic and partial closure over a void that runs the full perimeter of the room. |
| Things that stand on the floor | Scribed around and bonded down. A WC pan, a basin pedestal, a shower tray upstand or a run of kitchen units are template work: the sheet is cut to the shape, taken under or up to it, and sealed at the line. Nothing about a fixture bolted through the floor threatens the covering, because the covering is not trying to move. | The floating floor's weak spot. Anything screwed through a floating floor pins it, and a pinned floor cannot expand — so the movement comes out somewhere else, usually as a gap opening at the far wall or joints lifting in the middle. Every fixture therefore has to be designed around before the first plank goes down rather than dealt with when the row reaches it — the FAQ below sets out what that means for a WC pan, a shower tray and a run of units. |
| What the subfloor has to be | Smooth, not just flat — and this is where the budget hides. A thin flexible sheet telegraphs everything beneath it: board joints, proud screw heads, trowel ridges, a grain of grit left under the adhesive. What telegraphs then wears, because the high spot takes all the traffic. Old boards or rough ply usually mean an overlay or a smoothing compound before the floor is even ordered. | Forgiving of texture, fussy about dips. A rigid core plank bridges the minor unevenness that would print through a sheet, which is exactly why it goes over so many imperfect subfloors without preparation. What it will not tolerate is a hollow: an unsupported span flexes, and flexing click joints click audibly and eventually fail. |
| Underfoot when it is wet | The only side with a purpose-made answer. Sheet is manufactured in safety grades with aggregate carried through the wear layer, classified for barefoot wet areas, which is what gets specified in accessible bathrooms and care settings. The trade-off is honest and worth knowing: the texture that grips wet feet is also the texture that will not wipe as easily as a smooth floor. | Rarely the same product class. Ordinary plank is a smooth, sealed wear layer chosen for looks and cleanability, and wet it behaves like any smooth sealed floor. It is not dangerous, and some ranges do publish a slip figure — but a published rating is not the same as a barefoot wet-area safety grade, so read which test it was measured under before treating it as one. |
| Point loads and dents | Softer, and it remembers. Most residential sheet is cushioned, which is what makes it warm and quiet underfoot and kind to dropped crockery — and it is also what takes a permanent impression from a fridge foot, an appliance leg or a slid-across washing machine. Spreader cups under point loads are not optional in a laundry. | Harder, and it transmits. A rigid core resists indentation far better under the same appliance foot, but it passes the load to whatever is underneath and gives back nothing underfoot: cooler, louder and less forgiving to stand on and to drop things onto. |
| Repair, and what changing it later means | Effectively whole-floor. There is no invisible patch in a printed continuous sheet — a let-in piece has to match pattern, batch and wear, and the seam around it is exactly the thing the sheet existed to avoid. Against that, the room is small and the replacement is a single visit that leaves nothing behind. Batch and pattern availability years later is a real risk with printed goods. | Plank by plank, if you planned for it. Damage near a wall unclicks back; damage in the middle is a cut-out-and-glue-in repair rather than a clean swap, and it works at all only if a spare pack from the same batch is in the loft. That is a genuine advantage in a kitchen where one plank meets a dropped pan — and it is the reason to buy the spare pack on day one, not the day you need it. |
| Fitting it | One shot, by someone who has done it. A bathroom is the hardest small room in the house to template: a WC, a pedestal, a pipe boxing and a door architrave in a few square metres, all scribed, with a heavy awkward roll that has to be carried in and relaxed first. Cut it wrong and the mistake is the whole sheet, not a piece. Coving and welding are separate skills again. | The DIY floor, pausable at any row. Click planks go down with a saw and a tapping block, the offcut ending one row starting the next, and the job stops at any point and resumes. The skill floor is genuinely low — the parts that catch people out are the planning ones: the expansion gap, what to do at doorways, and what not to trap the floor under. |
| What the cost is made of | Bought by length, fitted by perimeter. The material is a length off a roll of fixed width, so the room's shorter dimension against that width sets the waste before the area does — a room a fraction wider than the roll pays for a whole extra strip. The labour is skilled and concentrated in one unrepeatable visit, and the extras that turn a covering into a wet-room floor are billed against the edge of the room rather than the middle of it — so shrinking the floor area barely moves them. | Bought by area, extended by perimeter. Material tracks the floor area plus a waste allowance for how cut-up the room is, with offcuts feeding the next row. Labour can be your own time. The perimeter then charges its own bill in beads, scotia, threshold bars and sealant — plus any underlay the product does not carry on its back — and none of that turns the open gap into a seal. |
Which one, and when
Choose sheet vinyl when…
- It is a wet room in the literal sense — a gully in the floor, a shower with no tray, a room designed to be mopped or hosed rather than wiped. Coved and welded sheet is a containment system; the plank is a covering, and no amount of sealant around its perimeter converts one into the other.
- The room is narrower than a roll width, which most domestic bathrooms are. A floor with no joint in it anywhere is a class of failure deleted rather than managed, and it is the one thing on this page that the other option cannot offer at any price.
- Wet barefoot grip is a requirement rather than a preference — an accessible bathroom, a shower room for someone unsteady, a family bathroom that is genuinely used as one. Purpose-made barefoot wet-area safety grades are a sheet vinyl product class, and that is the side of the comparison to shop on if the rating is the requirement.
- The floor is a hygiene surface first and a feature second: a utility, a plant room, a clinic-style cloakroom, a rental bathroom that has to survive tenants and be replaced cleanly between them.
- Warm and quiet underfoot matters in a room entered barefoot. Cushioned sheet is the softer of the two by construction, and a bathroom is the room where that is felt most.
Choose luxury vinyl plank when…
- The floor has to read as the same floor as the rooms either side of it. A kitchen open to a living space is the strongest case on the page for the plank: sheet has no answer to a continuous wood-look floor running through the whole ground floor.
- The wet is splashes and spills, not standing water. A kitchen, a cloakroom, a powder room or a utility with an appliance that behaves is a room where containment is insurance you will probably never claim on — and looks, warmth of appearance and repairability are worth more than a policy.
- You are fitting it yourself. Sheet in a bathroom is skilled template work with a one-shot cut; a click floor is an ordinary weekend with a saw, and the money saved on labour is real rather than notional.
- The subfloor is imperfect and you are not skimming it. Everything a sheet would telegraph, a rigid plank bridges — provided the unevenness is texture rather than hollows.
- You want damage to be a plank, not a project. Buy the spare pack with the floor and one dropped pan or one dragged appliance stops being a reason to re-floor the room.
Now run your own numbers
This page holds no prices on purpose — a national average is wrong for almost every real project. Quantify both options with your dimensions and your local quotes.
Frequently asked questions
- Which one costs more?
- The two costs are shaped differently enough that a single number would be a fiction, and this site does not publish those. Sheet vinyl is bought as a LENGTH off a roll of fixed width, so the first thing that moves its material cost is not your floor area but your room's shorter dimension measured against that roll width — a room slightly wider than the roll buys a whole extra strip and throws most of it away. The seam calculator on this page is the quickest test of whether your room falls that way: it returns a seam count, and a count above zero is the signal that a second strip — and the waste attached to it — is in your quote. Its labour is skilled, arrives in one visit, and cannot be un-cut, and the details that make it a wet-room floor rather than a covering — coving, capping, welded seams — are priced against the PERIMETER and the number of obstructions, so a small bathroom full of fixtures is dense, expensive work for its size. Plank is bought against AREA with a waste allowance for how cut-up the room is, offcuts feed the next row, and the labour has a low enough skill floor to be your own weekend. Its perimeter then bills separately in beads, scotia, thresholds and sealant. Two things move the answer more than any of that. Whether your subfloor needs skimming, because that cost lands almost entirely on the sheet side. And what changing it later costs, which never appears on either quote: sheet is replaced whole, plank is replaced plank by plank if the spare pack exists. The two calculators either side of this page answer different questions rather than the same one twice — a seam count on the sheet side, a pack count on the plank side — so take the sheet's length and roll width to a supplier for a price and run the plank's packs yourself.
- LVP says waterproof on the box — why is it not the obvious wet room floor?
- Because the claim is true about the material and silent about the assembly, and in a wet room it is the assembly that leaks. A vinyl plank genuinely does not swell, rot or delaminate when it gets wet, which is the whole reason it displaced laminate in kitchens. But a floating floor is hundreds of dry mechanical joints with a designed-in expansion gap running around the entire perimeter, and water sitting on the surface has a great many edges to sit against and one continuous open line at the wall. What it finds underneath is your subfloor, and the failure is not the plank — it is chipboard swelling or joists staying damp under an impervious lid that also stops it drying out. This is why manufacturer warranties on plank floors carry language about standing water and about bathroom use that is worth reading before you buy rather than after: some products are warranted for full bathrooms, some for splash exposure only, some are silent, and the sealant bead around the perimeter is usually a condition rather than a courtesy. The honest position is that plank handles a splashed and wiped floor comfortably, and that a floor expected to hold water while it stands there wants either a coved sheet or a tanked tile system beneath it.
- Can either go straight over the old floor?
- They fail this test in opposite ways, and it is a useful diagnostic for the whole comparison. Sheet vinyl needs smoothness rather than mere soundness, because it is thin and flexible and reproduces whatever is under it — over old tile it will find every grout line within months, and over old cushioned vinyl it will find the pattern of the layer below. So an overlay board or a smoothing compound is normal rather than exceptional, and that preparation is a real cost sitting on one side of this comparison only. A rigid plank goes over sound old tile as one of its best tricks, bridging shallow grout joints that would telegraph through a sheet — deep joints still want a skim, and any tile that is drummy or lifting has to come up regardless, because a floating floor over a moving substrate flexes at the joints. Both then meet the same two consequences of building height: doors need undercutting, and every threshold, appliance space and floor-standing fixture gains that height too. Check the gap under the door and the height of the dishwasher recess before you commit to an overlay.
- How does a WC pan, a shower tray or a run of kitchen units get dealt with?
- This is where the two floors stop being interchangeable, and it is the detail that catches out most first-time plank installations in a bathroom. Sheet vinyl is template work: it is scribed to the pan and pedestal, taken up to or under the shower tray upstand, and sealed at the line, and a fixture bolted through it changes nothing, because the covering is bonded and not trying to move. A floating plank floor is trying to move all the time, and anything screwed through it pins it in place — the expansion then has to come out somewhere else, which is why gaps open at a far wall or joints lift mid-room months after a job that looked perfect. Correct practice is to fit around a fixed pan rather than under it, to run the floor up to kitchen units rather than trapping it beneath them, and never to sit a full-height appliance or a heavy island on top of a floating floor. Manufacturers also state a maximum continuous run before an expansion break is required, which an open-plan kitchen running into a hall can quietly exceed. None of this is difficult, but all of it is decided before the first plank is laid, not during.
- Is glue-down vinyl plank the answer that splits the difference?
- Often, yes, and it deserves to be on the shortlist whenever the expansion gap is the objection rather than the look. A glue-down plank or tile is bonded to the subfloor rather than floating, which removes the perimeter gap, removes the pinning problem entirely — fixtures, units and appliances can sit on it — and makes single-unit repair the cleanest of any option on this page, because a bonded plank is warmed, lifted and replaced without disturbing its neighbours. It keeps the plank format and the wood look that brought the reader here. The honest caveats are that it inherits sheet vinyl's substrate demands rather than the floating floor's forgiveness, since a bonded thin plank telegraphs and needs a smooth, dry, properly prepared base; that it is a slower, more skilled, adhesive-based job that is not reversible on a whim; and that it still leaves an unsealed joint at every plank edge, so it is a better kitchen and laundry floor than a floating plank, not a substitute for a coved tray in a genuine wet room. If you like the plank and dislike the gap, ask about this before treating the choice as settled.
- Why does the seam count turn on the room's width rather than its area?
- Because sheet vinyl is continuous along its length and finite across its width, so joints can only ever occur in one direction — and the arithmetic is simply how many roll widths it takes to span the room, less the first one, which needs no joint to anything. That is why the calculator asks for two measurements and not three: the room dimension the roll has to span, and the width of the roll you have actually been quoted. Floor area never enters it. That makes the orientation of the roll a design decision rather than a detail: run the roll's width across the room's SHORTER dimension and a great many domestic bathrooms come out with no seam at all, while the same room measured the other way buys one for nothing. Two things the seam count does not tell you. Pattern matching, which on a patterned sheet costs extra length at every joint so the design lines up across it, and which the calculator deliberately excludes. And whether the sheet can be welded at all — a hot-welded seam needs a product with a matching welding rod, which commercial and safety grades have and cushioned domestic sheet often does not, in which case the joint is cold-welded with a seam chemical instead. If a sealed, coved floor is the reason you are choosing sheet, confirm the specific product supports both details before you order it. The seam you can avoid entirely is always the better outcome than the seam you have to make well.