How to calculate how much vinyl flooring you need
Posted On: sep 17, 2026
Categories: Installation guides
556 Views
0 Liked
0 Comment
star_border star_border star_border star_border star_border (0)
A miscalculation is expensive in both directions. Order too little and you have to top up from another batch, where the shade will not match. Order too much and the money sits in your storeroom. Here is how to get the figure right.
Step 1. The area
Measure to the maximum dimensions, including alcoves, bay windows and door openings. Openings do count: the flooring runs into them.
Break a complex shape into rectangles and add them up.
Nothing that merely stands on the floor and can be moved is deducted from the area. Only structural elements are deducted: columns, service shafts and built-in ducts.
For a van or campervan this calculation changes: wheel arches and curved edges make the cutting plan trickier. We cover it in detail in «how much flooring a van needs».
Step 2. Cutting allowance
This is not a "just in case" figure but a calculated one: some of the material inevitably ends up as offcuts.
| Layout | Allowance |
|---|---|
| Straight, simple rectangular room | 5% |
| Straight, complex-shaped room or many openings | 7–8% |
| 45° diagonal | 10–12% |
| Herringbone, chevron | 12–15% |
| Sheet vinyl, room wider than 2 m | 8–10% |
| Sheet vinyl with a directional pattern | 10–15% |
Add 2–3 m² on top of the calculation to keep in storage. Years later, if the floor is damaged in one spot, that reserve is the difference between replacing a single plank and relaying the whole room: a batch shade is never repeated.
Step 3. Converting to packs
The material is sold in packs, not by the metre. Always round up.
Our packs:
| Material | Per pack | Area | Weight |
|---|---|---|---|
| LVT 2.0 mm, class 32 | 18 planks | 2.835 m² | 8.56 kg |
| LVT 2.5 mm, class 33 | 14 planks | 2.205 m² | 8.75 kg |
Plank size 150 × 1050 mm.
Formula: (area × allowance factor) ÷ pack area, rounded up.
Worked examples for planks
Living room 4 × 5 m, straight layout, LVT 2 mm
- Area: 20 m²
- 5% allowance: 21 m²
- Packs: 21 ÷ 2.835 = 7.4 → 8 packs (22.68 m²)
- The 1.68 m² left over is exactly the reserve for the storeroom
Flat of 90 m², straight layout, LVT 2 mm
- 5% allowance: 94.5 m²
- Packs: 94.5 ÷ 2.835 = 33.3 → 34 packs (96.4 m²)
Living room 30 m², herringbone, LVT 2.5 mm
- 13% allowance: 33.9 m²
- Packs: 33.9 ÷ 2.205 = 15.4 → 16 packs (35.3 m²)
Over 30 m², the difference between a straight layout and herringbone is about 2 packs. Worth factoring in before you settle on the pattern.
Calculating sheet vinyl
Here you work out not the area but the sheet layout, and that is what drives the waste.
Our roll: 2 m wide, 30 linear metres long, 60 m² of flooring.
Procedure:
- Decide which way the sheets will run. Usually along the longer wall — that means fewer seams.
- Number of sheets = room width ÷ 2 m, rounded up.
- Length of each sheet = room length + 10–20 cm for fitting.
- Total length = number of sheets × sheet length.
- Area = total length × 2 m.
An example where direction decides everything. A room of 5 × 8 m, net area 40 m².
Option A — sheets running along the eight-metre side: 5 ÷ 2 = 2.5 → 3 sheets of 8.2 m = 24.6 linear m = 49.2 m²
Option B — sheets running along the five-metre side: 8 ÷ 2 = 4 sheets of 5.2 m = 20.8 linear m = 41.6 m²
The difference is 7.6 m², close to €100 at a price of €12.99/m². Option B, however, has more seams (3 against 2), which matters if they have to be heat-welded.
The takeaway: work out the layout before ordering, weighing material consumption against the number of seams.
Welding rod
Needed for sheet vinyl in wet areas and hygiene-critical spaces.
Calculation: the total length of all seams + the room perimeter if the flooring is coved up the wall.
Example: a 100 m² hall, sheets 2 m wide and 10 m long → 5 sheets, 4 seams of 10 m = 40 linear m. Plus the perimeter where a coved skirting is used.
The rod: €0.99 per linear metre, 90 m coil.
Skirting and profiles
Skirting: room perimeter − width of door openings + 10% for cuts and corners. A 90 m² flat usually works out at around 75 linear metres.
Profiles: according to the number of door openings and transitions to other floor coverings.
Adhesive and primer
Adhesive: 0.3–0.4 kg/m². For 90 m², about 32 kg. Primer: 0.1–0.2 kg/m² on absorbent substrates, 0.2–0.35 kg/m² on ceramic. Self-levelling compound, where required: 1.5–1.7 kg/m² per millimetre of thickness.
More detail in the article on ancillary materials.
Five calculation mistakes
- Working from the net area with no allowance. You are guaranteed to run short.
- Ignoring the layout. Herringbone eats 8–10% more than a straight layout.
- Not working out the sheet layout for a roll. Up to 20% wasted for no reason at all.
- Rounding packs down. Nobody sells half a pack.
- Not setting aside a repair reserve. The batch shade will not come back.
If you would rather not do the maths
Send us the room dimensions, the layout type and the material you have chosen — we will calculate the number of packs or linear metres, find the best sheet direction and give you a material quote.
Prices and specifications: glue-down LVT, sheet vinyl, welding rod.
FAQ
How many square metres are there in a pack of vinyl flooring? 2.835 m² in a 2 mm LVT pack (18 planks) and 2.205 m² in a 2.5 mm pack (14 planks).
How many metres are there in a roll? 30 linear metres at a width of 2 m, that is 60 m² of flooring.
What allowance should I plan for? 5% for a straight layout, 10–12% for a diagonal, 12–15% for herringbone. Plus 2–3 m² for future repairs.
Can I buy the roll cut to length? Yes, by the linear metre. Each linear metre gives 2 m² of flooring. Send us the room dimensions and we will work out the layout.
Do door openings count? Yes, the flooring runs into them. Only structural elements are deducted from the area.
What if I run out of material? Top up from the same batch while it is still available. A different batch will differ in shade — which is why the allowance is planned from the start.