Laminate for a 5 × 4 m room, by waste allowance
The floor is 20 m². How much extra you buy depends on the layout: a straight lay in a plain rectangle wastes less than a diagonal lay or a room with lots of cuts. The last column is the area you will actually pay for, in whole packs of 2.22 m².
| Waste allowance | Flooring needed (m²) | Packs | m² you buy |
|---|---|---|---|
| 5% | 21.00 | 10 | 22.20 |
| 8% | 21.60 | 10 | 22.20 |
| 10% | 22.00 | 10 | 22.20 |
| 15% | 23.00 | 11 | 24.42 |
If your packs cover a different area
Packs vary by brand, so use the figure printed on yours. At 10% waste:
| Coverage per pack | Packs | m² you buy |
|---|---|---|
| 1.73 m² | 13 | 22.49 |
| 2.00 m² | 11 | 22.00 |
| 2.22 m² | 10 | 22.20 |
| 2.50 m² | 9 | 22.50 |
About a 5 × 4 m room
This size is typical of a living room or large bedroom. You also need underlay (2 rolls of 15 m²), about 17.2 m of beading or scotia, and an expansion gap of about 10 mm around the walls. The skirting board calculator and the carpet calculator are useful if you are changing the rest of the room.
Want to change anything else? The calculator above is the full Laminate Flooring Calculator (UK): edit any number and the results update instantly.
Tools & materials for this project
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Frequently asked questions
How much laminate flooring do I need for a 5m x 4m room?
A 5 × 4 m room is 20 m². With 10% for cuts you need 22.00 m², which is 10 packs if each pack covers 2.22 m². With a simple straight layout (5% waste) you may get away with 10 packs.
How much underlay for a 5m x 4m room?
The floor is 20 m², so you need 2 rolls of 15 m² underlay. If the planks have a pad attached you can skip it.
How much beading or scotia for a 5m x 4m room?
The perimeter is 18 m. With one doorway taken off at 0.8 m you need about 17.2 m of beading or scotia, so buy a little extra for the mitres.
Related sizes and guides
Related sizes
Estimates only. Results assume standard materials and simple shapes. Supplier products vary, and the final call on quantity, structure and safety is yours. Check your local code and your supplier's guidance before ordering.