Paving slabs per square metre: how to order enough and not come up short
How many paving slabs per square metre in the UAE: coverage for 600x600 and 400x400 slabs, the cutting waste that leaves orders short, and cost per m2.
The order that goes wrong is almost never the field. It is the edge. A crew lays out a courtyard, the full slabs across the middle go down fast and clean, and then the last row against the wall needs cutting, and every one of those cut slabs leaves half a slab in the skip. Two rows from finished, the pallet is empty, and the yard cannot deliver again until tomorrow.
Nine times out of ten that came from a quantity worked out as area divided by slab size, with nothing added for the border. So here is the manufacturer’s version: how many paving slabs a square metre actually takes, why the edge quietly eats into the pallet, and how to order once and lay it out complete.
How many paving slabs per square metre?
For a 600 x 600 mm slab, count about 2.8 slabs per square metre. For a 400 x 400 mm slab, it is 6.25 per square metre. Start every takeoff from the figure that matches your size.
The maths is just the slab face. A 600 x 600 slab covers 0.36 square metres, so one square metre needs 1 ÷ 0.36 = 2.78 slabs. A 400 x 400 slab covers 0.16 square metres, giving 1 ÷ 0.16 = 6.25 slabs. Those are the two standard sizes we press to Dubai Municipality’s DMS 001 Part 4: 2020, the same precast-flag family covered by BS 7263, at 50 mm and 40 mm thick and over 35 MPa.
Does the joint or the border change the count?
The joint barely moves it; the border is what costs you. Hydraulic pressed slabs are laid tight, so the 2 to 3 mm joint between them is nothing like the 10 mm mortar bed a block sits in. It changes the count by a rounding error, not a row.
The real driver is cutting waste at every edge. On a rectangle laid square, only the perimeter row needs trimming, and much of the perimeter falls on full slabs anyway. Put a border course around the area, or run the field on a 45-degree diagonal, and now you are cutting a large slab on almost every edge. And because a 600 x 600 is big, a slab cut to fit a 300 mm gap throws the other 300 mm away. That is the difference between a paving takeoff and a block takeoff: with blocks the joint eats the number, with slabs the offcut does.
600 x 600 or 400 x 400: which size orders better?
Neither is cheaper by much per square metre, because a bigger slab costs more each but you need fewer of them, so the supply cost lands close either way. The size choice is really about the shape of the area and how much each cut wastes.
| Slab size | Slabs per m² | Face area | Lays fastest on | Cutting waste |
|---|---|---|---|---|
| 600 x 600 mm | ~2.8 | 0.36 m² | Open runs, walkways, roofs | Higher per cut (big offcuts) |
| 400 x 400 mm | 6.25 | 0.16 m² | Small, busy, or curved areas | Lower per cut (smaller offcuts) |
On a long, open walkway or a podium deck, the 600 x 600 wins: fewer units, fewer joints, quicker to lay, and the field is nearly all full slabs. On a tight villa courtyard with planters, steps, and a curved edge, the 400 x 400 often works out better despite the higher slab count, because each cut throws away a smaller piece and the layout tolerates the smaller module. We press both to the same DCL certification, so the decision is layout, not quality.
How much wastage should you add before ordering?
Add a wastage allowance on top of the nominal count, and add more for slabs than you would for blocks, because the offcuts are bigger. No paved area uses whole slabs all the way to the wall.
- Plain rectangle, laid square — add about 5%. A simple walkway or a square roof deck sits here.
- Border, edge detail, or a few obstacles — add 10%. Most villa courtyards and driveways land here once there is a contrasting border course.
- Curves, circles, or a 45-degree diagonal lay — up to 15%, because you are cutting nearly every edge slab and losing a real chunk of each.
The allowance is cheap insurance. On slabs at a few tens of dirhams each, 10% on a courtyard is a rounding error against a half-day stoppage and a second delivery run that may not colour-match the first batch.
Worked example: a villa courtyard
Take a 5 m x 8 m courtyard, 40 square metres, laid in 600 x 600 slabs with a single border course around the edge.
| Step | Figure |
|---|---|
| Paved area | 5 m x 8 m = 40 m² |
| Nominal slabs (x 2.8) | ~112 |
| Add 10% for the border | ~123 slabs |
That is the number I would put on the order: one figure, delivered complete on a crane-offloadable pallet, with the border cuts already allowed for. Round up to the nearest full pallet rather than shaving it, because the yard ships in pallet lots anyway and the spare slabs cover a cracked unit later.
What do paving slabs cost per square metre in the UAE?
On the slabs alone, the maths is quick. Our hydraulic pressed slabs run roughly AED 20 to AED 38 each, moving with size and thickness. At about 2.8 slabs to the square metre for 600 x 600, the slabs land somewhere around AED 55 to AED 105 per square metre, with the larger, thicker 600 x 600 x 50 units toward the top of that band.
That is supply only. The bedding (a compacted sub-base and a sand or mortar setting layer) plus edge restraint and laying labour all stack on top, and the delivery emirate moves the figure, because a sequenced drop into Fujairah or Al Ain is not the logistics of a Dubai yard. If the area is going to carry vehicles, the base matters more than the slab, which is why we walk through it separately in our paving slab base preparation guide.
How to order paving so it arrives complete
Give us three things and the quantity takes care of itself: the paved area (or the length and width), the slab size and thickness the drawing calls for, and whether the layout has a border, curve, or diagonal that pushes up the cutting waste. Tell us the delivery emirate and your date, and we size the order, slabs plus a sensible wastage allowance, so it lands in full on one delivery.
For the spec side of the decision (DCL approval, thickness, and finishes), start at our hydraulic paving slab selection guide, and the full product detail sits on our paving slab page.
Frequently asked questions
How many paving slabs are there in one square metre? About 2.8 for a 600 x 600 mm slab and 6.25 for a 400 x 400 mm slab, before you allow for cutting at borders. The tight joint between hydraulic pressed slabs barely moves the count.
How much wastage should I add to a paving slab order? Around 5% on a plain rectangle, 10% with a border or a few obstacles, and up to 15% on curves or a diagonal lay. Big slabs waste more per cut than small blocks.
Do 600 x 600 or 400 x 400 slabs work out cheaper per square metre? They land close on supply cost, because a bigger slab costs more each but you need fewer. Choose 600 x 600 for open areas and 400 x 400 for small, busy, or curved ones.
How do I calculate paving slabs for a courtyard or patio? Net area in square metres times the coverage figure (about 2.8 for 600 x 600, 6.25 for 400 x 400), then add wastage. A 40 m² courtyard in 600 x 600 is roughly 112 slabs nominal, about 123 with 10% added.
How much do paving slabs cost per square metre in the UAE? Roughly AED 55 to AED 105 per square metre for 600 x 600 slabs alone, from a per-slab range of about AED 20 to AED 38. Bedding, edge restraint, and labour are extra.
The paving order that lands short almost always died at the border. On big 600x600 slabs the cuts around edges and curves waste more than people budget for — allow 10%, not 5%, the moment the job has a border or a curve, and order once.
Get a paving quantity and quote in one go
Send us the paved area, the slab size and thickness, whether there is a border or a curve, the delivery emirate, and your dates. We will come back with the slab count, a wastage allowance built in, and a supply-and-delivery price, so it arrives on one pallet run, not two.
