How Many Pavers for an 8x16 Patio?
Pavers to buy
620 pavers
128 sq ft of patio, 4 by 8 in pavers, 6 in compacted base, 1 in bedding sand, ten percent waste.
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How that number is worked out
These are the figures this page was built with and every line the calculator produces from them. Change anything above and all of it moves.
- Patio length16 ft
- Patio width8 ft
- Paver length8 in
- Paver width4 in
- Paver thickness2.375 in
- Joint width0.0625 in
- Compacted gravel base6 in
- Bedding sand1 in
- Waste allowance10 %
Pavers to buy620 pavers
| Patio area | 128 sq ft |
|---|---|
| One paver covers | 0.227 sq ftface plus one joint |
| Pavers per sq ft | 4.4 |
| Pavers before waste | 563 |
| Base gravel, compacted | 2.37 cu yd |
| Base gravel to order | 2.84 cu yd20% added for compaction |
| Base gravel weight | 3.98 tons |
| Bedding sand | 0.4 cu yd1,067 lb |
| Polymeric sand, 50 lb bags | 264 sq ft per bag |
| Edge restraint | 48 ft |
The material list this produces
| Pavers | 620 |
|---|---|
| Base gravel, cu yd | 3 |
| Bedding sand, cu yd | 0 |
| Polymeric sand, 50 lb bags | 2 |
| Edge restraint, ft | 48 |
| Edging spikes | 48 |
| Geotextile fabric, sq ft | 141 |
Patio size compared
Eight feet across, from a patio to a walk. The paver count follows the area, but the last column follows the perimeter, which is why a long thin eight foot slab pays for so much edging.
| Patio size | Pavers to buy | Patio area | Edge restraint |
|---|---|---|---|
| 8 by 8 ft | 310 pavers | 64 sq ft | 32 ft |
| 8 by 10 ft | 387 pavers | 80 sq ft | 36 ft |
| 8 by 12 ft | 465 pavers | 96 sq ft | 40 ft |
| 8 by 16 ft | 620 pavers | 128 sq ft | 48 ft |
| 8 by 20 ft | 774 pavers | 160 sq ft | 56 ft |
What else matters here
Six hundred and twenty pavers over 128 sq ft. A patio twice as long as it is wide is usually against a house wall, and that makes the fall the important number rather than the paver count.
A paved surface has to shed water away from the building, and the usual figure is about a quarter of an inch of drop per foot of run. Over the 16 ft length of this one that is four inches of fall from the house to the far edge, which is a lot more than most people picture and it has to be built into the base rather than into the pavers. The gravel is graded to the finished fall, the bedding sand is a constant thickness screeded over it, and the pavers follow. Screeding the sand thicker at one end to make up a slope is the classic mistake and it settles out within a year.
The second thing a long narrow shape costs is edging. This patio needs 48 ft of edge restraint for its 128 sq ft, while a square patio of almost the same area needs about 45. Not a large penalty at this size, but it grows with the aspect ratio, and a 400 sq ft patio pays 80 ft as a square and 116 ft as a 50 by 8 strip.
What this calculator assumes
- The joint default is 1/16 of an inch because concrete pavers are cast with spacer nubs on the sides and that is the joint you get when they are set tight. A hand set joint at 1/8 or wider takes noticeably more polymeric sand, so type the joint you are actually laying.
- Waste is 5 percent for a running bond laid square to the edges, 10 for most patios, and 15 or more for herringbone or a circle kit, because every angled cut throws away most of a paver.
- Base gravel is quoted compacted. Crushed stone loses about a fifth of its loose volume under a plate compactor, so the order line adds 20 percent back.
- Four inches of compacted base suits a foot traffic patio on good soil. Six is the common default, and eight to twelve is driveway and heavy clay territory.
- Polymeric sand is the volume of the joints at the full thickness of the paver, at about 100 pounds per cubic foot.
- Weights use 2,800 lb per cubic yard for crushed stone and 2,700 for bedding sand.
Questions people ask
How many pavers for an 8x16 patio?
620 pavers at 4 by 8 in over 128 sq ft, with a ten percent waste allowance.
How much slope does a paver patio need?
About a quarter of an inch per foot, running away from the building. Over a 16 ft patio that is four inches of fall.
Should the slope be in the sand or the base?
The base. The bedding sand is screeded at a constant thickness over a graded base. Building the fall by screeding the sand thicker at one end settles out within a year.
The paver calculator takes any dimensions you like and hands back the same list.