How Much Sand for a Paver Patio: Base, Bedding, and Polymeric Sand by Area
A 200 sq ft paver patio needs approximately 0.6 cubic yards of bedding sand (1-inch layer) plus about 3.7 cubic yards of compacted base material at 6-inch depth. Polymeric sand for joints runs 1 bag (50 lbs) per 35 to 50 sq ft depending on paver size and joint width. The most common paver patio sand mistake is using too much bedding sand; the correct depth is exactly 1 inch of coarse concrete sand after the base is compacted.
Sand is the most misunderstood component of a paver installation. Most homeowners think of sand as the base when it is actually the bedding layer: a thin, precise 1-inch course on top of the compacted aggregate base. The aggregate base does the structural work. The sand provides a consistent, level surface for the pavers to rest on. Confusing these two components leads to pavements that sink, tip, and fail within a few seasons.
The gravel calculator gives you tons and yards of compacted base material for any patio area and depth.
Open the Gravel Calculator →The Two Layers: Compacted Base and Bedding Sand
Layer 1: Compacted aggregate base (4 to 8 inches)
Crushed limestone, #21A, or equivalent compactable aggregate spread in 2 to 3-inch lifts and compacted with a plate compactor. This is the structural layer that prevents settling. Standard residential patio: 4-inch base. Driveway or vehicle traffic: 6 to 8 inches. Without a properly compacted base, pavers will settle unevenly within 1 to 3 years regardless of how well the bedding sand is leveled.
Layer 2: Bedding sand (exactly 1 inch)
Coarse concrete sand (ASTM C33) screeded to exactly 1 inch of depth using screed rails. This layer is NOT compacted before paver installation; the weight and vibration of paver installation settles it. After all pavers are placed and before polymeric sand is applied, the pavers are compacted with a plate compactor fitted with a rubber pad, which seats the pavers into the bedding sand uniformly. The bedding sand must be exactly 1 inch: too thick and pavers flex; too thin and the base shows through gaps.
Sand and Base Quantities by Patio Size
| Patio size | Base (6-in, cu yd) | Bedding sand (1-in, cu yd) | Polymeric sand (bags) |
|---|---|---|---|
| 100 sq ft | 1.9 cu yd | 0.3 cu yd | 2 to 3 bags |
| 200 sq ft | 3.7 cu yd | 0.6 cu yd | 4 to 6 bags |
| 300 sq ft | 5.6 cu yd | 0.9 cu yd | 6 to 9 bags |
| 400 sq ft | 7.4 cu yd | 1.2 cu yd | 8 to 12 bags |
| 600 sq ft | 11.1 cu yd | 1.9 cu yd | 12 to 18 bags |
| 1,000 sq ft | 18.5 cu yd | 3.1 cu yd | 20 to 30 bags |
The base material is the large quantity: for a 300 sq ft patio, you need 5.6 yards of compacted aggregate versus only 0.9 yards of bedding sand. This ratio surprises many first-time paver installers. For base aggregate pricing in your region, our gravel cost guide covers bulk aggregate pricing per ton. For the drainage infrastructure under a new patio, our guide on french drain mistakes covers the drainage that prevents heaving in areas with high groundwater.
Polymeric Sand Coverage and Application
Polymeric sand is a joint sand with polymer binders that harden when activated with water, locking pavers in place and resisting weed growth, ant intrusion, and washout. Coverage is approximately 35 to 50 square feet per 50-pound bag for standard 4×8-inch pavers with 1/8-inch joints. Apply in dry weather above 50 degrees Fahrenheit. Wet the joints in two stages per product instructions; premature or excessive watering before the sand is fully seated causes hazing on the paver face.
Which Sand to Use: The Short List
Use coarse concrete sand (ASTM C33) for bedding. Do not use: mason sand (too fine), play sand (rounded grains compact poorly), or polymeric sand as bedding (wrong application). For joints: polymeric sand is strongly preferred over regular sand because regular joint sand washes out, allows weeds, and requires annual refilling. The higher cost of polymeric sand pays for itself in eliminated maintenance within 2 to 3 years.
Three Real Paver Patio Projects
Example 1: 400 sq ft backyard patio in Nashville, Tennessee
A homeowner building a 400 sq ft concrete paver patio at 6-inch base, 1-inch bedding sand. Base material (#21A): 7.4 yards at $28/yard = $207. Bedding sand: 1.2 yards at $35/yard = $42. Polymeric sand: 10 bags at $22 = $220. Total sand and base materials: $469. Pavers: $1,200 for 400 sq ft at $3 per sq ft. Complete DIY material cost: $1,669. Professional installation would have added $1,200 to $2,400 in labor.
Example 2: 180 sq ft front walkway in Portland, Oregon
A homeowner installing a 3-foot wide by 60-foot long walkway (180 sq ft) of tumbled concrete pavers. Portland’s clay soil required 8-inch base for freeze-thaw mitigation. Base: 4.4 yards of crushed basalt at $45/yard = $198. Bedding sand: 0.56 yards = $22. Polymeric sand: 5 bags at $24 = $120. Total: $340. The Portland installer also added a 4-inch perforated pipe at the base edge to manage clay soil drainage.
Example 3: 600 sq ft pool surround in Phoenix, Arizona
A homeowner paving a 600 sq ft pool surround with travertine pavers on a 4-inch base (Phoenix’s dry stable soil needs less base depth). Base: 7.4 yards at $32/yard = $237. Bedding sand: 1.9 yards = $66. Travertine has wider joints: polymeric sand at 30 sq ft per bag = 20 bags at $25 = $500. Total base and sand: $803. The travertine pavers cost $4,800 for 600 sq ft, making base and sand 14 percent of total material cost.
Enter patio dimensions and base depth. The gravel calculator gives you cubic yards and tons for an accurate supplier quote.
Calculate Patio Base →Frequently Asked Questions About Paver Patio Sand
How much sand do I need for a paver patio?
Bedding sand for a paver patio should be exactly 1 inch deep. For a 200 sq ft patio: 200 x (1/12) / 27 = 0.62 cubic yards of coarse concrete sand. The compacted aggregate base adds another 3 to 7 yards depending on depth and patio size. These are two separate materials with very different functions.
What type of sand should I use under pavers?
Coarse concrete sand meeting ASTM C33 specification. Not mason sand (too fine), not play sand (rounded, compacts poorly), not polymeric sand as bedding. Coarse concrete sand has angular particles that hold position under paver weight and compaction vibration, resisting the lateral movement that causes paver shifting.
How thick should the sand base be for pavers?
The bedding sand layer should be exactly 1 inch thick. The structural compacted aggregate base (separate from the sand) should be 4 to 6 inches for foot traffic and 6 to 8 inches for vehicles. Increasing the sand layer beyond 1 inch to compensate for an inadequate base is the most common DIY mistake and causes long-term paver failure.
Do I need polymeric sand or regular sand for paver joints?
Polymeric sand is strongly recommended. It resists washout, inhibits weed growth, and deters ant intrusion by hardening when activated with water. Regular joint sand washes out in rain, requires annual refilling, and allows weeds and ants. The cost difference (about $20 per 50-lb bag for polymeric vs $8 for regular sand) pays back in eliminated maintenance within 2 to 3 seasons.
How many bags of polymeric sand do I need?
Standard 4×8-inch concrete pavers with 1/8-inch joints: approximately 40 to 50 square feet per 50-pound bag. Larger format pavers (12×12 or larger) with same joint width: 50 to 65 sq ft per bag. Smaller mosaic pavers with more joint surface: 25 to 35 sq ft per bag. Always check the specific product coverage rate on the bag label.
Can I use paver sand instead of gravel for the base?
No. Sand cannot be compacted to sufficient density to support paver traffic without base failure. The compacted aggregate base provides structural support. The sand is only the leveling and bedding layer above the compacted base. Using 6 inches of sand as a base produces a patio that sinks, shifts, and develops drainage problems within one to three seasons.
How do I calculate base gravel for a paver patio?
Area in square feet x base depth in feet = cubic feet. Divide by 27 for cubic yards. One cubic yard of compacted aggregate weighs approximately 1.4 to 1.5 tons. For 300 sq ft at 6-inch base: 300 x 0.5 / 27 = 5.56 yards = 7.8 to 8.3 tons. Add 10 percent for compaction factor and uneven excavation.
How long do paver patios last?
A properly installed paver patio with adequate compacted base, correct bedding sand depth, and polymeric joint sand lasts 20 to 40 years or longer. The pavers themselves are essentially permanent; the bedding and polymeric sand may need refreshing every 10 to 15 years. Insufficient base compaction causes settling and tipping within 5 to 10 years, requiring full paver removal, base correction, and reinstallation.
Related Calculators and Guides
For paver installation specifications, the Interlocking Concrete Pavement Institute (ICPI) is the authoritative US industry standard for concrete paver design, base requirements, and installation best practices for both residential and commercial applications.