AsphaltTons.com — asphalt tonnage calculator

Pea Gravel Patio: How to Build One and What It Costs

A pea gravel patio is one of the least expensive ways to create an outdoor sitting area. Small rounded stones, usually 3/8 inch, drain instantly, crunch pleasantly underfoot, and can be installed in a weekend. The trade-offs are that pea gravel shifts, can scatter into lawns, and is not ideal for furniture with thin legs or for wheelchairs. A firm base and solid edging make a big difference.

Volume and tonnage calculator →

Materials

ItemPurpose
Edging (steel, stone, pavers, timbers)Holds gravel in place
Landscape fabricReduces weeds and mixing with soil
Crushed stone base or paver baseFirm, compacted foundation
Pea gravelTop surface
Optional gravel stabilizer gridKeeps stones from shifting

How to build it

  1. Mark the outline and call 811 if digging deeply.
  2. Excavate about 4 to 6 inches, removing sod and roots.
  3. Level and compact the soil, sloping slightly away from the house.
  4. Install edging firmly, keeping its top slightly above the finished gravel.
  5. Lay landscape fabric, overlapping seams.
  6. Add 2 to 3 inches of crushed stone base and compact it. See how to compact gravel without a compactor.
  7. Spread 2 inches of pea gravel. Deeper pea gravel feels soft and unstable.
  8. Rake level and water lightly to settle dust.

How much pea gravel?

At 2 inches deep, one cubic yard of pea gravel covers about 162 square feet. A ton is roughly 0.7 cubic yards and covers about 110 to 120 square feet at 2 inches.

Patio sizeAreaPea gravel at 2 inches
10 × 10 ft100 sq ftAbout 0.6 cubic yards
12 × 12 ft144 sq ftAbout 0.9 cubic yards
12 × 16 ft192 sq ftAbout 1.2 cubic yards
16 × 20 ft320 sq ftAbout 2 cubic yards

Cost factors

Pea gravel is generally inexpensive per ton, so edging, base, and delivery are often a large part of the cost. DIY installation keeps a pea gravel patio far cheaper than concrete, pavers, or asphalt. See asphalt patio for a paved alternative.

Making it more stable

  • Stabilizer grids: honeycomb panels hold stones in cells.
  • Pea gravel over compacted base, not loose soil.
  • Wide feet on furniture or set pavers under chair legs and table feet.
  • Stepping stones set into the gravel for paths.

Maintenance

  • Rake occasionally to level.
  • Top up every few years as stones scatter or sink.
  • Pull weeds early or use a leaf blower to clear debris.
  • Keep edging tight.

Pea gravel vs crushed stone patio

Crushed stone fines or decomposed granite pack firmer than pea gravel and are better for furniture. Pea gravel drains better and looks softer. See crushed stone vs gravel.

Bottom line

A pea gravel patio is affordable and drains well. Excavate 4 to 6 inches, install strong edging and fabric, compact a crushed stone base, then add about 2 inches of pea gravel. Use stabilizer grids or pavers under furniture for a firmer feel.

Questions people ask

How deep should pea gravel be for a patio?

About 2 inches over a compacted crushed stone base.

Do I need a base under a pea gravel patio?

A compacted base keeps the surface firmer and reduces sinking.

How much pea gravel do I need for a 12x12 patio?

About 0.9 cubic yards at 2 inches.

Is pea gravel good for patio furniture?

It shifts under thin legs. Use wide feet, pavers, or a stabilizer grid.

How do I keep pea gravel in place?

Install solid edging and consider a stabilizer grid.

Related guides

Open the volume and tonnage calculator → Asphalt tonnage calculator →

As an Amazon Associate, AsphaltTons.com earns from qualifying purchases. Product links below are sponsored.