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How Much Paver Base for a 15x15 Patio?

How much paver base for a 15x15 patio: about 3.9 tons at 4 inches compacted, or 5.8 tons at 6 inches. The patio is 225 square feet.

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Paver base by depth

Base depthCubic yardsTons0.5 cu ft bags
4 in2.783.9150
5 in3.474.9188
6 in4.175.8225
8 in5.567.8300

Tons use about 1.4 tons per cubic yard. Bag counts assume 0.5 cubic foot bags, a common size for bagged paver base; check yours.

4 or 6 inches?

Patios that only see foot traffic usually get 4 inches. Clay soil, poor drainage and cold winters call for 6 inches. Driveways need much more. See how deep paver base should be.

Buying base

At 4 inches this is about 150 small bags, which is a lot of lifting. Bulk paver base or crushed stone with fines (often sold as crusher run, road base or 3/4 minus) costs far less per ton.

Compaction

Spread the base in 2 to 3 inch lifts, dampen it and run a plate compactor over each lift. Slope the base about 1/8 to 1/4 inch per foot away from the house. Then screed 1 inch of bedding sand on top.

Common mistakes

Skimping on base depth, skipping compaction and using too much bedding sand are the most common errors. Thick sand shifts and causes dips. Another is forgetting edge restraint, which lets pavers creep outward over time.

Ordering materials

Pavers often come by the pallet, and a pallet’s coverage is printed on the product sheet. Order base and sand at the same time to save delivery fees. Keep a few extra pavers from the same batch for future repairs, since color can vary between batches.

Measuring the patio

Lay out the patio with stakes and string, square it with the 3-4-5 method and measure. Measure out to the edge restraint, since base should extend a few inches beyond the pavers on each side.

Questions people ask

How many tons of paver base for a 15x15 patio?

About 3.9 tons at 4 inches or 5.8 at 6 inches.

How many bags of paver base for a 15x15 patio?

About 150 half-cubic-foot bags at 4 inches.

How thick should paver base be?

About 4 inches for patios, 6 or more for clay or cold climates.

What can I use as paver base?

Crushed stone with fines, such as 3/4 minus, crusher run or road base.

How much sand goes under pavers?

About 1 inch of bedding sand over the compacted base.

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