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Paver Patio Base: Concrete Slab vs. Compacted Aggregate in NYC

For a 20×25-foot interlocking paver patio in NYC: compacted aggregate base (3–6 inches crushed stone + 1 inch sand) suffices for pedestrian use on stable, well-drained soil. Use concrete slab only if: frost heave history, poor drainage, or heavy vehicle loads. Aggregate allows flexibility; concrete risks reflective cracking.

Without site soil data, aggregate is the standard residential choice. Ensure proper compaction (plate compactor), edge restraints, and joint sand stabilization.

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