What Is Paver Base? Sand, Gravel, and Which to Use

“Paver base” is one of the most overloaded terms in outdoor construction, used loosely to describe two completely different components of a paver installation. At home improvement stores, it often refers to a bagged compactable aggregate product. In installation guides, it sometimes refers to the sand bedding layer. In professional construction, it typically refers to the compacted crushed stone sub-base. Using the wrong product in the wrong layer — because the terminology led you to the wrong product — is one of the most common and most correctable mistakes in a patio project. This page clarifies exactly what each layer is, what belongs in it, and where the term “paver base” applies.

The Two Things Called “Paver Base”

Meaning 1: The Compacted Aggregate Base Layer

In most professional and technical paver installation contexts, “base” or “paver base” refers to the structural layer of compacted crushed stone or processed gravel that provides the load-bearing foundation for the paver surface. This layer — typically 4 to 6 inches of compacted crusher run, MOT Type 1, or clean compacted gravel — is the most structurally important component of the installation. It distributes loads from the paver surface down to the native sub-grade, provides drainage away from the installation, and establishes the stable, level reference plane that the sand bedding layer and pavers sit on.

The crushed stone base layer is not sand and cannot be replaced with sand. Using sand at this depth produces an unstable, compressible foundation that allows pavers to settle and tip.

For the full specification of the crushed stone base layer, including appropriate materials and depth by application, see our crusher run as a base layer guide.

Meaning 2: The Sand Bedding Layer

In common retail and homeowner usage, “paver sand” or “paver base” is sometimes used to describe the thin sand layer placed directly beneath the pavers. This layer — 1 inch of screeded mason sand or concrete sand — is a leveling and seating medium, not a structural base. It sits on top of the compacted aggregate base and provides the final adjustable surface on which pavers are set to precise height and level.

This is the layer where mason sand belongs. It is not the thick crushed stone layer, and it cannot compensate for an inadequate crushed stone base beneath it.

What Is Sold as “Paver Base” at Home Improvement Stores?

Products labeled “paver base” or “paver base material” at retailers like Home Depot and Lowe’s are typically a bagged compactable aggregate — a dense-graded crushed stone product similar to crusher run — intended for use as the compacted aggregate base layer. These products are correct for the lower structural base layer. They are not sand, and they are not the bedding layer.

The same stores sell separate products labeled “paver sand,” “leveling sand,” or “bedding sand” that are fine sand products intended for the 1-inch bedding layer on top of the compacted base. These are the bedding products. Do not use the bagged “paver base” aggregate as the bedding layer, and do not use the sand as the structural base.

The Complete Paver Installation Layering Sequence

Understanding the full sequence of layers removes all ambiguity about which product belongs where.

Sub-grade — the native soil beneath the installation, excavated and compacted to a stable, uniform surface. Poor or soft sub-grades require additional compaction, over-excavation and replacement, or geogrid reinforcement before any base material is placed.

Geotextile membrane — a non-woven fabric layer placed on the sub-grade surface before the aggregate base is placed. The membrane separates the sub-grade soil from the crushed stone base, preventing fines from migrating upward into the base layer and maintaining the drainage performance of the base over time.

Compacted aggregate base — 4 to 6 inches of compacted crushed stone, crusher run, or MOT Type 1. This is the structural layer. Depth varies by application: 4 inches is standard for residential pedestrian patios; 6 inches is appropriate for vehicle driveways or where sub-grade conditions are poor.

1-inch sand bedding layer — screeded mason sand or concrete sand, placed and leveled immediately before pavers are set. Do not compact or wet this layer before placing pavers.

Paver surface — concrete, clay, or natural stone pavers set into the sand bedding and vibrated to final level.

Polymeric jointing sand — swept into the joints between pavers and activated with water to lock the joints.

For the complete step-by-step installation guide covering each layer in sequence, see our how to install a paver patio guide. For the specific mason sand guidance for the bedding layer, see our mason sand for pavers guide.

How to Order Materials Without Confusion

When ordering materials for a paver installation, use the layer names rather than the term “paver base” to avoid ambiguity with your supplier.

Order “crusher run,” “dense-graded aggregate,” “Type 1,” or “compacted base material” for the structural base layer. Confirm with the supplier that it is a compactable, well-graded aggregate, not a clean open-graded stone.

Order “mason sand,” “concrete sand,” or “bedding sand” for the 1-inch bedding layer. Confirm it is a fine, washed sand suitable for screeding beneath pavers.

For the quantity calculations for both the base layer and the bedding sand, the compacted aggregate quantity guide is in our crusher run quantity guide, and the bedding sand quantity guide is in our paver sand quantity guide.