Exposed aggregate concrete costs $8–$18 per square foot installed in Indiana and Ohio in 2026. The exact price you’ll pay depends on the type of aggregate, the size of the surface, the base preparation required, and whether demolition is necessary. A standard two-car driveway (about 400–500 square feet) typically costs $3,200–$9,000. Mattingly Concrete has installed exposed aggregate driveways, patios, and walkways across Central Indiana and the Cincinnati area for over 35 years. In this article, we share what pushes costs up or down.
You’re walking past a neighbor’s driveway and something about it catches your eye. It doesn’t have the flat, uniform look of standard poured concrete—there’s texture, depth, small rounded stones visible just beneath the surface. Your neighbor tells you it’s exposed aggregate, and that it’s been there twelve years without a single resurfacing. Most of our customer conversations start exactly that way, and the first question is almost always the same: what is it, and how much does it cost?
What Is Exposed Aggregate Concrete?
Exposed aggregate concrete starts as a standard concrete pour. The difference comes during the finishing step. Before the surface fully hardens, a retarder (a chemical that slows surface curing) is applied, and the top layer is washed and brushed away to reveal the aggregate (gravel, crushed stone, or decorative pebbles) embedded in the mix. The result is a textured, slip-resistant surface with natural visual interest that plain concrete can’t match.
The aggregate itself creates differences in pricing. Standard river rock or crushed gravel, which is what most Indiana driveways use, is at the lower end of the range. Decorative aggregates (quartz, basalt, sea glass, or colored stone) add $2 to $6 per square foot to material costs.
The stone you choose also affects how the surface performs in freeze-thaw cycles. Rounded river gravel bonds differently than angular crushed stone. In Indiana winters, that distinction matters. Angular aggregates tend to hold their position in the matrix more securely through repeated freezing and thawing.
Cost Breakdown by Project Type
The project’s size and type affect exposed aggregate pricing significantly, and not always in the direction homeowners expect.
Driveways
A single-car driveway (200–250 sq ft) typically runs $1,600–$4,500. A standard two-car driveway (400–600 sq ft) ranges $3,200–$10,800. The wider price range reflects aggregate choice, site access, and base preparation requirements. For a detailed comparison of driveway material costs, our post on concrete driveway costs explains how the type of finish and square footage influence typical residential projects in Indiana.
Patios
A 300-square-foot exposed aggregate patio runs $2,400–$5,400 when installed. Patios adjacent to pools or on sloped sites cost more because of additional drainage work and complexity.
Walkways and Entries
Walkways and entries are smaller but require more detailed work. Exposed aggregate walkways average $10–$16 per square foot because of the tighter forming work required on narrow surfaces.
Demolition
Demolition adds $1–$2 per square foot if an existing slab needs to be removed. On a two-car driveway, that’s $400–$900 added to the project.
Local Factors That Affect Exposed Aggregate Costs in Indiana
Indiana’s clay soils, freeze-thaw winters, and older housing create cost variables that don’t show up in national price estimates. Here’s what to expect locally.
Amount of Subbase Preparation
Indiana’s clay-heavy soils require more subbase preparation than regions with stable sandy or rocky ground. A standard exposed aggregate driveway installation includes 4 to 6 inches of compacted gravel base on top of the native soil. In neighborhoods built before the 1980s, the removal of old concrete sometimes reveals inadequate bases that need to be corrected before the new slab goes in.
Concrete Reinforcement
Rebar and wire mesh reinforcement are standard in quality installations. Without reinforcement, poured concrete in Indiana’s freeze-thaw climate tends to develop structural cracks much sooner than reinforced slabs, making them a structural necessity. The cost of repair typically exceeds what the reinforcement would have added upfront.
Regional Applications
For homeowners in the Cincinnati area, exposed aggregate is a popular choice for pool decks and backyard patios because the textured surface remains slip-resistant when wet. It’s also compatible with stamped concrete. Many projects use a stamped concrete border with an exposed aggregate field for visual contrast.
Maintenance
Maintenance is straightforward: sealing every 2 to 3 years protects the surface color and prevents the aggregate from coming loose. A quality penetrating sealer runs $0.50–$1.50 per square foot to apply. Skipping sealant allows the cement paste matrix to weather, which eventually loosens the aggregate and creates rough spots.
Frequently Asked Questions
How does exposed aggregate hold up in Indiana winters?
Exposed aggregate holds up well in Indiana winters when properly sealed and installed with the right kind of aggregate. Rounded river gravel and angular crushed stone both perform reliably in freeze-thaw conditions if the concrete was mixed and cured correctly. Annual resealing before winter reduces moisture penetration, which is the primary cause of surface damage over time.
Is exposed aggregate more slippery than plain concrete?
Exposed aggregate is actually less slippery than smooth-finished concrete when wet. The texture created by the aggregate surface provides natural grip underfoot, which is why it’s frequently chosen for pool decks, walkways, and front entry steps. Over time, if the surface sealer builds up without stripping, it can reduce traction. Routine stripping and resealing prevents this.
Can exposed aggregate be matched to existing concrete on a property?
Achieving an exact match between the aggregate and existing concrete is difficult since the availability of the aggregate and variations in concrete mix affect the finished appearance. Mattingly Concrete works with homeowners to select aggregate that complements existing surfaces. In many cases, a decorative border or transition strip makes the connection between old and new surfaces look intentional rather than mismatched.
Start With the Right Surface for Your Project
Exposed aggregate delivers what plain concrete can’t: texture, slip resistance, and visual character at a price that fits most residential budgets. Deciding on the type of aggregate, amount of base preparation, and reinforcement is critical since those choices will determine how that surface performs a decade from now.
If you’re comparing exposed aggregate to stamped concrete or standard broom finish, view Mattingly Concrete’s exposed aggregate options and then contact us for a free estimate. We’ll assess your site, take you through your finish options, and give you a detailed quote based on your actual project.
