Searching for aggregate concrete Annapolis, MD contractors actually recommend usually means one of two things: a decorative exposed-stone finish for a driveway or patio, or bulk gravel ordered as raw material for a concrete pour. This guide covers both, but focuses on exposed aggregate finishes, since that's what most homeowners mean when they ask about it. Here's what it costs, how it holds up through a Chesapeake winter, and what to check before you hire anyone.
"Aggregate Concrete" Has Two Meanings. Here's the Difference.
Search results for this term in Annapolis are a mix of two different industries, and that trips up a lot of homeowners.
Bulk aggregate suppliers sell crushed stone, gravel, and sand by the ton for use as sub-base material under driveways, as fill, or as a component mixed into fresh concrete before it's poured.
Decorative concrete contractors use the term differently. To them, "aggregate concrete" means exposed aggregate: a finish where the top layer of cement paste is stripped away after the pour to reveal the stones already in the mix.
If a company is quoting you by the cubic yard of raw gravel, you're talking to a materials supplier. If they're quoting a finished driveway, patio, or pool deck by the square foot, you're talking to an installer. This guide is written for the second group.
What Is Exposed Aggregate Concrete?
Exposed aggregate is standard concrete, the same sand, cement, water, and coarse stone mix used in any driveway, finished so the stone shows through instead of a smooth gray surface. Contractors reach that look one of two ways:
- Surface retarder method. A chemical is applied to the top of the wet concrete that slows curing just at the surface. Crews wash and lightly brush the top layer away once the slab firms up, exposing the stone underneath.
- Seeding method. Extra decorative stone is broadcast onto the wet surface before it sets, then worked in and later exposed the same way.
Both produce a similar textured result. The choice usually comes down to the stone size and finish a homeowner wants for their aggregate concrete Annapolis, MD project.
What Does It Cost in Annapolis?
Exposed aggregate sits between plain concrete and stamped concrete on price, and that gap is the main reason homeowners choose it. The table below reflects the ranges industry cost guides consistently report for this finish.
| Finish Type | Typical Cost (per sq. ft.) | Notes |
|---|---|---|
| Plain broom-finish concrete | $6 – $10 | Lowest upfront cost, minimal texture |
| Exposed aggregate | $8 – $16 | Price climbs with borders, premium stone, or seeded aggregate |
| Stamped concrete | $12 – $20 | More pattern options, smoother and sometimes slicker underfoot |
| Pavers / natural stone | $15 – $30+ | Highest material cost, most labor-intensive install |
A typical two-car exposed aggregate driveway in the 400 to 600 square foot range usually lands somewhere in the low-to-mid thousands installed, with final price driven by excavation needs, base prep, stone type, and border detailing. The only way to get an accurate number for your property is a local site visit. Request a free estimate and we'll walk the site before quoting anything.
Where Exposed Aggregate Works Best in Annapolis
Exposed aggregate holds up in any application where you want texture, grip, and a finished look that isn't plain gray. In Annapolis specifically, that maps onto a few common project types:
- Driveways — the slip resistance matters more here than almost anywhere else on a property, especially with a steep or sloped approach.
- Waterfront patios and decks near the Chesapeake — moisture and humidity make the extra traction worth it.
- Pool decks — the textured surface stays safer underfoot when wet than a smooth troweled slab.
- Walkways and entries — a more finished look than plain concrete without the cost of full pavers.
For homeowners outside city limits, check our Annapolis, MD service area page to confirm your neighborhood is covered, or browse full project photos on our projects page.
Why It Holds Up Through Annapolis Winters
Exposed aggregate's biggest practical advantage in this region is durability against freeze-thaw cycling, not just looks.
When water sits in a concrete slab and the temperature drops toward freezing, it expands and puts stress on the surface. Scaling is local flaking or peeling of a finished surface of hardened concrete as a result of exposure to cycles of freezing and thawing, and it generally starts as localized small patches which later may merge and extend to expose large areas , according to the National Ready Mixed Concrete Association's technical guidance on the issue. Properly air-entrained, well-cured concrete resists this; the exposed-stone surface doesn't rely on a thin paste layer the way a smooth troweled finish does, so there's less to flake off in the first place.
Maryland's frost season is a real factor here. Frost date data for the state is derived from the 1991–2020 U.S. Climate Normals from NOAA , and that same freeze-thaw window is what stresses driveways and patios every winter. A textured, well-finished exposed aggregate surface is built to take that cycling better than a bargain pour.
Exposed Aggregate vs. Stamped vs. Broom Finish
It helps to see exposed aggregate next to the two finishes homeowners compare it against most.
Broom-finish concrete costs the least and is the fastest to install, but it offers little visual interest and can get slick with algae near standing water.
Stamped concrete delivers the strongest curb appeal and can mimic brick, slate, or stone. It generally costs more to install, and the smoother stamped texture can be slipperier underfoot than exposed stone.
Exposed aggregate lands in between on price, but wins on long-term durability and slip resistance, since the grip comes from the stone itself rather than a surface pattern.
Decorative Pairings and Sealing
Exposed aggregate doesn't have to stand alone. Contractors often combine it with other decorative treatments:
- Stamped borders around an exposed aggregate field, for a framed look on a patio.
- Integral or topical staining to tint the paste a complementary color before the stone is revealed.
- Saw-cut control joints styled to match the border pattern instead of running plain.
Whichever combination you choose, sealing is non-negotiable long-term. Sealer protects the surface from staining and moisture intrusion, and reapplication timing depends heavily on exposure. A general rule of thumb is higher traffic and UV-exposed areas should receive new sealer every 2-3 years, while lighter traffic and interior areas should last 4-5 years , per the sealer guide published by the American Society of Concrete Contractors. A driveway in full sun gets resealed more often than a shaded walkway. If your existing concrete needs resurfacing before a new finish goes down, our guide on polymer concrete overlays covers a related repair option worth comparing.
What a Full Project Usually Involves
Exposed aggregate work rarely happens in isolation. A complete driveway or patio project in Annapolis typically pairs the pour with:
- Site grading and base prep — proper grading prevents the pooling and settling that cracks new concrete within a few years.
- Hardscape detailing — borders, steps, or retaining elements around the new surface.
- Walkway or patio tie-ins — connecting a new exposed aggregate entry to existing walkways so everything matches.
See our full paving contractor services page, including site grading and preparation, hardscape installation, and walkway and patio installation.
What We've Seen on Annapolis Jobs
Working driveways and patios across Anne Arundel County, the most common mistake we see isn't the finish itself, it's skipped base prep. A slab poured over soft or unprepared soil will crack regardless of how nice the exposed stone looks on day one. Ask any contractor bidding your job what base thickness and compaction they're planning before you talk finish options.
Ready to get a number for your property? Get a free estimate and we'll come look at the site in person. You can also start from our homepage to see our full range of paving and concrete work.
FAQ
What's the difference between "aggregate concrete" and regular concrete delivery?
"Aggregate concrete" as a search term covers both decorative exposed-stone finishes and bulk gravel sold for construction use. If you're after a finished driveway or patio look, you want an exposed aggregate installer, not a bulk materials supplier.
How much does exposed aggregate concrete cost in Annapolis, MD?
Expect roughly $8 to $16 per square foot installed, more with borders, premium stone, or difficult site access. A typical driveway lands in the low-to-mid thousands total. Get a site visit for an exact number.
Is exposed aggregate concrete slippery when wet?
No. The textured stone surface provides better traction wet or dry than a smooth broom-finish or stamped slab, which is why it's a common choice for pool decks and waterfront patios.
How long does exposed aggregate concrete last?
With proper base prep, curing, and periodic sealing, exposed aggregate surfaces commonly last multiple decades, comparable to or longer than plain concrete, since the color and texture come from the stone rather than surface coatings.
Should I seal my exposed aggregate concrete, and how often?
Yes. Sealing protects against staining and moisture intrusion. High-traffic, sun-exposed areas like driveways typically need resealing every 2 to 3 years; shaded or low-traffic areas can go longer.
How long does an exposed aggregate installation take?
Most residential driveways or patios take a few days to about a week from pour to final cure, depending on size, weather, and whether demolition or grading work is needed first.
Can exposed aggregate be combined with stamped concrete or staining?
Yes. It's common to pair an exposed aggregate field with a stamped border or stained accent band for a more custom look without the cost of stamping the entire surface.
