Exposed Aggregate Driveway Sealing in Mt. Juliet, TN

Exposed aggregate driveways require different sealer chemistry than standard poured concrete — and most pressure washing companies either don't know this or apply the wrong product anyway. Aggregate driveways have a textured surface of embedded stone or gravel that's been exposed by washing away the top layer of cement paste. That texture is both the appeal and the vulnerability: the porous gaps between stones collect water, algae, and debris in ways that a flat concrete surface does not.

The right sealer for exposed aggregate is a penetrating impregnating sealer — one that soaks into the voids between the aggregate particles and the substrate beneath without filling or bridging the texture. A film-forming sealer (the kind that creates a glossy surface coating) does not bond well to aggregate because the texture prevents complete surface contact. It will begin peeling at the high points within a season or two, especially with Tennessee's freeze-thaw cycling and summer heat.

We clean the aggregate surface first — removing algae, biological staining, and debris from the stone texture — then apply a penetrating sealer formulated for aggregate or rough concrete. The result is a driveway that maintains its natural texture and appearance while being protected against moisture intrusion, oil staining, and the red clay that's common in Mt. Juliet's new construction areas. The sealer is completely invisible when dry.

Exposed aggregate sealing is one of the least-served niches in Middle Tennessee's pressure washing market — most companies default to standard concrete sealers that don't perform well on this surface. We've specialized in this process specifically because Wilson County's newer, upscale subdivisions have a high concentration of decorative aggregate driveways that need the right treatment.