A large exposed aggregate concrete patio at The Country Club in Cookeville — years of algae, organic staining, and surface buildup removed with professional surface cleaning equipment. Here's the full job.
This job was at The Country Club here in Cookeville — a large covered patio with exposed aggregate concrete that had accumulated years of algae growth, organic staining, and surface grime. The patio is used regularly, but surface cleaning tends to get put off until the buildup is obvious. By the time we got there, the concrete had lost most of its natural color under a dark layer of biological growth.
Patio surface cleaning at The Country Club, Cookeville TN
What We Were Working With
Exposed aggregate concrete is a popular finish for patios and pool decks because it's durable, slip-resistant, and looks sharp when it's clean. The texture is what makes it slip-resistant — but that same texture gives algae, mold, and organic debris more surface area to grip. Without regular cleaning, it goes from natural stone tones to a dark, slick, discolored mess.
This patio sits under a covered structure with tree coverage nearby — both factors that keep the surface damp longer and accelerate biological growth. It was a full surface reclamation job, not just a rinse.
The Process
- Pre-treatment: Applied a surfactant to break up the biological growth and let it dwell before washing.
- Commercial surface cleaner: Used a rotating surface cleaner across the full patio — delivers consistent, even pressure without tiger stripes or uneven cleaning patterns.
- Edge and perimeter detail: Hand-wand work along the house foundation, column bases, and perimeter edges where the surface cleaner can't reach.
- Post-rinse and inspection: Full rinse to clear cleaning solution, then a final walk to check coverage and spot-treat any remaining staining.
The After
The aggregate came back completely. The texture, the natural color variation in the stone, the overall appearance of the surface — all of it was buried under the growth and came right back with cleaning. The homeowners get a patio that looks and performs the way it should. The slip resistance is restored, the surface isn't harboring moisture and mold, and it doesn't look neglected.
Patio and Concrete Surface Cleaning Pricing in Cookeville
| Small patio (up to 200 sq ft) | $75 – $125 |
| Medium patio (200–500 sq ft) | $100 – $200 |
| Large patio (500+ sq ft) | $175 – $325 |
| Pool deck | $175 – $400 depending on size |
| Exposed aggregate, stamped, or textured concrete | Same range — no surcharge |
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