A court has to hold flat within a fraction of an inch for twenty years, and what holds it there is two feet of material nobody sees.
Courts fail from the bottom. The puddle that never dries in one corner, the crack that ghosted through the color coat in year three, the spot where the ball dies: all of it traces to something below the concrete rather than on it. Acrylic is a few thousandths of an inch of paint. It reports every problem underneath and fixes none of them.
We build court slabs for associations and property owners around Fort Collins, out through Rigden Farm and Registry Ridge and on commercial property along Harmony and near Fossil Creek. Groups arrive with the surfacing decision made and the ground work barely discussed. This flips that, because the ground work is where the twenty years comes from.
This surprises people. We're not chasing the strongest ground under a court. We're chasing ground that behaves the same way everywhere.
A slab on uniformly mediocre material stays flat. A slab sitting half on undisturbed ground and half on fill cracks, right along the line between them, because the two halves move by different amounts every wet season and every winter. That's the most common reason a court develops a structural crack. Not the mix, not the finish. Somebody set the pad across a grade transition and never corrected it.
So when a footprint straddles cut and fill, we handle that first. Over-excavate the fill side and rebuild in lifts, or take the whole area to a common depth and build back up uniformly. Adds a day of dirt work. It's the difference between a court that plays true and one somebody patches every few seasons.
| Layer | What it's there for | What skipping it costs you |
|---|---|---|
| Color coat and line paint | Playing speed, traction, looks | Nothing structural. It's the report card, not the student. |
| Concrete slab with steel at mid-depth | A rigid plane that spans imperfections and holds cracks tight | Thin slabs flex, hairlines open, and both telegraph upward |
| Compacted aggregate base | Uniform support and a path for water to leave | Point loading on high spots, and a slab that never sits evenly |
| Separation fabric over the subgrade | Keeps fine soil from migrating into clean rock | The base turns into dirt and stops acting like base |
| Prepared subgrade | Consistent behavior across the whole footprint | Differential movement, the number one court killer |
| Perimeter and subsurface drainage | Keeps water from sitting under the pad all winter | Frost heave at the corner nobody thought about |
A court is a large flat impermeable rectangle. Whatever falls on it has to go somewhere, and whatever the surrounding grade sends toward it has to be intercepted before it gets underneath.
On the surface we build a single plane sloping one direction across the court, gentle enough that play isn't affected and continuous enough that nothing stands. No crown, no valleys, no fall running along the direction of play. Around the perimeter we intercept whatever arrives from off the pad: grading, a swale, or a drain where the site forces it. Underneath, free-draining base with an exit for moisture.
Get that wrong here and winter collects the debt. Water trapped under a corner freezes, lifts the slab a fraction, then sets it back down. Repeat all winter, every winter, and even a good slab cracks at the point of maximum flex. No coating survives movement underneath it.
Let us dig a couple of test holes across the footprint first. What we find changes the design more than any other decision you'll make.
A court slab goes down in one continuous placement. No cold joints, no coming back tomorrow for the other half, because a joint through a playing surface is a permanent flaw. So it gets scheduled around a stretch of cooperative weather with enough crew and trucks to finish in a single go.
Then the part groups don't plan for. Concrete has to cure before acrylic goes on, and the surfacing carries its own temperature and dryness limits. Up here that math gets tight fast. A June slab gets coated the same summer. A late September slab very likely waits until spring for color, and we'd rather say so in the first meeting than in October.
Still unsure about something?
Call the crew at (303) 569-4046 and we will talk it through.
Get a free, no-obligation estimate from a crew that knows Colorado soil, Colorado weather, and how to finish concrete that lasts.
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