Cage Football Courts: Fix Loose Rubber and Hard Falls
Quick answers
| Question | Short answer |
|---|---|
| What turf suits a cage football court | 30-40 mm short pile, 18,000-25,000 stitches per m², sand dressed |
| Do I need rubber crumb infill | Usually no. Sand alone keeps the surface firm and stops crumb migration |
| What goes under turf on concrete | A shock pad and a drainage layer. Never turf straight onto the slab |
| Typical 5-a-side playing area | 25-42 m × 16-25 m |
| Fence height | 3-4 m on the sides, 6 m behind the goals |
| Minimum drainage rate | 100 mm per hour with a 1.5% fall |
A cage football court solves one problem and creates three. The fence keeps the ball in. It also keeps players turning in a small space, which speeds up wear, moves infill and puts knees closer to concrete.
This guide covers the turf and the base build that answer all three. It is written for contractors, school facility teams and operators pricing a 5-a-side cage.
Why rubber crumb leaves a cage football court
Rubber crumb is designed to sit loose on top of the pile. On an open pitch that is acceptable. Inside a cage it has nowhere to settle.
Three things move it:
1. Studs. Every step lifts granules and flicks them forward. In a small court, players change direction far more often than on a full pitch.
2. Short pile. Grass under 30 mm holds very little crumb. The granules sit on the surface instead of inside the pile.
3. Open edges. Without a kickboard or a mesh skirt, crumb leaves through the gate and along the fence line.
The result is a surface that gets harder and faster every season. Players feel it in their knees before the operator sees it on a maintenance report. Once the crumb layer is uneven, topping it up only fixes the look. It does not fix the bounce.
There is a second cost. Loose crumb travels. It reaches drains, walkways and neighbouring property. In several markets this is now a compliance question, not just a housekeeping one.
Fix 1: Take the infill out completely
Non-infill turf uses a denser, stiffer fibre and no loose aggregate. Nothing can flick up because nothing is loose.
Best for:
- Rooftop courts where crumb would blow off the edge
- Indoor and covered cages
- Sites with strict drainage or environmental rules
- Operators who want the lowest routine maintenance
Trade-off: the surface plays firmer and faster. Players who expect a soft, slow pitch will notice. Choose a longer pile within the non-infill range if comfort matters more than speed.
More on how these systems are built: non-infill football turf introduction.
Fix 2: Keep the sand, drop the crumb
This is the most common answer for a cage on concrete, and the system we specify most often.
The build uses a 30-40 mm short pile dressed with silica sand only, at roughly 15-20 kg per m². Sand locks the fibre upright and adds weight. There is no rubber layer to migrate.
What you get:
- Firm, predictable ball roll
- No crumb in the gate, the drain or the changing room
- Lower top-up cost, because sand stays in the pile
- A surface that still takes a stud without feeling like a car park
The pile has to be dense enough to hold the sand. Below roughly 18,000 stitches per m² the sand sits loose and the court looks patchy within a year. This is where cheap cage football turf usually fails.
See the system we build for this application: cage football court artificial grass.
Fix 3: Keep the crumb, control it
If the court already has a crumb system and the budget will not stretch to replacement, control what is there.
- Fit kickboards along the fence base. A 200-300 mm board stops crumb at the edge.
- Add a grate or mat at the gate. Most crumb leaves on players' shoes, not on the wind.
- Deepen the pile at the next replacement. Moving from 30 mm to 40 mm gives the crumb somewhere to sit.
- Switch to coated crumb. The coating reduces dust and slows breakdown.
- Top up in spring, not in winter. Fresh crumb needs time to settle before heavy use.
These measures reduce loss. They do not stop it. Plan for a full replacement cycle rather than treating the fix as permanent.
| Route | Upfront cost | Surface feel | Crumb loss | Best for |
|---|---|---|---|---|
| Non-infill | Medium | Firm, fast | None | Rooftop, indoor, tight rules |
| Sand dressed | Medium | Firm, controlled | None | Most concrete and asphalt cages |
| Crumb plus controls | Low at first | Soft, slower | Reduced, not stopped | Existing courts, tight budget |
What has to sit under the turf
A cage football pitch usually goes on one of three bases. Each one changes the build.
Concrete slab. The slab does not absorb impact. Turf laid straight onto it will pass the impact straight to the player. You need a shock pad between the slab and the turf, plus a way for water to leave the surface.
Rooftop deck. Weight is the limit here. A shock pad and a light drainage layer are usually possible. A thick stone sub-base is not. Confirm the load capacity before you specify anything.
Existing asphalt. Check for level and for old water damage. Small hollows become puddles once the turf is sealed down.
On all three, drainage is decided before the turf is ordered. A 1.5% fall to a linear drain or to perimeter outlets is the normal target. The surface itself should pass at least 100 mm of rain per hour.
If water has nowhere to go, it sits under the backing. That shortens the life of the turf and softens the base. It also voids most warranties.
Products and detail for this stage:
- Shock pad for artificial grass
- What to put under artificial grass
- Does artificial turf require drainage
A tested system on a proper pad should land in the 55-70% shock absorption range used for football turf. Ask for the test report for the full build, not just for the carpet.
Size, fence and layout
A 5-a-side cage is smaller than most buyers expect. That is the point. Small dimensions keep the game fast and the rent high.
| Format | Playing area | Typical fence height |
|---|---|---|
| 3-a-side | 20-30 m × 12-18 m | 3 m |
| 5-a-side | 25-42 m × 16-25 m | 3-4 m sides, 6 m behind goals |
| 7-a-side | 50-65 m × 30-45 m | 4-6 m |
Leave 1-2 m of run-off behind each goal if the site allows it. On tight urban plots, the fence becomes the run-off. In that case use a rebound frame behind the goal so players are not stopped by netting alone.
Fence height matters more than most buyers think. A 3 m fence contains a ground game. It does not contain a lofted ball from a strong player. If the site sits next to a road or a glass facade, go higher behind the goals.
Planning a larger format? See 7-a-side pitch cost and turf quantities.
Turf specification for a cage court
| Parameter | Recommended | Note |
|---|---|---|
| Pile height | 30-40 mm | 30 mm for speed, 40 mm for comfort |
| Density | 18,000-25,000 stitches/m² | Dense enough to hold sand |
| DTEX | 6,000 or higher | Higher DTEX resists abrasion at turning points |
| Fibre shape | Monofilament or diamond | Diamond holds shape under repeated traffic |
| Infill | Silica sand 15-20 kg/m² | No rubber crumb |
| UV resistance | Grade 5 or higher | Essential for open-air cages |
| Drainage | 100 mm/h minimum | With 1.5% fall to outlets |
| Shock absorption | 55-70% | Requires a pad on concrete |
Two numbers decide most of the outcome. Density decides whether the sand stays put. DTEX decides how the fibre looks after two seasons of five-a-side. A quote that lists only pile height is not telling you enough.
For the full parameter set on larger pitches, see football turf specification guide.
What moves the price
Cage football courts vary widely because four items change independently.
1. Base. A new concrete slab costs far more than turf over an existing one.
2. Shock pad. Skipping it saves money now and costs more in claims later.
3. Turf density and DTEX. Higher numbers cost more per m² and last longer.
4. Fence and frame. Height, post spacing and rebound boards often cost more than the turf.
Ask for a quote split by these four lines. A single lump sum hides which part is being cut. For the wider cost picture, see football ground installation cost.
Maintenance that keeps the surface playable
• Brush the court weekly against the pile direction. This lifts flattened fibre and redistributes sand.
• Check sand depth at the goalmouth and at the centre spot every quarter. These are the first areas to thin.
• Clear the gate grate weekly. A blocked grate pushes crumb and water back onto the court.
• Inspect the fence base monthly. A gap of 50 mm is enough for a ball to escape and for crumb to wash out.
• Remove organic debris before it breaks down. Leaves and seed heads hold moisture against the backing.
A cage court that gets weekly brushing will hold its sand for years. One that never gets brushed will need a top-up within eighteen months. The labour is small. The difference is not.
Installation sequence and post-build checks are covered in artificial turf paving and installation.
Built examples
Four cage court projects, each on a different site and base:
- Cage football turf in Mombasa, Kenya
- Cage football pitch in South Africa
- Cage football court in Bahrain
- Cage football turf in Cambodia
FAQ
1. Can you lay artificial grass straight onto concrete?
No. Concrete does not absorb impact, so the turf needs a shock pad underneath. You also need a fall and an outlet so water can leave the surface.
2. Is rubber crumb necessary for a cage football court?
No. A sand-infill short pile plays well and removes the migration problem. Crumb is a comfort choice, not a structural requirement.
3. How do you stop rubber granules leaving the pitch?
Reduce or remove the crumb layer, fit kickboards at the fence base, and add a grate at the entrance. Most loss happens on shoes, not on the wind.
4. How high should the fence be?
3-4 m works for most 5-a-side cages. Raise it to 6 m behind the goals if the site is tight or if a lofted ball could reach a road or a window.
5. How often should the sand be topped up?
Check every quarter and top up once a year in normal use. The goalmouth and the centre spot thin first.
6. Does a cage football court need planning permission?
This depends on the site and the local authority. Fence height and lighting usually trigger the question. Check before you order materials.
Planning a cage football court?
Send us the site dimensions, the base type and the fence height you have in mind. We will return a turf specification and a quote split by material, pad and delivery.
