How Much Sand Infill Per m² for Artificial Grass?

How much sand infill per m²? For installed artificial grass the working figures are 5–8 kg/m² for residential gardens and landscaping, 15–20 kg/m² for kindergartens and school playgrounds, 12–15 kg/m² for a Padel court, and 28–35 kg/m² for a professional 50–60 mm football pitch. As a field rule, sand infill should sit at one-third to one-half of the pile height — no more, no less.

Laying the turf on sharp sand instead? Then you are asking a different question. Sharp sand is a bedding layer, not an infill: it is normally specified at 10–25 mm compacted, and one bulk bag typically covers 15–18 m². We separate the two numbers in Sand under the turf below, because mixing them up is the single most common cause of over-ordered sand and unstable surfaces.

Confirming the accurate sharp sand infill amount per square meter is the core step to ensuring court flatness, athlete safety, and long-term project success.

Whether you are installing a professional football pitch, a high-traffic padel court, or a luxury landscape, getting the "sand-to-turf ratio" right is critical.

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Key Factors Deciding Your Sand Infill Volume

It is a myth that every lawn needs the same amount of sand. The volume depends on:

• Pile Height & Dtex: Higher grass blades require more infill to remain vertical.

• Application Intent: A FIFA-standard football field has vastly different shock-absorption needs than a backyard putting green.

• Fiber Density: High-density turf (like our UNIGRASS Padel Turf Series) requires precision grading to ensure sand reaches the base without clumping — check the high-density turf specifications for your series.

• Climate Conditions: High-rainfall regions require specific sand granulometry to maintain drainage efficiency.

Sand Infill Dosage Chart: kg per m² by Grass Height and Application

Updated September 2026. These figures are calibrated against the latest FIFA Quality Programme and ITF (International Tennis Federation) standards.

These are figures for sand-filled systems, where sand alone provides the ballast and stability. If your specification is a sand-plus-rubber system (sand plus SBR granules), the sand component is lower and the rubber layer is added on top — do not order the sand column as the total infill. Confirm the split with your system supplier, or send us the specification and we will break it down. For 50–60 mm football turf in the UNI-MAXPRO and UNI-PrimeSM50 range, see the 60 mm FIFA-oriented football turf data sheets.

How Many 25 kg Bags Per m²? 

Add 5–10% to every calculated total for waste, wind loss and the first top-up. Sand is priced by the tonne but ordered by the bag or the bulk bag, so converting before you buy is what keeps a project inside budget.

The "1/3 Rule" for Contractors

A quick field test: The ideal sand depth should be 1/3 to 1/2 of the grass pile height. This ensures enough fiber is exposed (top 2/3) for a natural look while the bottom is anchored firmly. If you are still preparing the substrate, start with what goes under artificial grass before you calculate infill.

Not sure how much sand your project needs? Send us your drawings — we return the exact tonnage, bag counts and a specification sheet within 24 hours. Request a free tonnage calculation and shop drawing

Sand Under the Turf: How Much Sharp Sand Per m² Do You Actually Need?

If your search was about sand for laying artificial grass, you are probably not asking about infill at all. Sharp sand — and its close relative granite dust (grano dust) in the UK and Ireland — belongs underneath the turf, as the levelling or bedding layer that sits on top of the compacted sub-base. It is a surface-preparation material, and it is specified by thickness, not by weight.

The convention is a 10–25 mm compacted layer of sharp sand or granite dust, screeded flat and lightly compacted. Because it is quoted by volume rather than weight, suppliers usually work in bulk bags: one bulk bag typically covers 15–18 m². Granite dust gives the firmer, more stable finish and is the more common choice for sports and heavy-traffic installations; sharp sand is widely used for domestic lawns.

So there are two different "sand per m²" numbers on every project, and they are not interchangeable. Ordering 30 kg/m² of sharp sand because it appeared in an infill chart will bury your surface; ordering silica sand for the bedding layer will cost more than it needs to.

Rule of thumb: sharp sand and granite dust go under the grass. Silica sand goes into the grass.

Sharp Sand vs Silica Sand: Why "Cheap Sand" Is Expensive

As a manufacturer, we categorize infill sand into three levels. Unigrass only recommends Grade 1 for sports projects.

Grade 1: Kiln-Dried Silica Sand (Recommended)

Specs: >95% SiO2, Sub-rounded grains.

Benefit: It acts like tiny ball bearings. It doesn't clump, doesn't dust, and allows 100% drainage. This is the grade we specify with UNI-PrimeSM50.

Grade 2: Washed Sharp Sand

Specs: Angular edges.

Risk: Suitable for landscape, but the sharp edges act like "knives" under sports traffic, sawing through the turf fibers from the root. That is why it is not specified as infill in sports systems.

Grade 3: Sea Sand / Crushed Stone (Forbidden)

Risk: Sea sand contains salt that corrodes the turf backing, leading to irreversible cracking within 12-18 months.

How to Apply Sand Infill: The UNIGRASS "Two-Pass" Method

Don't dump all the sand at once. Follow the UNIGRASS standard:

• Clean & Dry: Ensure both the turf and the sand are 100% dry. Moisture causes sand to "bridge" on top of the blades.

• First Pass (50%): Apply half the sand and use a power brush to work it deep into the thatch.

• Second Pass (50%): Apply the remaining sand. This ensures no fibers are "trapped" underneath.

Final Grooming: Brush against the grain to "fluff" the blades for a perfect finish.

Common Mistakes: Over-Filling, Under-Filling and Skipping Maintenance

• Over-filling: Results in a "sandy" look and reduces the soft feel of the grass.

• Under-filling: Causes the turf to "creep" and creates dangerous wrinkles (trip hazards) — see how to fix bulges and wrinkles in football fields.

• Skipping Maintenance: Sand settles. For high-frequency sports fields, we recommend a top-up every 12 months,  together with the correct shock pad specification underneath.

How Much Sand for a Full-Size Football Pitch?

Purchase orders rarely ask for one square meter. Here is the same calculation scaled to a standard pitch:

• Pitch area: 105 m × 68 m = 7,140 m² — the same footprint we break down in how many square feet a full-size pitch covers.
• Infill at 28 kg/m²: 7,140 × 28 = 199,920 kg ≈ 200 tonnes
• Infill at 35 kg/m²: 7,140 × 35 = 249,900 kg ≈ 250 tonnes
• In 25 kg bags: 8,000 – 10,000 bags

That is 200–250 tonnes of sand for one pitch — roughly 8–10 truckloads to plan for, plus site access, unloading windows and staged delivery so the pile does not block the brush and the seams. On a project of this size, sand is usually the second-largest material line after the turf itself: see what an installed football pitch actually costs before you commit the tonnage.

Send us the drawing and we will do this arithmetic for you — tonnage, bag count, delivery staging and the specification sheet. 

Sand Infill, Rubber Infill, or No Infill at All?

Not every project should be carrying 200 tonnes of sand. The three system families behave very differently:

Why UNIGRASS Is Your Trusted Project Partner

We don't just supply turf; we supply engineered systems. When you choose UNIGRASS, you get:

• Custom Calculation Reports: Send us your project drawings, and we provide the exact tonnage needed — see our design and calculation service.

• Lab-Tested Performance: All our sports series are tested for UV stability and wear resistance. Browse the UNI-EC01, UNI-MAXPRO and UNI-PrimeSM50 series.

• Global Logistics Support: We can help source specialized silica sand for your local market, and we support the installation stage from sub-base to first top-up.

Tell us your site and your pile height, we will tell you the sand, the tonnage and the system. Get a project quote.