
20 MPa concrete · N20
N20 Concrete (20 MPa): Uses, Price & Ordering
N20 concrete is 20 MPa normal-class concrete: the N20 grade name and 20 MPa strength rating both refer to the standard 28-day compressive strength.
N20 concrete is a light-duty normal-class mix for paths, blinding layers, garden edging, and non-structural pads. In 2026, Sydney N20 material pricing is typically $320-340/m3 before delivery, short-load fees, pump hire, waiting time, and GST. Check live availability by postcode before ordering.
Reviewed by Ross Mildwater, Senior Advisor, Customer Operations at MixHub
Indicative material price
$320-340/m3
Sydney 2026 guide range. Delivery, short-load fees, pump hire, waiting time, and GST depend on postcode, date, volume, and access.
Common names
20 MPa (N20)
Suppliers, engineers, and plans may write this as 20 MPa, N20, or 20MPa. They all refer to the same normal-class concrete strength.
Where to use 20 MPa (N20) concrete
Garden paths
N20 can suit foot-traffic paths where vehicle loads and structural requirements are not involved.
Blinding layers
Use N20 for low-strength blinding or working layers when the drawings allow a normal-class 20 MPa mix.
Small pads
Light utility pads and mower strips may suit N20 when durability demands are low.
Grade decisions: use, avoid, upgrade, or downgrade
Always follow the engineer's specification, approved drawings, council requirements, or builder direction where they nominate a concrete grade, slump, exposure class, reinforcement, or aggregate size.
When not to use 20 MPa (N20)
- Driveways, garage slabs, shared accessways, or vehicle traffic where N25 is usually the practical minimum.
- Engineer-specified slabs, footings, suspended slabs, pools, or retaining-wall work.
- Exposed or wet structural elements where durability and exposure class requirements can exceed 20 MPa.
| Decision | Recommendation | Why |
|---|---|---|
| Use N20 | Paths, garden edging, blinding layers, and small non-structural pads. | It keeps material cost down where loads and durability requirements are modest. |
| Upgrade to N25 | Driveways, garage slabs, paths that need extra durability, and most residential slabs. | The small price uplift usually buys a more durable mix for common residential work. |
| Upgrade to N32+ | Footings, pools, exposed structural work, heavy vehicles, or engineer-specified pours. | Higher load and exposure risk should follow the engineering specification, not a light-duty default. |
Price 20 MPa (N20) concrete for your postcode
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