20mm Capping
The finishing lift, 20mm capping to seal a fill, shed water and present a tight surface for the layers above.
About this product
Capping is the transition layer between bulk earthworks and engineered pavement: a finer crushed product placed over fill or rubble to seal the surface, shed rainfall and provide a uniform platform for sub-base construction.
The 20mm grading trims and compacts to tight level tolerances, the difference between a fill that survives a wet week and one that turns to porridge. Natural or recycled supply, scheduled with your bulk material so it lands in sequence.
Specifications
| Material type | Capping / select fill |
|---|---|
| Nominal size | 20mm |
| Specification | To project and geotechnical requirements |
| Function | Bridges and stabilises soft subgrade |
| Typical compacted density | ~2.0 to 2.2 t/m³ (indicative) |
| Common uses | Subgrade capping and working platforms |
Figures shown are indicative typical properties and vary by source; details for your delivery are available on request.
Use cases
Supply & delivery
Tipper & truck and trailer
Full loads to open sites, sized to your access and the day's program.
Truck & quad
Maximised payload where site access and mass limits allow it.
Live in NXT Control
Every load GPS-tracked from the weighbridge to your gate, with the tonnes on the docket.
Over soft subgrade
Placed and compacted to stabilise variable ground before pavement works.
How much do you need?
As a guide, this material weighs around 2.1 tonnes per cubic metre. Multiply your area by the layer depth to get the volume, then by the density. Tell us the area and depth on the quote form and we will convert it to tonnes and price the delivery for you.
100 m² at 200 mm deep = 20 m³ × ~2.1 t/m³
Common questions
What is capping used for?
What size should I use?
How is it delivered, and can I track it?
Need rates for 20mm Capping?
Tell us the volume, the site and the program. Every load is tracked live through NXT Control, from quarry to your gate.