20mm Aggregate
The heavy single-size, 20mm screenings for structural concrete, soak wells and drainage that moves serious water.
About this product
20mm is the big single-size: the standard coarse aggregate for structural concrete and the material of choice where drainage needs maximum void space, soak wells, infiltration trenches, gabion fill and heavy subsoil drains.
Clean, washed and consistently cubic from quality basalt sources, it locks together well enough to place and stays open enough to drain for decades. By the tonne or the truckload.
Specifications
| Material type | Single-sized aggregate screening |
|---|---|
| Nominal size | 20mm |
| Source rock | Quality basalt |
| Processing | Washed and dust-extracted |
| Typical loose density | ~1.4 to 1.6 t/m³ (indicative) |
| Common uses | Structural concrete, drainage, soak wells |
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.
Washed & graded
Dust-extracted and consistently graded for concrete, drainage and sealing.
How much do you need?
As a guide, this material weighs around 1.5 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 100 mm deep = 10 m³ × ~1.5 t/m³
Common questions
Is this aggregate washed?
What is 20mm aggregate used for?
How is it delivered, and can I track it?
Specification references
Need rates for 20mm Aggregate?
Tell us the volume, the site and the program. Every load is tracked live through NXT Control, from quarry to your gate.