Aggregate · 08.05
Large, tough crushed rock for drainage, stabilising slopes and banks, retaining walls and firm driveway sub-bases.
Quick answer
25–75mm Blue Rock is a large, tough crushed rock in blue-grey tones. Its size range keeps water flowing, cutting the risk of waterlogging and soil erosion, and it handles heavy use and harsh weather. It is used in drainage systems, to stabilise slopes, in water features, for retaining walls and as a sub-base under driveways and paths. Lay it about 100mm deep or more.
| Size | 25–75mm |
|---|---|
| Material | Hard-wearing crushed rock |
| Colour | Blue-grey |
| Sold by | The cubic metre |
| Typical depth | About 100mm or more |
| Coverage | About 10 m² per m³ at 100mm |
| Approx. weight | About 1.5 tonnes per m³ |
These coverage and weight figures are a guide. Work out your own area with the volume calculator.
Why choose it
Good jobs for it
This aggregate is hard-wearing crushed rock, made to cope with heavy use and harsh conditions. Because 25–75mm rock is so stable, it works well for retaining, holding garden beds against erosion and stabilising banks. It also suits driveways, packing tightly enough to form a solid, long-lasting foundation layer.
Drainage, stabilising slopes and banks, retaining walls, water features and as a sub-base beneath driveways and paths.
Yes. It makes a solid foundation layer. Finish it with something finer, like road base or crusher dust, for a smooth surface to drive on.
At 100mm deep, one cubic metre covers roughly 10 m².
Tell us what you need, how much of it and where it’s going, and we’ll reply with a price and a delivery time.
