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Road base · 09.03

Road Base 2.5 – CBR15

Long-lasting, easy-to-install road base designed for compaction. For carparks, driveways, landscape levelling, paver bases and slab foundations.

  • Type 2.5
  • CBR 15
  • Compactable
  • Sold per m³
Road Base 2.5 – CBR15 supplied in bulk by Bulk Landscape Supplies Brisbane
Natural product. As our products come from natural sources, they may slightly differ in colour, shape and size. Website images are a guide only.

Quick answer

Road Base 2.5 – CBR15 is a road base with a California Bearing Ratio of 15, designed for compaction. It is long-lasting, durable, easy to install and water-resistant, and is used for carparks, driveways, landscape levelling, paver bases and concrete slab foundations. For heavier traffic, step up to CBR45 (Type 2.3) or CBR80 (Type 2.1). Lay about 100–150mm and compact.

Road Base 2.5 – CBR15 at a glance
GradeType 2.5
CBR15
Best forLandscape levelling, paver bases, lighter-duty areas
Sold byThe cubic metre
Typical depthAbout 100–150mm compacted
CoverageAbout 7–10 m² per m³
Approx. weightAbout 2.0 tonnes per m³

Coverage and weight are approximate. Check your area with the volume calculator.

Why choose it

Best features

  • 01Long-lasting
  • 02Designed for compaction
  • 03Durable
  • 04Easy to install
  • 05Water-resistant

Where to use it

Versatile applications

  • 01Carparks
  • 02Driveways
  • 03Landscape levelling
  • 04Paver bases
  • 05Concrete slab foundations

Compare grades

Which road base grade?

CBR (California Bearing Ratio) measures how much load a compacted base can carry. The higher the number, the stronger the base.

GradeCBRTypical use
Road Base 2.1 – CBR8080Heavy-duty, high-traffic pavements and road construction
Road Base 2.3 – CBR4545Standard roads, driveways and parking areas
Road Base 2.5 – CBR1515Landscape levelling, paver bases and lighter-duty areas (this product)

Strength

One of the standout features of Road Base 2.5 is its high California Bearing Ratio (CBR) of 15, ensuring optimal load-bearing capacity and superior structural integrity. This makes it ideal for high-traffic and heavy-load areas, providing a stable foundation that can withstand the stresses of constant use.

Choosing a grade

A CBR of 80 or higher (e.g. Type 2.1) is ideal for heavy-duty, high-traffic pavements, while CBR 45 is common for standard roads, driveways, and parking areas.

Common questions about Road Base 2.5 – CBR15

What is the difference between 2.1, 2.3 and 2.5 road base?

The number is the grade and the CBR is its strength rating. 2.1 (CBR80) suits heavy-duty, high-traffic pavements; 2.3 (CBR45) suits standard roads, driveways and parking; 2.5 (CBR15) suits levelling, paver bases and lighter areas.

Can I use 2.5 road base under pavers?

Yes. It is designed for compaction and makes a firm, level paver base.

How much road base do I need?

Allow 100–150mm compacted. One cubic metre covers about 7–10 m² at that depth; order a little extra because it compacts down.

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Send through the product, quantity and delivery suburb and we’ll come back with a price and a delivery time.