Boral supplies fill materials for site preparation, earthworks and construction applications, providing cost-effective solutions for levelling, backfill and foundation support. Our range includes specified fill and general fill, produced from quarry overburden and low-grade crushed rock and supplied across a national network of quarries.
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Specified fill
Fill material supplied to a nominated specification for applications requiring defined performance and compliance.
Best for
- Pavement and hardstand construction
- Structural fill applications
- Projects requiring compliance with specifications
Applications
- Pavement subgrade and base preparation
- Structural fill and embankments
- Site levelling and void filling
Features & benefits
- Supplied to nominated project or authority specifications
- Typically produced from quarry overburden or low-grade crushed rock
- Designed to meet defined grading and performance criteria
- Provides consistent compaction and stability for engineered applications
Supply format
- Bulk
Unspecified fill
Fill material produced from quarry overburden or low-grade crushed rock, suitable for construction applications where performance is required but formal specification compliance is not necessary.
Best for
- Construction applications requiring consistent material
- Site works where specification compliance is not mandatory
- Cost-effective alternatives to specified fill
Applications
- Site levelling and ground raising
- Backfill and earthworks
- Hardstand and construction support areas
Features & benefits
- Produced from processed quarry materials
- More consistent than general fill
- Suitable for controlled placement and compaction
- Cost-effective option for non-specified works
Supply format
- Bulk
General fill
Bulk fill material typically sourced from quarry overburden, suitable for large-scale earthworks and applications where material consistency is not critical.
Best for
- Bulk site levelling and ground raising
- Large-scale earthworks
- Non-structural and low-performance applications
Applications
- Site levelling and ground raising
- Backfill and earthworks
- Hardstand and construction support areas
Features & benefits
- Bulk site levelling and ground raising
- Large-scale earthworks
- Non-structural and low-performance applications
Supply format
- Bulk
Typical applications
Fill materials are used across a wide range of construction and civil applications, including:
- Site preparation and levelling
- Pavement and subgrade construction
- Backfill for excavations and foundations
- Embankments and ground elevation works
Fill material is used to raise ground levels, replace unsuitable soils and create stable surfaces for construction, supporting long-term performance when correctly selected and compacted.
Choosing the right fill material
| Product | Spec level | Material control | Best use | Cost |
|---|---|---|---|---|
| Specified fill | Required | High | Structural, engineered works | High |
| Unspecified fill | Not required | Moderate (processed) | Construction-grade applications | Medium |
| General fill | Not required | Low (variable) | Bulk earthworks, levelling | Low |
Bulk fill supply
Boral provides bulk fill material supply to support projects of all sizes, from local developments to major infrastructure works.
- Bulk delivery from a national quarry network
- Suitable for large-scale earthworks and construction projects
- Reliable supply and consistent material availability
Technical considerations
When selecting fill material, key factors include:
- Grading – particle size distribution affecting compaction and stability
- Plasticity – behaviour of fine materials under moisture and load
- Compaction performance – ability to achieve required density
- Material consistency – variation in general fill vs controlled specification fill
These properties influence load-bearing capacity, settlement risk and long-term performance in construction applications.