Whether you’re building a driveway in Penrith, stabilising a new subdivision road, or preparing a strong foundation for paving, choosing the right road base is essential for strength, longevity, and compliance.
But with terms like DGB20 and DGS40 thrown around, many contractors and homeowners are left wondering: What’s the difference, and which one do I need?
In this guide, we break down the differences between DGB and DGS, highlight when to use recycled road base, and explain which product is best for your job, focusing on the differences between DGB and DGS.
What is Roadbase?
Roadbase is a blend of crushed rock, fines, and aggregates compacted to form a hard, stable layer. It’s commonly used beneath bitumen, concrete slabs, pavers, and gravel driveways.
There are two main types of road base material used across Sydney and NSW:
- DGB – Densely Graded Base
- DGS – Densely Graded Sub-base
DGB vs DGS: What’s the Difference?
| Feature | DGB (Densely Graded Base) | DGS (Densely Graded Sub-base) |
|---|---|---|
| Specification | RMS 3051 – Base Layer | RMS 3051 – Sub-base Layer |
| Common Type | DGB20 (20mm minus) | DGS40 (40mm minus) |
| Particle Size | Fines to 20mm | Fines to 40mm |
| Material | Recycled (or Natural) Concrete & Brick | Typically Natural Material |
| Usage | Top layer beneath road/paving | Base layer for further topping |
| Strength | Higher compaction & load-bearing | Strong but not as refined as DGB |
| Typical Jobs | Driveways, council roads, paving base | Rural roads, slab pads, heavy vehicle areas |
| Environmental | Often recycled & eco-friendly | Usually natural/quarried material |
Why Use Recycled DGB20 Roadbase?
DGB20 is available in recycled and natural formats. Recycled roadbase, like our Roadbase Recycled DGB20 (RMS 3051), is made from crushed concrete and brick. It:
- ✅ Reduces landfill
- ✅ Offers high cementitious compaction
- ✅ Meets RMS / TfNSW compliance
- ✅ Is cost-effective for bulk orders
- ✅ Is readily available across Sydney & Penrith
Popular Search Terms We’re Seeing in Sydney & Penrith
We’ve seen increased demand in search results for:
- Road base near me
- DGB20 recycled roadbase
- DGS40 subbase Sydney
- Road base gravel delivery Penrith
- New road base suppliers Sydney
- Bulk recycled road base
If you’re searching for “New roadbase Penrith” or “Road base DGB20 near me”, you’re in the right place.
Where is DGB and DGS Used?
Use DGB20 (Recycled or Natural):
- Under driveways & crossover entries
- Beneath pavers (with 30mm sand bedding)
- Subdivision roads, council footpaths
- Slab foundations and construction bases
Use DGS40 (Natural):
- For larger subgrade preparation
- Rural and unsealed road projects
- Under deeper hardstands and industrial yards
- Projects requiring deeper compaction below final base
Get the Right Road Base, Delivered Fast
At New Elite Sand and Soil, we stock RMS-certified DGB20 and DGS40 roadbase options, available in:
- Loose bulk (by tonne)
- 1T Crane bags
- 20kg Bags
We offer quick delivery across Sydney, Penrith, St Marys, and surrounding areas.
Shop Road Base Now
Looking for:
- Road base gravel near me
- New roadbase Penrith
- DGB20 RMS 3051 certified
- Recycled sub-base and base layers
- ✅ Call us: 1300 935 483
