Blue metal aggregates, drainage gravel and ballast
Clean crushed aggregate in the sizes concreters, plumbers and landscapers actually ask for. Delivered by the tonne across Western Sydney.
Sizes and what they are for
| Product | Typical size | Best for |
|---|---|---|
| Blue metal 10 mm | 10 mm | Concrete mixes, pipe bedding, paths, decorative topping |
| Blue metal 20 mm | 20 mm | Structural concrete, driveways, drainage behind retaining walls |
| Drainage gravel | 20 mm | Ag lines, soakage trenches, French drains, stormwater pits |
| Ballast | 40 mm to 70 mm | Heavy drainage, gabions, erosion control, temporary access |
Sizes and stock vary through the year. Call 1300 935 483 to confirm what is on the ground this week.
Blue metal for concrete
Mixing on site? The classic mix is 4 parts 20 mm blue metal, 2 parts sand and 1 part cement. For thin slabs, paths and around pipework, 10 mm aggregate gives an easier working mix.
Drainage that keeps working
For ag lines and retaining walls, clean single sized aggregate matters: no fines to clog the pipe or the geofabric. Our drainage gravel is washed and screened for exactly that job.
How much do I need?
Allow roughly 1.5 tonnes per cubic metre for blue metal aggregate. A standard drainage trench (300 mm wide, 400 mm deep) uses about 0.18 tonnes per metre.
Related products
- Road base for compacted bases under slabs and driveways
- Crusher dust for bedding and finishing layers
Delivery and pickup
Loose loads from 500 kg, six days a week, priced by postcode. Yard pickup at 4 Harford St, Jamisontown. See delivery details.
Frequently asked questions
Should I use 10 mm or 20 mm blue metal?
Use 10 mm for concrete in thin slabs and paths, pipe bedding and decorative topping, where a smaller stone gives an easier working mix. Use 20 mm for structural concrete, driveways and drainage behind retaining walls.
What is the difference between drainage gravel and blue metal?
Drainage gravel is washed, single-sized 20 mm aggregate with no fines, so water moves freely and ag lines and geofabric do not clog. Standard blue metal is the same crushed rock but is chosen for concrete and structural uses.
How many tonnes of aggregate per cubic metre?
Allow roughly 1.5 tonnes per cubic metre for blue metal aggregate. A standard drainage trench 300 mm wide and 400 mm deep uses about 0.18 tonnes per metre of trench.
What is the minimum delivery?
Loose loads start from 500 kg, delivered six days a week and priced by postcode from our Jamisontown yard, with yard pickup also available at 4 Harford St, Jamisontown.
Aggregates priced for your postcode
Call with your suburb and tonnage for a clear delivered price.