5-15mm Crushed Concrete Drainage Metal
Our 10–15 mm crushed concrete drainage metal is a highly reliable, medium-sized recycled aggregate made from screened and cleaned crushed concrete. Sized between 10mm and 15mm, this grade delivers excellent drainage efficiency while offering more structure and load stability than smaller drainage metals.
This size is a popular choice across civil, landscaping and construction projects throughout New Zealand, especially when you need a drainage metal that strikes the perfect balance between flow rate and aggregate bulk.
Being locally processed, this recycled concrete product is a sustainable alternative to virgin quarried aggregate, helping cut waste, reduce environmental impact, and keep construction costs under control.
Typical Applications
10-15mm drainage metal is commonly used for:
- General drainage systems where consistent medium-sized aggregate is required
- Pipe bedding for larger diameter pipes (stormwater, sewer, sub-soil)
- Drainage trenches for infrastructure, rural and residential developments
- Retaining wall backfill to maintain steady water movement and reduce hydrostatic pressure
- Stormwater soak pits & French drains
- Under-slab drainage layers
- Base preparation for hard landscaping such as pathways and garden edging
When you need strong drainage performance with a little more body than smaller sizes, 10-15mm is a go-to choice.
Why Choose 10-15mm Recycled Crushed Concrete Drainage Metal?
✔ Strong Drainage Flow
The medium-size particles maintain open channels for water to move efficiently, preventing blockages and ensuring long-term drainage reliability.
✔ Greater Stability & Support
Compared to finer aggregates, the 10-15mm grade offers added bulk and firmness, making it suitable for deeper trenches, larger pipe systems and more demanding drainage environments.
✔ Environmentally Conscious Choice
Recycled crushed concrete significantly reduces landfill waste, cuts demand for virgin aggregates and lowers carbon impact, a major benefit for modern eco-conscious construction.
✔ Cost-Effective Without Sacrificing Quality
This grade provides top-tier drainage capability and stability at a more competitive price than comparable virgin drainage metal.
✔ Clean & Well-Screened
We ensure minimal fines so the aggregate remains free-draining and consistent for civil and landscaping work.
✔ Local Hamilton Supplier – NZ-Wide Delivery
We supply directly from Hamilton, servicing the wider Waikato region and delivering nationwide to contractors, developers, landscapers and homeowners.
Key Specifications
Size range: 10mm – 15mm
Material: 100% recycled crushed concrete
Shape: Angular, offering natural interlock and stability
Drainage performance: High – minimal fines, optimized for flow
Common uses: Trenches, pipe bedding, sub-soil drainage, retaining walls, stormwater systems
Suitable for: Medium to large pipelines, infrastructure works, landscaping drainage layers
Why Buy From Us?
We specialise in producing high-quality recycled crushed concrete right here in Hamilton. Our drainage metals are trusted across the Waikato and shipped widely throughout New Zealand.
You’ll benefit from:
- Consistent grading & clean material
- Sustainable, cost-efficient options
- Fast delivery & flexible load sizes
- A full range of crushed concrete drainage grades for all project types
Whether you’re a homeowner, landscaper or civil contractor, we make it simple to get quality drainage metal delivered on time.
Need 10-15mm crushed concrete drainage metal for your project?
Contact us today for pricing, availability, and delivery options across Hamilton, Waikato and the rest of NZ.