5-15mm Crushed Concrete Drainage Metal
Our 5-15 mm crushed concrete drainage metal is a versatile mid-size recycled aggregate ideal for general drainage work, civil construction, and landscaping. Produced from high-quality recycled concrete, the material is crushed, screened, and cleaned to deliver consistent particle sizing between 5mm and 15mm.
This size range offers a good balance between free-draining performance and structural stability, making it one of the most commonly used drainage metals in both residential and commercial projects across New Zealand.
Recycled crushed concrete is a proven sustainable alternative to virgin aggregate, helping reduce landfill waste and lower the environmental impact of construction activities while still delivering strong, reliable performance.
Typical uses & applications
The 5-15 mm size is widely used across drainage and construction projects because it handles water flow efficiently while still providing bulk and load-bearing capability.
Common uses include:
- General drainage layers for residential and commercial sites
- Pipe bedding & pipe surrounds for stormwater, sewer and sub-soil lines
- Drainage trenches where a medium-sized aggregate is required
- Soak pits & stormwater systems
- Backfill around retaining walls to promote water movement and relieve pressure
- Under paving & concrete pads where a free-draining sub-base is needed
- Landscaping drainage layers to prevent waterlogging and soil saturation
The size range (5-15mm) makes it an ideal “all-rounder” drainage aggregate for landscapers, civil contractors and builders.
Why Choose 5-15mm Recycled Crushed Concrete Drainage Metal?
✔ Excellent Drainage Performance
The angular, fractured concrete particles interlock while still leaving clear pathways for water movement – ideal for preventing blockages and supporting long-term flow.
✔ Sustainable Construction Material
Using recycled crushed concrete significantly reduces the demand for virgin quarry materials and prevents usable concrete from entering landfill. It’s an environmentally conscious choice for modern building and infrastructure work.
✔ Cost-Effective & High Performance
You get excellent drainage and stability characteristics at a more competitive price than traditional virgin aggregates.
✔ Clean, Well-Graded & Reliable
Our 5-15mm drainage metal is screened to remove dust and excess fines, ensuring consistently clean drainage capability.
✔ Locally Produced & Delivered NZ-Wide
We’re based in Hamilton and supply projects throughout the Waikato and across New Zealand. You get fast delivery, local knowledge, and dependable service.
Key Specifications
Size range: 5mm – 15mm
Material: 100% recycled crushed concrete
Shape: Angular for interlock & stability
Drainage: High-minimal fines, free-draining
Typical placement: Bedding layers, trenches, backfill, base prep
Compatibility: Suitable for small to medium pipe systems, landscaping, retaining drainage and sub-base work
Why Choose Us?
We specialize in supplying premium recycled crushed concrete products throughout Hamilton and Waikato, supporting both small local projects and large civil works. Our commitment to quality, sustainability and consistent grading ensures you get a drainage metal you can truly rely on.
Whether you need a single load or ongoing supply, we provide flexible delivery options and reliable service NZ-wide.