As the construction industry faces growing pressure to reduce environmental impact and extend the life of infrastructure assets, Auckland Aggregates is leading the way with two practical, sustainability-focused solutions: the Gecko Envirocap and RRA – Recycled Road Aggregates.
Together, these innovations demonstrate Auckland Aggregates’ commitment to circular economy principles and long-term performance, offering clients cost-effective, environmentally responsible options for both residential and commercial builds.
Extending the Life of Retaining Walls - Gecko Envirocap
The Gecko Envirocap is a simple but highly effective solution designed to tackle one of the most common causes of premature timber failure - crown rot. Developed locally by industry veteran Dave Stringfield, the Gecko Envirocap is a UV-stable polymer cap that fits securely over the top of sawn retaining wall poles. By preventing water infiltration at the crown, it significantly reduces fungal decay and prolongs pole lifespan by up to 20 years or more.
Available in diameters from 160 mm to 400 mm and manufactured in a distinctive Koraka Green finish, the Gecko Envirocap is ideal for both new builds and retrofits. Its low-profile design and ease of installation make it a smart choice for landscapers, builders, and homeowners seeking to reduce long-term maintenance costs while improving structural integrity.
RRA - Re-cycled Road Aggregate achieving full compression in high impact zone
Rebuilding with Purpose - Recycled Road Aggregates
Alongside preventative innovation, Auckland Aggregates is also addressing sustainability at the materials level through its RRA (Recycled Road Aggregate) range. These high-performance aggregates are produced by crushing high-quality reclaimed road millings to create certified, structurally reliable base-course materials.
Available in multiple grades, including GAP10, GAP20, GAP40, and GAP65 - RRA products provide excellent compaction and drainage performance, making them suitable for a wide range of civil and landscaping applications. Each batch is tested for leachate and strength, ensuring safety and compliance for urban and rural developments alike.
Beyond performance, the environmental and economic benefits of RRA are clear. Reusing road materials reduces landfill demand, conserves virgin quarry resources, and cuts down on haulage costs, all without compromising structural performance. Research from New Zealand Transport Agency (NZTA) supports the use of RRA in appropriate settings, with studies showing equivalent load-bearing capability when properly compacted.
A Sustainable Supply Chain for Modern Construction
Both Gecko Envirocap and RRA exemplify Auckland Aggregates’ philosophy of practical sustainability, offering products not only environmentally aligned but also functionally superior and competitively priced.
Located in Ellerslie and serving the wider Auckland region, Auckland Aggregates provides:
Yard pickup and regional delivery
Product certifications upon request
Expert guidance on aggregate selection and retaining wall design
These offerings position Auckland Aggregates as a one-stop shop for sustainable infrastructure materials, supporting builders, contractors, landscapers, and councils seeking smarter ways to build and maintain.
Enquiries & Supply
To learn more about how Gecko Envirocap and RRA can support your next project, contact our team at Auckland Aggregates or contact Dave Stringfield on 027 493 6076
