Steel - A Long Life and Infinitely Recyclable

COLORSTEEL® is strong, durable and resilient to New Zealand's harsh climate. Its long lifespan helps conserve resources and energy that may otherwise be invested in products with a shorter life span. COLORSTEEL® requires minimal maintenance helping to deliver a low carbon footprint over its useful life.

Steel is an essential ingredient in helping New Zealand’s transition to a low carbon economy. When calculating full life cycle emissions of building materials, including those associated with maintenance, demolition and waste, steel is very unique. While embodied carbon is definitely important, there are other key components to reducing the environmental impact of construction, including extending the lifespan of materials and reducing construction waste. It’s important to consider:

  • Building performance & longevity: Increased life spans of buildings will mean the embodied carbon associated with their construction is extended over a longer time. The longevity and durability of steel means buildings constructed from steel have a longer useful life than other building materials.

  • As a building material, in many cases there is no ready substitute: Steel is extremely ductile (essential for earthquake prone areas) and fire resistant. There is no foreseeable future where we don’t need steel.

  • Circular economy: Steel can be recovered and recycled from demolished buildings resulting in almost no construction waste. As steel is infinitely recyclable, it is uniquely positioned to contribute to a circular economy.

  • Steel can be prefabricated: Prefabrication of steel contributes to improved construction time and cost efficiencies. It also contributes to reduced construction material waste. 

More to Environmental Sustainability Than Just Our Carbon Footprint

We are always exploring potential de-carbonising technologies. While there is no current viable alternative to carbon-based steel production, at NZ Steel, the home of COLORSTEEL® we are committed to producing steel in the most sustainable way possible. We are reducing our environmental impact by:

  • Establishing our own GHG emissions reduction targets. We are committed to a 12% reduction in our scope 1 and scope 2 greenhouse gas emission intensity for our iron and steelmaking facilities by 2030.

  • Utilising co-generation & renewables. 92% of the NZ Steel Glenbrook site electricity comes from renewable sources and from co-generation on-site from off-gases and waste heat from iron making.

  • Recycling 98% of our water. Over 98% of the water we use is recycled from our own processes.

  • Producing 60% of our own electricity. 60% of the electricity used is produced on site from recycled gases.

  • Following strict environmental standards. NZ Steel is certified to the rigorous ISO14001 and Environmental Choice standards, so you can be assured our environmental impact is being measured and improved, and that we are recognised as providing sustainably preferable products.

  • Developing a credible Environmental Product Declaration. Our COLORSTEEL® EPD allows us to understand and communicate our emissions intensity in a transparent way.

Environmental Certificates

Eco Choice Aotearoa - Previously known as Environmental Choice NZ, Eco Choice Aotearoa is New Zealand's official ecolabel. More than listing sustainable products for green homes or businesses, Eco Choice's Type I ecolabel offers strong, independent proof of environmental best practice for those products and services that bear the mark. COLORSTEEL® products have been assessed and awarded the Eco Choice Aotearoa license. 

World Steel Association - The World Steel Climate Action Recognition Programme recognises steel producers that have fulfilled their commitment to participate in the worldsteel CO2 emissions data collection programme. The data collection programme is at the core of the steel industry's global steel sectoral approach to climate change. Based on a common methodology, definitions and agreed boundaries, the data collection programme enables individual steel plants to compare themselves against both average and best performance and identify its scope for improvement.

Read our most frequently asked COLORSTEEL® sustainability questions

What is Eco Choice Aotearoa and Environmental Choice NZ?
What is ISO 14001?
What is an EPD?
What is the World Steel Association?
What is the World Steel Association Climate Action Programme?
What is New Zealand Green Building Council (NZGBC)?
What is Homestar?
What is Green Star?
What are MAT-1, MAT-8 and Credit 21?
What are Categories, Credits, Points and Criteria?
How do points result in a ‘Star Rating’ under Green Star and Homestar?
What is the Sustainable Steel Council?

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