Sustainability for
Better Environments
Sustainable by Design. Exceptional by Nature.
Our business is underpinned by a philosophy of creating better environments which extends to more than just the products we manufacture.
At Mammoth® Modern Insulation, everything we do is driven by a simple philosophy - creating better environments. That means more than just high-performance polyester insulation. It’s about how we operate as a business, how we manufacture our products, and how we help shape warmer, healthier, more energy-efficient buildings across New Zealand - all while protecting the largest environment of all - our planet.
Proudly NZ made, Mammoth Modern Insulation is 100% polyester thermal and acoustic insulation supplying the building, construction and residential markets. With our key focus on sustainability, we ensure that by design, everything we send to market can be recycled - from product to packaging.
Our Mammoth polyester insulation products have an Ozone Depleting Potential (ODP) of zero, meaning no ozone depleting substances are present in the product or used in direct manufacture of the product.
Sustainability is not an add-on for Mammoth. It is built into every fibre, every process, and every product we create. It is built into every stage - from raw materials to manufacturing to end of life recyclability.
We practice continuous improvement and adoption of a 'reduce, reuse, recycle' philosophy in our fibre product manufacturing processes.
So when you ask, why should I choose Mammoth Insulation, the reasons speak for themselves.
Our Reduce, Recycle, Reuse philosophy
Zero waste manufacturing - from waste to warmth
For our NZ made Mammoth Modern Insulation, we source the best polyester fibres and take recycled fibre from PET plastic bottles and more, which would otherwise end up in landfill as waste and manufacture it into polyester insulation.
An optimal blend of fibres for each product is created from a mixture of highly technical fibres for extra performance, recycled fibres for sustainability, and bi-component fibres for bonding.
Mammoth polyester insulation creates warmer, healthier homes and buildings. Our zero-waste manufacturing process and the rigorous Eco Choice labelling standards ensure our products meet high environmental performance criteria.
All Mammoth production waste, offcuts, and packaging are reused or recycled - nothing goes to landfill.
Mammoth is made from recycled plastic bottles
Mammoth's thermal and acoustic insulation is made from 100% polyester and uses up to 15,600 recycled PET plastic bottles per 100 sqm (based on 16.2g 500ml PET bottles).
Most of our Mammoth products are Eco Choice Aotearoa certified, with 65-94% of the raw material used being made from fibre manufactured out of recycled PET bottles.
Our commitment to sustainability is paramount to us and incorporated in the way we operate the business, our manufacturing processes and the way we help our customers create warmer, healthier, more energy efficient environments - all while protecting the largest environment of all, our planet.
We create insulation that delivers outstanding thermal and acoustic performance - without compromise.
Mammoth is 100% recyclable
100% recyclable, everything from offcuts, clean waste product and packaging is recyclable and can be returned, recycled and reused as part of our TakeBack & ReUse Programme from our various drop off locations. And even better, it's free!
Our insulation product is completely recyclable and the product must be uncontaminated and returned to our branch for recycling.
We take clean offcuts & returned product from the market and recycle them back into product. All plastics are baled and returned for recycling. We run it through a purpose built reclaim line where it reopens it back into a fibre form and we use this product as post-consumer recycled fibre.
This ensures valuable materials stay in circulation - and out of landfill.
Read more here.
New Zealand Made
Our Mammoth insulation products are proudly manufactured in NZ by InZone Industries Holdings Ltd - our parent company - in Auckland, reducing transport emissions and supporting the NZ economy.
In fact, we just celebrated our 25th anniversary of Mammoth Modern Insulation!
Since 2001, Mammoth has proudly helped kiwis create warmer, more comfortable and energy-efficient spaces, while continuing to lead the way with sustainable polyester insulation solutions. This milestone is a celebration of the passionate people behind the brand - our team, customers, partners and supporters who have been part of the journey.
Here’s to 25 years of making a difference, and to an even brighter, healthier and more sustainable future ahead. Read more here on the history of Mammoth and check out our video looking back on the last 25 years.
Eco Choice Aotearoa
Eco Choice Aotearoa (formerly Environmental Choice New Zealand) is the official environmental labelling programme. This programme, which commenced in 1992, operates independently from the government but the label is government owned and endorsed.
Since its commencement, the government has financially supported the scheme, both directly and indirectly.
Most of our Mammoth insulation products are Eco Choice certified.
Declare Red List Free
All of our Mammoth polyester insulation products are Red List Free for both our thermal and acoustic insulation products. This means our products are free from chemical binders, glues, pesticides and formaldehyde.
The Living Building Challenge developed a Red List of prohibited materials under the Declare Programme to provide transparency around the building products.
Declare is a ‘nutrition label’ for the international building industry and is a voluntary self-disclosure programme aiming for healthier and more ecological products in construction. Red List Free products are shown to be free from Declare’s red list of ingredients.
More reasons to trust Mammoth Insulation
- Zero Ozone Depletion Potential - Mammoth 100% polyester insulation products have an ODP of zero which means no ozone depleting substances are present in, or used in the direct manufacture of the product.
- BRANZ Appraised - Most of Mammoth’s thermal insulation and acoustic products are BRANZ appraised.
- NZGBC Member - Mammoth is a member of the NZ Green Building Council demonstrating commitment to green building practices in NZ. Mammoth insulation contributes points to the material requirements for the Greenstar and Homestar rating tools.
- High Performer Building - we are members of High Performer Building who provide quality products for new constructions.
- Mammoth Insulation will not slump or degrade. With no added chemicals to break down over time, Mammoth gives assured long-lasting performance for 90 years when installed correctly and adequately protected - giving you confidence in your home or building’s ongoing energy efficiency, health and comfort.
- Strong industry partnerships - we work with leading organisations (BRANZ, EECA, Kāinga Ora, NZGBC), ensuring best practice and innovation.
- Acoustic performance - Mammoth insulation provides effective sound absorption, improving comfort in residential and commercial spaces.
- Will not slump or settle - our polyester fibres are head bonded, no glues or binders, so they hold their shape, ensuring consistent performance over time.
- Easy to use and cut to size with craft knives or insulation saws. Blankets can also be torn.
- No chemicals, safe, non-itch, odourless and non-toxic - no precautions are required for handling Mammoth products.
- Healthier, safer homes & buildings - made from soft polyester fibres and Declare Red List Free, meaning no harmful chemicals are used.
- Improved indoor comfort - excellent thermal performance helps regulate temperature and reduce condensation for drier, healthier homes & buildings.
- Mammoth isn’t just insulation - it’s a smarter, safer, and more sustainable solution for New Zealand homes and buildings.
Why choose Mammoth Insulation
It's simple - read here for more information on why you should choose Mammoth insulation for your next project. Why Choose Mammoth
Our Resource Centre for Downloads
Download our installation guidelines, datasheets, brochures and more here. Downloads
Contact Us
Contact us to find out more and why Mammoth Insulation is your insulation product of choice.