Mammoth® polyester insulation is a long-lasting, high-performance material that is used extensively in New Zealand in new and existing residential and commercial properties.

Mammoth insulation is a well-established brand in New Zealand and is manufactured by InZone Industries Ltd.

10 reasons to specify Mammoth Insulation with confidence

Free H1 Calculations - Specify Mammoth in your new residential or commercial project and we'll prepare free H1 calculations for you as well as providing a certificate including the number of recycled plastic bottles used in your project.
Recycled - Mammoth insulation products contain recycled polyester fibres. The recycled fibre used by Mammoth comes from recycled PET plastic. Mammoth's insulation uses up to 15,600 recycled PET plastic bottles per 100 sqm*. It's safe to handle & easy to install, as Mammoth is non-irritant and non-toxic so no need for gloves and masks.
Recyclable - everything from product and packaging, including waste product from manufacturing, is put back into the process and can be reused. Read more about our TakeBack Scheme.
carbonreduce Certified Manufacturer - Mammoth Insulation is manufactured by InZone Industries Ltd, NZ's Toitū carbonreduce certified insulation manufacturing organisation.
Sustainable Choice - Mammoth products are made in a zero waste production process and have an ODP of zero. Mammoth products are Declare Red List Free, many Mammoth products carry Eco Choice Aotearoa (prev. Environmental Choice) certification, and most thermal and acoustic products are BRANZ Appraised.
Self supporting sections for a better fit - Mammoth has the only Airlay insulation manufacturing plant in New Zealand. It's designed to assist high-quality installation devoid of folds, creases and gaps so that the product’s thermal performance is not compromised.
50 Year Warranty - Mammoth Insulation will not slump or degrade. With no added chemicals to break down over time, Mammoth gives assured long-lasting performance for 50 years when installed correctly. Unaffected by moisture, Mammoth will continue to perform once dried out.
Smartspec, MasterSpec & Product Spec - Specification of Mammoth products is easy with full product details readily available on the latest SmartSpec specification tool as well as on MasterSpec and ProductSpec.
Download our installation guidelines, brochures and more - We have a range of technical and reading material available here.
Nationwide Installers - Mammoth has a national sales team as well as a national installer network.

Read more about our commitment to sustainability and our zero waste manufacturing processes to help our planet.

Join the network of architects and designers who have been won-over by the superior benefits of Mammoth Modern Insulation.

Free H1 Calculations

We can help with our free H1 Thermal Calculations Service

Product Range

View our range of thermal & acoustic insulation designed for superior fit and maximum performance.

A Sustainable Choice

Our commitment to sustainability is 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.

Feedback from Architects

“Thanks so much for coming out yesterday – it was great to learn more about your product. I have not encountered the level of service you offer from any other insulation supplier, and I believe that good service still goes a long way in the market place. I pitched your product to a current client this morning for their proposed beach house at Coromandel, and you will be pleased to know that they unreservedly agreed to it. So I will be specifying it on the drawings and advising you of the builder as soon as one is confirmed.” Kathy Torkington, Personality Plans

“Done and dusted in 5 hours! Good to use, no dust in the eyes. Way easier and less itchy than a glass batt.” Daniel King, Architects 44 (re self-install of Mammoth underfloor sections)

“My son (11) and I spent a few hours under the house on Saturday, and he had another go yesterday afternoon. In short I think I would have to say it was child’s play. Very simple, quick and no mess, compared to the mess of Expol I have under the house from the sections I have done before. Got half the house done in a few hours, compared to the day of swearing and cursing with the ¼ of the house I did with Expol.” James Blackburne, Architects 44 (re: Mammoth Multi under floor)

“The installation of the product was very straightforward. Having worked with mostly fibre glass bats and blanket intermittently for over the last thirty years - I can say this was easily the most user friendly insulation product and the easiest & quickest to install. Working at a slow and steady pace, I had the 4 bales of Multi in place under the floor within 3 hours, including time for a coffee break as well as set up and clean up! (some assistance from my 12 year old who enjoyed the experience of crawling around under the floor more than I did!). The product is excellent - sized accurately for good friction fit, no irritation or dust and a consistently neat and tidy installation. I have great confidence in recommending the product to our clients and specifying it on our projects.” Peter Beaumont, Director, Bell Kelly Beaumont Team Architects Ltd

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SPECIFYING MAMMOTH IN YOUR NEXT PROJECT

Specifying Mammoth polyester insulation products for your customers is easy and assured.