Why Choose Mammoth Insulation?

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.

Why Choose 
Mammoth Modern Insulation?

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

Mammoth 100% 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 Modern Insulation is a well-established brand in New Zealand, has been in the marketplace for over 25 years, and is proudly manufactured by InZone Industries Holdings Ltd.  

Available in soft roll-form blankets and self supporting friction-fit segments (sections, pads) Mammoth polyester thermal and acoustic insulation is safe to use, doesn't slump and is chemical free. 

Mammoth is soft, non itch, non toxic, easy to use and install. It is made from the same polyester as in your pillows and duvets, and is respiratory safe.

Our commitment to sustainability and creating better environments is paramount to how we do business. Made from recycled plastic, including bottles and containers, everything from our insulation offcuts and packaging is recyclable and can be reused as part of our FREE TakeBack & ReUse recycling programme.

Mammoth insulation is perfect for architects and specifiers, builders, developers and homeowners working on:

Backed by a 90 year warranty when installed correctly, not only is Mammoth recyclable at end of life, Mammoth also delivers long-term performance that’s better for people, buildings, and the planet. Mammoth insulation also supports local jobs while reducing transport emissions.

Reasons to use Mammoth Insulation with Confidence​

Huge Product Range

Mammoth has a wide range of ceiling, roof, wall and underfloor blanket and segment insulation in varying widths and strengths to suit most thermal and/or acoustic applications.

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.


Non Corrosive

Will not affect electrical wiring underfloor. No conduit is needed on wiring unlike some other insulation products.

Recycled - Waste to Warmth

Mammoth insulation products contain recycled polyester fibres from recycled PET plastic. Mammoth's insulation uses up to 15,600 recycled PET plastic bottles per 100 sqm*.

* Based on 500ml (16.2g) PET bottles.

NZ Made, Zero Waste

NZ made,  Mammoth products are made in a zero waste production process - everything from packaging to product is recyclable at the end of its life.

Zero Ozone Depletion

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.

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!

Non-Itch, Easy to Install

Mammoth insulation is soft and non-toxic, so won't irritate or itch your skin so no need for protective gear like gloves, face masks and overalls. It is made from the same polyester as in your pillows and duvets, and is respiratory safe.

No Glues or Binders

Mammoth fibres are heat-bonded together - no glues or binders are added which can break down over time. 

Friction Fit - Doesn't Slump

Our unique Mammoth friction fit segments offer an unrivaled professional finish. Our self supporting insulation provides a smooth friction fit without gaps, creases or folds. Our dimensionally true friction fit segments simply squeeze between floor joists, rafters and wall framing with no need for staples or strapping.  Mammoth has the only Airlay insulation manufacturing plant in NZ. 

Moisture & Vermin Resistant

Unaffected by moisture, Mammoth insulation will continue to perform once dried out, and is moisture, mould, mildew and vermin resistant.


BRANZ Appraised

Most of Mammoth’s thermal insulation and acoustic products are BRANZ tested and appraised.  Mammoth meets the required provisions of the New Zealand Building Code. Download our BRANZ Appraisal (No. 797) and BRANZ Appraisal (No. 802).

90 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 90 years when installed correctly and adequately protected - giving you confidence in your home or building’s ongoing energy efficiency, health and comfort.


Installer Network

Mammoth insulation has a network of qualified installers nationwide as well as our national sales teams.


Easy to Handle & Cut to Size

Available in various sizes, blankets can easily be torn by hand or cut with a Tajima craft knife, and segments cut with a Bacho insulation hand saw or craft knife for easy fitting into spaces.

High Quality Performance

Due to the manufacturing and design process, installed Mammoth product typically offers higher installed performance (construction R-values) over traditional insulation, achieved with Mammoth’s unrivaled friction fit products.



Acoustic for Quiet Spaces

Our superior acoustic insulation will also help to reduce noise transfer, along with our exposed acoustic panel products which can be used to improve the reverberation time, creating a quieter, indoor environment.

Chemical Free - Red List Free

All of our Mammoth insulation products are Declare Red List Free which means no formaldehyde or pesticides are added.

Fire Safe

Mammoth has been independently tested and passed the NZ Building Code fire tests.  

SmartSpec, Masterspec & ProductSpec

Specification of Mammoth products is easy with full product details readily available on the latest SmartSpec specification tool, as well as MasterSpec and ProductSpec. 

ECO Choice Aotearoa

Most of our Mammoth insulation products are Eco Choice Aotearoa certified.  

NZ Green Building Council

Mammoth products contributes points towards Greenstar and Homestar ratings, supporting greener building practices and outcomes.

High Performer Building

Mammoth are members of High Performer Building who provide quality products for new constructions.  

Energy Efficient, Retains Loft

Mammoth polyester insulation helps create a more energy efficient building, costing less to heat and cool. Mammoth insulation will not slump over time.

Our Resource Centre for Downloads

Download our installation guidelines, brochures and more here.

Downloads

Helping all New Zealanders - commercial and residential

Architects 

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

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 Holdings 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 & ReUse Programme.
  • 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. E​nvironmental 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.
  • 90 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 90 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. 





Homeowners - new and existing homes

Whether you’re building new or want​ing to retrofit insulation into your existing home, we’ve got a Mammoth® insulation product to suit.  Mammoth's thermal insulation is a non-toxic, non-irritant 100% polyester insulation for your home's ceiling and underfloor.  

Mammoth thermal insulation improves the health, warmth and energy efficiency of all homes & buildings, and is a long-lasting solution that won't deteriorate or sag.

Mammoth polyester insulation helps create a high performance thermal envelope for homes and buildings so they are warmer and more energy efficient.

Thermal insulation of homes and buildings is mandated in the building code for new construction and, for existing homes, is compulsory for rental properties and extremely highly recommended for every other home to make them warmer and healthier.

A well-insulated home is a warmer home that saves on energy use and improves the health of New Zealanders. Mammoth home insulation delivers three core benefits:​

  • Comfort - Insulation prevents heat loss from your home in winter as well as from overheating in summer from the sun on your roof.
  • Health - A study by the Wellington School of Medicine confirmed that people who live in insulated homes are healthier.  
  • Energy efficiency - Most New Zealand homes need heating in winter and by limiting that heat loss you spend less money to be warm.

Install it yourself or have it installed by a professional installer - we can help arrange that.

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

Finance and funding options available

If you have an accessible roof space and/or underfloor, installing insulation is surprisingly easy and has an immediate effect on how comfortable your home is in both winter and summer.  

Insulation has such a positive effect on health that the New Zealand Government offers home insulation subsidies to help eligible homeowners retrofit insulation into their home. There are also a number of finance options we can discuss with you, including a 24 month interest-free offer, what some councils offer by letting you pay off your insulation via your regular council rates payments, and other payment options. Contact us to find out more.

DIYers

Mammoth is easy and safe to install yourself

Mammoth® polyester insulation is a great option for DIY insulation installers since the product is non-toxic and non-irritant. Unlike traditional insulation, you do not need protective clothing, gloves and face masks to handle Mammoth insulation.

Steps to install Mammoth Insulation

  1. Choose the right product type for the area you want to insulate. View our Product Range for ceiling, wall and underfloor options. If you need further technical information, click here to view the Mammoth product datasheets.
  2. Select the appropriate product R-value for your climate zone.
  3. Measure the joist widths to accurately order the correct sized wall and underfloor products. It pays to check all joist spacings as many homes have varying joist widths. 
  4. Calculate the number of square metres you require for each area you wish to insulate.
  5. Carefully read the installation instructions. Every product pack comes with the installation and fitting instructions. Alternatively, you can download them here. Getting it right matters, so please ensure you carefully read the instructions as they outline all recommended tools, cutting instructions, clearances and any hazards you may come across.
  6. Look up your local merchants to see where you can buy Mammoth products.

Would prefer someone else install it after all?

That's not a problem, we have a supply and/or install service for Mammoth insulation and more. 


Builders

Whether you're building a new home or doing a renovation, Mammoth makes it easy.

The easy, safer option for builders, Mammoth insulation creates warmer, healthier homes for families while creating easier, healthier work environments for builders.

  • It's soft, non-itch and non-toxic so no need for protective gear like gloves, face-masks and overalls. With no gloves required, handling the product is easier.
  • Polyester is not a potential food source so it has no pesticides either.
  • Wall and underfloor sections require no straps or staples (no risk of electrocution).
  • You can maximise thermal performance with a smooth finish without bunching, creases or folds.
  • Lifetime warranty - your customers will be happier with less toxins in their home and long-lasting effectiveness that carries a lifetime warranty when correctly installed and adequately protected.
  • There's a Mammoth product suitable for every new build or retrofit insulation project.
  • BRANZ Appraised - Mammoth meets the required provisions of the New Zealand Building Code. 
  • You can order the complete Mammoth range through your local building supplies merchant or to find out more Meet a Mammoth Rep.
  • Read more about our commitment to sustainability and our zero waste manufacturing processes to help our planet.

Mammoth services for the building trade

  • we can visit your business or building site to show you the product
  • we can quote off plans (both new build and existing) so you know exactly what to order
  • we can measure and quote on-site
  • we can provide a complete Mammoth Install Service using our trained, professional installers and auditors.

Find out more