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Mammoth Airlay Insulation

Mammoth airlay insulation is made in New Zealand from lofted, thermally bonded polyester fibres. It's unique properties arise from the manufacturing process, whereby the fibres are completely randomised rather than the traditional layering.

This provides for differing structural properties of the product, enabling it to support itself within a cavity by simply squeezing the section in place. This seamless fit supports higher thermal performance across the system by retaining nominal thickness and a smooth, seamless finish (without tucks, gaps or creases).

Key Features
  • Mammoth wall insulation creates a healthier, more comfortable home or work environment — costing less to heat and cool
  • Mammoth Airlay insulation is manufactured in sections which are friction fitted between joists/dwangs — removing the need for strapping or staples
  • Mammoth Airlay wall products help support higher thermal performance across the system
  • Mammoth is safe and easy to work with. No precautions are required for handling the product
  • Mammoth products contain recycled polyester fibres. Mammoth wall section insulation uses up to 15,600 recycled plastic bottles per 100m²*
  • Mammoth will absorb noise to create a quieter environment
  • Mammoth products are chemical free, with no formaldehyde or insecticides
  • Mammoth products are moisture resistant
  • Mammoth products are Red List Free — International Living Future Institute
  • Manufactured by InZone Industries Ltd — a carboNZero certified organisation. Mammoth products contact recycled polyester fibres. The recycled fibre used by Mammoth comes from recycled plastic bottles
  • Mammoth products are made in a near zero waste production process and are fully recyclable


* Estimate based on 500ml plastic bottles (16.2g each).

Eco Choice Aotearoa (ECNZ) Licensed
ECNZ Licensed
Recycled Content (Pre-Consumer)
Pre-Consumer Recycled Content
LBC Red List Free
LBC Red List Free
NZ Made
NZ Made
NZ-Owned Business
NZ-Owned Business
Scope of Use

Mammoth airlay, thermal insulation which is suitable for underfloors, walls and ceilings (skillion roof) and is friction fitted between joists/dwangs to create a smooth, seamless fit.


Statement of Building Code Compliance

In the opinion of BRANZ, Mammoth Insulation if designed, used, installed and maintained in accordance with the statements and conditions of this Appraisal, will meet or contribute to meeting the following provisions of the NZBC:

  • B2 Durability: Performance B2.3.1 (a) not less than 50 years and B2.3.1 (b) 15 years.  Mammoth insulation will meet this requirement.  See Paragraph 8.1
  • E3 Internal Moisture: Performance E.3.3.1.  Mammoth insulation will contribute to meeting this requirement.  See Paragraphs 13.1 and 13.2
  • F2 Hazardous Building Materials: Performance F2.3.1.  Mammoth insulation meets this requirement and will not present a health hazard to people.
  • H1 Energy Efficiency: Performance H1.3.1 (a) and H1.3.2 E.  Mammoth insulation will contribute to meeting these requirements.  See Paragraphs 14.1 and 14.2.
Other Performance Attributes
  • Performance is guaranteed for 50 years
  • Non-toxic and Non-irritant: OSH Health and Safety Guidelines for the Selection and Safe Handling of Synthetic Mineral Fibres.  Department of Labour, 1194, P18
  • Fire Testing:
    • AS1530 Part 3 — Ignitability (0), Spread of Flame (0), Heat Evolved (0) and Smoke Developed (3)
    • AS/NZS 60695.2.11 — Glow wire Flammability test (passed)
    • AS/NZS 60695.11.5 — Needle-flame test (passed)
  • VOC Emission Test: Total VOC < 0.005mg/m³ (level below detection) and Formaldehyde < 0.009mg/m³ (level below detection)
  • Non Corrosive: AS/NZS4859.1 (Polyester has alkalinity of PH7.8
  • Vermin Resistant: not a food source for vermin (and not treated).
B2 Durability compliant
E3 Internal Moisture compliant
Internal Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
H1 Energy Efficiency compliant
Energy Efficiency
BRANZ Appraised
BRANZ Appraised
BRANZ Appraisal 797

No 797 [2020]

carboNZero certification
Declare Mammoth
NZ Green Building Council Membership
Airlay Sections Installation Guidelines
Mammoth Insulation Warranty
New Build Brochure
Wall (Airlay insulation) Brochure

Mammoth Modern Insulation is part of InZone Industries Ltd, a carboNZero certified organisation that manufactures polyester insulation products for the building, construction, and residential markets.

Product Enquiries

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