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Mammoth Skillion Sections

Mammoth Skillion sections are designed to be installed in the ceiling of homes or buildings where the roof and ceiling run in close parallel lines — where the ceiling lining is fitted to the bottom of the roof rafter. Uniquely, Mammoth Skillion sections are self-supporting without the need for battens or strapping ahead of plaster board being fitted. 

Made in New Zealand from thermally bonded polyester fibres, they are Red-List Free, moisture resistant and manufactured by a carboNZero certified organisation.

Product Range:

  • R2.9 (115mm thick)
  • R3.2 (165mm thick)
  • R3.6 (165mm thick)
Key Features
  • Mammoth skillion sections are self-supporting pre-plasterboard being fitted. No battens or strapping required
  • Mammoth products contain recycled polyester fibres. Mammoth skillion insulation uses up to 9,300 recycled plastic bottles per 100m²*
  • Mammoth skillion sections are BRANZ appraised (durability 50 years) and performance is guaranteed for 50 years
  • Mammoth is safe and easy to work with. No precautions are required for handling the product. It will not cause irritation when tear to length or cut with shears
  • Mammoth will absorb noise to create a quieter environment
  • Mammoth products have no added chemicals, free from 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 are made in a near zero waste production process and are fully recyclable

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

Declare LBC Red List Free
Declare LBC Red List Free
NZ Made
NZ Made
NZ-Owned Business
NZ-Owned Business
Recycled Content (Pre-Consumer)
Pre-Consumer Recycled Content
Scope of Use

Mammoth Skillion sections are designed to be installed in the ceiling of homes or buildings where the roof and ceiling run in close parallel lines — where the ceiling lining is fitted to the bottom of the roof rafter.

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:

  • Clause 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.
  • Clause E3 Internal Moisture: Performance E3.3.1. Mammoth Insulation will contribute to meeting this requirement. See Paragraphs 13.1 and 13.2.
  • Clause F2 Hazardous Materials: Performance F2.3.1. Mammoth Insulation meets this requirement and will not present a health hazard to people.
  • Clause 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, 1994, p18
  • Fire Testing:
    • AS1530 Part 3: Ignitability (0), Spread of Flame (0), Heat Evolved (0) & Smoke Developed (3)
    • AS/NZS60695.2.11 - Glow wire flammability test (passed)
    • AS/NZS60695.11.5 - 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 (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
Skillion Sections Data Sheet
BRANZ Appraisal 797

No 797 [2020]

carboNZero certification
Declare Mammoth
NZ Green Building Council Membership
Skillion Roof Sections Installation Guidelines
Mammoth Insulation Warranty
New Build 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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