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Mammoth Underfloor Insulation

Mammoth Underfloor insulation is made in New Zealand from 100% lofted, thermally bonded polyester fibres. Mammoth Multi and NOVAfloor underfloor airlay sections are designed to provide thermal insulation for the underfloor by friction fitting between floor joists, hard up against the floorboards. Both Mammoth Multi and NOVAfloor do not require mechanical fixings or staples to hold it in place.

Key Features
  • Mammoth Multi Product Range: R1.9 (370mm, 425mm, 475mm & 580mm wide sections x 1140mm lengths)
  • Mammoth NOVAfloor Product Range: R1.4 (375mm, 435mm, 485mm, 535mm & 580mm wide sections x 1200mm lengths)
  • Mammoth Underfloor blanket Product Range: R1.5 and R1.8 (450mm, 510mm & 600mm wide blanket x varying lengths)
  • Mammoth NOVAfloor and Multi Underfloor are manufactured in sections — friction fit, airlay sections can be fit snug up against the floor. There is no need for staples, removing the danger of electrocution
  • Mammoth polyester products are backed by a 50 year manufacturer's warranty
  • No precautions are required for handling Mammoth. It will not cause irritation when touched and it gives off no fumes or odours
  • Mammoth products are chemical free — no formaldehyde or insecticides. Mammoth products are safe and easy to work with
  • Mammoth Underfloor sections helps to reduce the noise of foot fall on floorboards and assists in creating a quieter internal environment
  • Mammoth products are moisture resistant
  • All Mammoth products are Red List Free — International Living Future Institute
  • Manufactured by InsulPro Manufacturing — a carboNZero certified organisation
  • Mammoth products are made in a near zero waste production process and are fully recyclable
  • Mammoth NOVAfloor and R1.9 Multi underfloor sections are Environmental Choice certified
Environmental Choice (ECNZ) Licensed
ECNZ Licensed
Homestar / Green Star (Envirospec) Compliant
Homestar / Green Star
Recycled Content (Pre-Consumer)
Pre-Consumer Recycled Content
NZ Made
NZ Made
NZ-Owned Business
NZ-Owned Business
Red List Material Free
Red List Material Free
Scope of Use
  • Mammoth NOVAfloor is designed for use on homes with exposed underfloors — prone to high winds and extreme weather conditions
  • Mammoth Multi underfloor sections are designed for homes with semi-enclosed underfloors in areas less likely to experience high winds and cool conditions
  • Mammoth Underfloor blanket is designed for homes with fully enclosed underfloors
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
  • 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 Test:
    • 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
Data Sheet
Declare Accreditation
Environmental Choice License
Environmental Information
Independent Appraisal (BRANZ)
ISO Certification
ISO Certification
Installation and Operation

Mammoth modern insulation is manufactured by InsulPro, a New Zealand owned and operated manufacturer of polyester thermal and acoustic insulation for residential or commercial use.

Product Enquiries

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