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Appraisal number: 802 (2020)

Date issued: 2 Sep 2020

Mammoth™ Underfloor Insulation


Mammoth™ Underfloor Insulation is a medium-density, polyester thermal insulating material for use in suspended timber-framed floors. The insulation is pre-cut to suit a range of floor joist spacings.


Mammoth™ Underfloor Insulation has been appraised as a thermal insulation material for suspended timber-framed floors in new or existing domestic and commercial buildings.

Mammoth™ Underfloor Insulation is suitable for use under floors that have an enclosed perimeter foundation as defined in NZS 4246.

Technical literature

  • Underfloor Blanket Safety and Installation Guidelines
  • Underfloor Insulation Blanket TDS, 7 November 2019
  • Underfloor Insulation Sections TDS, 7 November 2019

Consenting instructions

Always refer to the Appraisal in full and the technical literature.

Appraisal holder

InZone Industries Ltd
Address: PO Box 204 289, Highbrook, Auckland
Phone: 09 273 2308

Marketer details