Free H1 VM1 Energy Modelling for NZ Projects

Modelling is the most accurate way to demonstrate compliance, as it accounts for real-world factors such as building orientation, insulation build-ups, solar gains and losses, shading, and local weather data.

This provides detailed insights into winter heating demand, summer cooling demand, overall building performance, and potential overheating — far beyond what schedule or calculation methods can offer.

Proudly locally made using fibres from recycled PET plastic, Mammoth insulation offers a comprehensive range of friction-fit sections (pads/segments) and blanket products designed to outperform traditional insulation. The friction-fit range minimises gaps and creases, which can significantly compromise performance — after all, insulation effectiveness isn’t just about R-value, it’s directly related to its fitment, as even a 1mm gap against framing can reduce R-value by approximately 3%.

If you’d like to explore our free H1 modelling service or get expert advice on insulation build-ups that balance cost, practicality, and compliance outcomes, contact Jeremy at [email protected] or Justin at [email protected].

Mammoth Ceiling Insulation

Mammoth Insulation

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Mammoth ceiling blanket insulation is made in New Zealand from lofted, thermally bonded polyester fibres.

LBC Declare Red List Free

NZ Made

NZ-Owned Business

Post-Consumer Recyclable Content

Pre-Consumer Recycled Content

Mammoth ceiling blanket insulation is designed to be used as thermal insulation in timber framed or part framed ceilings of domestic and commercial buildings.

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.

BRANZ Appraised

Eco Choice Aotearoa

Homestar / Green Star

Mammoth Wall Insulation

Mammoth Insulation

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Mammoth wall insulation is made in New Zealand from 100% lofted, thermally bonded polyester fibres.

LBC Declare Red List Free

NZ Made

NZ-Owned Business

Post-Consumer Recyclable Content

Pre-Consumer Recycled Content

Mammoth wall insulation is designed for use as thermal insualtion in timber framed wall cavities.

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.

BRANZ Appraised

Eco Choice Aotearoa

Homestar / Green Star

Test Results

Mammoth Skillion Sections

Mammoth Insulation

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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.

LBC Declare Red List Free

NZ Made

NZ-Owned Business

Post-Consumer Recyclable Content

Pre-Consumer Recycled Content

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.

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.

BRANZ Appraised

Mammoth Underfloor Insulation

Mammoth Insulation

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Mammoth underfloor insulation is made in New Zealand from 100% lofted, thermally bonded polyester fibres.

LBC Declare Red List Free

NZ Made

NZ-Owned Business

Post-Consumer Recyclable Content

Pre-Consumer Recycled Content

Mammoth underfloor sections are designed for homes with semi-enclosed underfloors
Mammoth underfloor blanket is designed for homes with fully enclosed underfloors

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.

BRANZ Appraised

Eco Choice Aotearoa

Homestar / Green Star

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Passive Over-Heating of Homes

Surface Water Sumps: Their Location, Sizing and Function

Categories

Popular Products

Popular Brands

Features

Sections

This Month

The Creative Art of Downsizing

Creating a Distinctive Architectural Feature with Mario Romano Walls

AvanTech YOU Illumination: Customisation in a New Light

SECTIONS

Mammoth Insulation: Superior Thermal Performance, Unrivalled Fit, Free Energy Modelling Service

News from Mammoth Insulation

Recycling Insulation Waste Right from the Site

The Short and Sharp on H1 Changes and Mammoth's Free H1 Compliance Service

Low Pitch Truss Roofs and Shallow Rafters with Mammoth Insulation

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