Wall Insulation
Mammoth® wall insulation is made from long lasting 100% polyester insulation
& is available in blankets and friction-fit segments.
DOWNLOAD Datasheets, Installation Guidelines, Warranty and other information here..
Mammoth® wall insulation is made from long lasting 100% polyester insulation. It is non-irritant, non-toxic and is warranted not to sag over time so to keep homes warmer and more energy efficient for longer. Depending on the wall space, Mammoth has friction-fit wall sections, soft roll-form wall blankets, or masonry wall insulation to suit.
Mammoth Wall Section Insulation
High performance, Mammoth wall sections are semi-rigid polyester insulation designed to be friction fitted into the wall cavity. See product range here.
Creating a seamless, smooth fit without tucks, creases or gaps, Mammoth wall sections provide both thermal and acoustic benefits for homes and buildings. Mammoth wall sections are made on New Zealand's only airlay insulation plant - accept no substitutes. Mammoth products contain recycled polyester fibres. Mammoth wall section insulation uses up to 15,600 recycled PET plastic bottles per 100sqm*.
For walls requiring roll form insulation, there is the option of our Mammoth Wall Blanket or for masonry or concrete walls, we have the option of our Masonry Insulation.
Key Features:
Alongside Mammoth’s sustainability credentials, recyclability, trusted accreditations and 90-year warranty, these key features set our insulation apart:
- High performance semi-rigid 100% polyester sections providing thermal and acoustic benefits for residential and commercial applications.
- Self-supporting for a smooth friction fit without creases, folds or tucks.
- Easy and safe to install - simply squeezes between joists with no need for staples.
- With a large product range of various R values, Mammoth sections come in pre-cut sections of varying widths and lengths.
- Superior thermal performance for improved energy efficiency and comfort. Assists in absorbing noise to create a quieter environment.
- Mammoth wall insulation uses up to 15,600 recycled PET plastic bottles per 100sqm* (based on 16.2g 500ml PET Bottles).
- Safe and easy to work with, sections can easily be cut using wide blade craft knives or specialised insulation saws.
- Unaffected by moisture, Mammoth will continue to perform once dried out. Mammoth is moisture, mould, mildew and vermin resistant.
- Made in New Zealand using a zero-waste manufacturing process.
- FREE H1 calculations when specifying Mammoth for commercial and residential projects.
- Heat bonded - no glues or binders that can break down so it won't sag or settle over time.
- Red List Free - no formaldehyde or pesticides added.
- Safe, non-itch, odourless, non-toxic and respiratory safe - no precautions are required for handling the product.
- Most wall sections are BRANZ 797 Appraised, compliant with the NZ Building Code and are Eco Choice Aotearoa certified.
- Mammoth products are 100% recyclable through Mammoth’s free TakeBack & ReUse Programme.
- Mammoth insulation products have an Ozone Depleting Potential (ODP) of zero, meaning no ozone depleting substances are present in the product or used in direct manufacture of the product.
- Independently fire tested and compliant with NZ Building Code requirements.
- See list of Technical Attributes (including NZBC, Product Safety and more).
- Member of NZ Green Building Council and High Performance Building.
- Long lasting, Mammoth insulation is backed by a 90 year manufacturer's warranty.
- Nationwide installer network and technical support.
- Available on SmartSpec, MasterSpec and ProductSpec for easy specification.
Downloads:
Datasheet Installation Guidelines Warranty Other
Mammoth Wall Blanket Insulation
Mammoth wall insulation is a soft polyester blanket in roll form - ideal for commercial buildings.
Mammoth® wall insulation is available in two forms: blankets and wall sections. Mammoth wall blankets are rolls of lofted 100% polyester insulation designed to be stapled to the top dwang to fit snugly between wall studs in residential and commercial building projects. They are ideally suited to long unimpeded wall cavities including steel framed walls. See product range here.
Mammoth wall insulation is made from heat-bonded polyester fibres that are moisture resistant and won't sag or settle over time. See also Mammoth Wall Sections and Mammoth Masonry Wall Sections which are self-supporting for a superior fit.
Mammoth products contain recycled polyester fibres. Mammoth wall blanket insulation uses up to 5,600 recycled PET plastic bottles per 100sqm*.
Key Features:
Alongside Mammoth’s sustainability credentials, recyclability, trusted accreditations and 90-year warranty, these key features set our insulation apart:
- Soft, roll-form 100% polyester insulation blanket for wall cavities to help absorb noise. .
- Mammoth wall blanket insulation uses up to 5,600 recycled PET plastic bottles per 100sqm* (based on 16.2g 500ml PET Bottles).
- Unaffected by moisture, Mammoth will continue to perform once dried out. Mammoth is moisture, mould, mildew and vermin resistant.
- Lightweight and easy to cut, fit and install - can be torn to length or cut with shears. Available in varying widths and lengths to suit most applications.
- Superior thermal performance for improved energy efficiency and comfort.
- Made in New Zealand using a zero-waste manufacturing process.
- FREE H1 calculations when specifying Mammoth for commercial and residential projects.
- Heat bonded - no glues or binders that can break down so it won't sag or settle over time.
- Red List Free - no formaldehyde or pesticides added.
- Safe, non-itch, odourless, non-toxic and respiratory safe - no precautions are required for handling the product.
- BRANZ 797 Appraised, compliant with the NZ Building Code and are Eco Choice Aotearoa certified.
- Mammoth products are 100% recyclable through Mammoth’s free TakeBack & ReUse Programme.
- Mammoth insulation products have an Ozone Depleting Potential (ODP) of zero, meaning no ozone depleting substances are present in the product or used in direct manufacture of the product.
- Independently fire tested and compliant with NZ Building Code requirements.
- See list of Technical Attributes (including NZBC, Product Safety and more).
- Member of NZ Green Building Council and High Performance Building.
- Long lasting, Mammoth insulation is backed by a 90 year manufacturer's warranty.
- Nationwide installer network and technical support.
- Available on SmartSpec, MasterSpec and ProductSpec for easy specification.
Downloads:
Mammoth Masonry Wall Insulation
Mammoth masonry wall insulation products are designed to support the thermal performance of masonry/concrete walls.
Made of 100% polyester, Mammoth® masonry wall insulation is 45mm thick to fit between masonry battens and are available in two forms: a R1.0 wall blanket and R1.3 wall sections. See product range here.
Mammoth products contain recycled polyester fibres. Mammoth masonry wall insulation uses up to 7,800 recycled PET plastic bottles per 100sqm*.
For high performance self-supporting polyester wall sections, we have Mammoth Wall Sections or for walls requiring roll form insulation, there is the option of our Mammoth Wall Blanket.
Key Features:
Alongside Mammoth’s sustainability credentials, recyclability, trusted accreditations and 90-year warranty, these key features set our insulation apart:
- High performance semi-rigid airlay 100% polyester sections or carded polyester blanket.
- 45mm thick sections to fit between masonry battens.
- Self-supporting for a smooth friction fit without creases, folds or tucks.
- Easy and safe to install - simply squeezes between joists with no need for staples.
- Provides thermal and acoustic benefits for residential and commercial applications.
- Mammoth masonry wall insulation uses up to 7,800 recycled PET plastic bottles per 100sqm* (based on 16.2g 500ml PET Bottles).
- Mammoth sections come in pre-cut sections of varying widths and lengths.
- Safe and easy to work with, sections can easily be cut using wide blade craft knives or specialised insulation saws.
- Unaffected by moisture, Mammoth will continue to perform once dried out. Mammoth is moisture, mould, mildew and vermin resistant.
- Superior thermal performance for improved energy efficiency and comfort.
- Made in New Zealand using a zero-waste manufacturing process.
- FREE H1 calculations when specifying Mammoth for commercial and residential projects.
- Heat bonded - no glues or binders that can break down so it won't sag or settle over time.
- Red List Free - no formaldehyde or pesticides added.
- Safe, non-itch, odourless, non-toxic and respiratory safe - no precautions are required for handling the product.
- Mammoth masonry insulation products are BRANZ 797 Appraised, compliant with the NZ Building Code and are Eco Choice Aotearoa certified.
- Mammoth products are 100% recyclable through Mammoth’s free TakeBack & ReUse Programme.
- Mammoth insulation products have an Ozone Depleting Potential (ODP) of zero, meaning no ozone depleting substances are present in the product or used in direct manufacture of the product.
- Independently fire tested and compliant with NZ Building Code requirements.
- See list of Technical Attributes (including NZBC, Product Safety and more).
- Member of NZ Green Building Council and High Performance Building.
- Long lasting, Mammoth insulation is backed by a 90 year manufacturer's warranty.
- Nationwide installer network and technical support.
- Available on SmartSpec, MasterSpec and ProductSpec for easy specification.
Downloads:
Datasheet Installation Guidelines Warranty Other
Wall Product Range
| WALL SECTIONS PRODUCT RANGE | PACK SIZES | |||||||
|---|---|---|---|---|---|---|---|---|
![]() | Density (kg/m3) | R-Value | Nominal thickness (mm) | Dimensions (mm) | Pieces per pack | Area per pack (m2) | ||
| Wall Sections | ![]() | ![]() | 16.67 | R 1.9 | 90 | 360 x 760 | 9 | 2.46 |
![]() | ![]() | 16.67 | R 1.9 | 90 | 560 x 760 | 6 | 2.55 | |
![]() | ![]() | 60.00 | R 2.0 | 70 | 360 x 760 | 12 | 3.28 | |
![]() | ![]() | 60.00 | R 2.0 | 70 | 560 x 760 | 8 | 3.40 | |
![]() | ![]() | 22.22 | R 2.0 | 90 | 360 x 760 | 9 | 2.46 | |
![]() | ![]() | 22.22 | R 2.0 | 90 | 560 x 760 | 6 | 2.55 | |
![]() | ![]() | 26.67 | R 2.2 | 90 | 360 x 760 | 9 | 2.46 | |
![]() | ![]() | 26.67 | R 2.2 | 90 | 560 x 760 | 6 | 2.55 | |
![]() | ![]() | 40.00 | R 2.5 | 90 | 360 x 760 | 9 | 2.46 | |
![]() | ![]() | 40.00 | R 2.5 | 90 | 560 x 760 | 6 | 2.55 | |
![]() | ![]() | 15.00 | R 2.8 | 140 | 360 x 760 | 18 | 4.92 | |
![]() | ![]() | 15.00 | R 2.8 | 140 | 560 x 760 | 12 | 5.10 | |
![]() | ![]() | 20.70 | R 3.2 | 140 | 360 x 760 | 18 | 4.92 | |
![]() | ![]() | 20.70 | R 3.2 | 140 | 560 x 760 | 12 | 5.10 | |
![]() | ![]() | 25.71 | R 3.6 | 140 | 360 x 760 | 18 | 4.92 | |
![]() | ![]() | 25.71 | R 3.6 | 140 | 560 x 760 | 12 | 5.10 |
| WALL BLANKET PRODUCT RANGE | PACK SIZES | |||||||
|---|---|---|---|---|---|---|---|---|
![]() | Density (kg/m3) | R-Value | Nominal thickness (mm) | Dimensions (mm) | Pieces per pack | Area per pack (m2) | ||
| Wall Blanket | ![]() | ![]() | 21.67 | R 2.2 | 90 | 360 x 9870 | 2 | 7.11 |
![]() | ![]() | 21.67 | R 2.2 | 90 | 560 x 10800 | 1 | 6.05 | |
![]() | ![]() | 10.71 | R 2.6 | 140 | 380 x 8550 | 4 | 13.00 | |
![]() | ![]() | 10.71 | R 2.6 | 140 | 580 x 7470 | 3 | 13.00 |
| MASONRY WALL PRODUCT RANGE | PACK SIZES | |||||||
|---|---|---|---|---|---|---|---|---|
![]() | Density (kg/m3) | R-Value | Nominal thickness (mm) | Dimensions (mm) | Pieces per pack | Area per pack (m2) | ||
| Masonry Wall - Section | 47.10 | R 1.0 | 35 | 540 x 1200 | 10 | 6.48 | ||
| Masonry Wall - Blanket | ![]() | 16.67 | R 1.0 | 45 | 580 x 12930 | 2 | 15.00 | |
| Masonry Wall - Section | ![]() | ![]() | 42.22 | R 1.3 | 45 | 360 x 2400 | 9 | 7.78 |
| Masonry Wall - Section | ![]() | ![]() | 42.22 | R 1.3 | 45 | 560 x 2400 | 6 | 8.06 |
Wall Technical Details
Technical Attributes | Standard | Test Result |
|---|---|---|
| New Zealand Building Code | ||
Durability | Clause B2.3.1 (a) (b) Clause B2.3.2 | Ref: BRANZ Appraisal No 797(1) |
Internal Moisture | Clause E3.3.1 | Ref: BRANZ Appraisal No 797(1) |
Hazardous Building Materials | Clause F2.3.1 | Ref: BRANZ Appraisal No 797(1) |
Energy Efficiency | Clause H1.3.1(a) Clause H1.3.2 E | Ref: BRANZ Appraisal No 797(1) |
| Product Safety | ||
Non Toxic | OSH Health and Safety Guidelines(2) | Polyester products are ‘non-toxic’ |
Non Irritant | OSH Health and Safety Guidelines(2) | Polyester products are ‘non-irritant’ |
Respiratory Safe | Polyester fibres are non-respirable | |
Fire Test(3) | AS/NZS60695.2.11 | Passed - Glow wire flammability test |
| AS/NZS60695.11.5 | Passed - Test flames (Needle-flame test) | |
| ISO9705 | Group1S {Excludes R2.0 70mm and R3.6} | |
VOC Emission Safe(4) | Total VOC ≤ 0.5mg/m(4) | < 0.005mg/m3 - level below detection(5) |
| Formaldehyde ≤ 0.06mg/m(4) | < 0.009mg/m3 - level below detection | |
Glue Free | Free from all glues | |
| Other | ||
Thermal Performance | AS/NZS4859.1 | Only applies to products with declared R-values. |
Non Corrosive | Materials composed entirely of polyester are regarded as non-corrosive and are exempt from testing. Alkalinity of pH 7.8. | |
Moisture Resistant(6) | ASTM C1104 | Absorption rate of less than 0.2% by weight. |
Vermin Resistant | Not a food source for vermin (and not treated). | |
Odourless | Mammoth is odourless and will not absorb odours. |
(2) Occupational Safety and Health Service. Health and Safety Guidelines for the Selection and Safe Handling of Synthetic Mineral Fibres, Dept of Labour, 1994.
(3) Can safely cover IC-rated downlights. If luminaire rating is unknown, minimum clearance of 100mm to any insulation is required.
(4) Mammoth has been tested under ASTM D5116. Based on test results for a product with similar nominal weight.
(5) All individual VOCs were less than their threshold limit values. Carcinogens and reproductive toxins were not identified as part of the VOCs.
(6) If the products should become wet the full thermal performance will be restored once the product is dried completely.
Contact us today
If you need more information, a quote or would like to chat to a Mammoth Insulation Trade Representative, please contact us here.

