Underfloor Insulation
Mammoth® underfloor insulation is made from long lasting 100% polyester insulation
& is available in friction-fit segments, blankets and carpark panels.
DOWNLOAD Datasheets, Installation Guidelines, Warranty and other information here..
Mammoth® underfloor 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 underfloor space, Mammoth has friction-fit underfloor sections, soft roll-form underfloor blankets and carpark panels to suit.
Mammoth Underfloor Section Insulation
Mammoth underfloor insulation are self-supporting medium density pads that squeeze into place between joists without staples or other fixings.
Cut to a variety of widths, Mammoth® polyester underfloor insulation sections are moisture resistant, high performance options that are safer to install than stapled solutions. Our insulation sections have a range of R-values of up to R3.8 (when double layered). See Product Range here.
Mammoth products contain recycled polyester fibres. Mammoth underfloor section insulation uses up to 7,800 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:
- 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.
- Non-corrosive - will not affect electrical wiring underfloor.
- Superior thermal performance for improved energy efficiency and comfort. Assists in absorbing noise to create a quieter environment.
- Mammoth underfloor 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.
- 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 underfloor sections are BRANZ 802 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 Underfloor Blanket Insulation
Mammoth underfloor blanket is made from 100% polyester and is a great option for reducing heat loss through suspended timber floors.
Mammoth® underfloor blanket is recommended only for experienced installers or builders as the insulation is stapled into place between floor joists near electrical wiring. Mammoth polyester insulation is moisture resistant and so is the preferred option for suspended floors. See Product Range here.
Also available are high-performance, self-supporting, easy-to-install Mammoth underfloor sections with a higher R-value and our Carpark Panels.
Mammoth products contain recycled polyester fibres. Mammoth underfloor blanket insulation uses up to 3,300 recycled 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:
- 100% polyester carded thermal insulation in a soft, roll-form for residential and commercial applications.
- Non-corrosive - will not affect electrical wiring underfloor.
- Mammoth underfloor blanket insulation uses up to 4,250 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.
- All underfloor blankets are BRANZ 802 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 Carpark Panel Insulation
Mammoth carpark panel insulation is designed to improve the thermal performance of concrete carpark ceilings where there are residential and commercial buildings above. See Product Range here.
Designed to be fitted to concrete soffits/slabs, Mammoth® carpark panel insulation enhances the comfort and energy efficiency of buildings above carparks.
Mammoth carpark panels contour over uneven textures which are common place in concrete form work. The airlay manufacture of Mammoth Carpark Panels helps the insulation achieve a seamless fit that supports higher thermal performance across the system by preventing air movement between the insulation panel and the substrate.
Mammoth carpark panel insulation complies with provisions of the New Zealand Building Code (NZBC): AS/NZS 4859.1 for thermal performance and ISO 9705 for the material Group Number 1S for fire performance.
Key Features:
Alongside Mammoth’s sustainability credentials, recyclability, trusted accreditations and 90-year warranty, these key features set our insulation apart:
- Mammoth Carpark panels are high performance semi-rigid, airlay polyester insulation panels for concrete soffits and slabs
- 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.
- 100% polyester with thermal and acoustic benefits for residential and commercial applications.
- Group Number 1-S for fire performance.
- Mottled grey in colour.
- Mammoth Carpark Panels also assists in absorbing noise to create a quieter environment.
- Carpark Panel is designed for thermal application and colour contrasts are designed to blend in with the varying natural hues in concrete, as a result, the surface may have differing textures.
- Mammoth Carpark Panel is compliant with the Building Code of Australia C1.1 (AS ISO 9705) and the New Zealand Building Code C/VM (ISO 9705) as a surface lining material.
- 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.
- Mammoth carpark insulation panels are BRANZ 802 tested.
- 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.
- Member of NZ Green Building Council and High Performance Building.
- See list of Technical Attributes (including NZBC, Product Safety and more).
- 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
Underfloor Product Range
| UNDERFLOOR SECTION RANGE | PACK SIZES | |||||||
|---|---|---|---|---|---|---|---|---|
 |  | Density (kg/m3) | R-Value | Nominal thickness (mm) | Dimensions (mm) | Pieces per pack | Area per pack (m2) | |
| Underfloor Sections |  | | 16.67 | R 1.9 | 90 | 370 x 1140 | 16 | 6.75 |
| | 16.67 | R 1.9 | 90 | 425 x 1140 | 16 | 7.75 | |
| | 16.67 | R 1.9 | 90 | 475 x 1140 | 14 | 7.58 | |
| | 16.67 | R 1.9 | 90 | 580 x 1140 | 12 | 7.93 | |
| | 15 | R 2.8 | 140 | 370 x 1140 | 10 | 4.21 | |
| | 15 | R 2.8 | 140 | 425 x 1140 | 10 | 4.84 | |
| | 15 | R 2.8 | 140 | 475 x 1140 | 10 | 5.41 | |
| | 15 | R 2.8 | 140 | 580 x 1140 | 8 | 5.28 | |
| 20.70 | R 3.2 | 140 | 370 x 1140 | 10 | 4.21 | ||
| 20.70 | R 3.2 | 140 | 425 x 1140 | 10 | 4.84 | ||
| 35.7 | R 3.4 | 140 | 370 x 1140 | 10 | 4.21 | ||
| 35.7 | R 3.4 | 140 | 425 x 1140 | 10 | 4.84 | ||
| 35.7 | R 3.4 | 140 | 475 x 1140 | 10 | 5.41 | ||
| 35.7 | R 3.4 | 140 | 580 x 1140 | 8 | 5.28 | ||
| Double Layer - R1.9 x 2 | | 16.67 | R 3.8 | 180 | 370 x 1140 | 16 | 6.75* | |
| 16.67 | R 3.8 | 180 | 425 x 1140 | 16 | 7.75* | ||
| 16.67 | R 3.8 | 180 | 475 x 1140 | 14 | 7.58* | ||
| 16.67 | R 3.8 | 180 | 580 x 1140 | 12 | 7.93* |
- For any system - single or double layered - the joist depth must be greater than the insulation thickness.
- * For Double Layering - Double the quantity of product is required. For instance, a 100m2 area requires 200m2 of product to achieve a double layer.
| UNDERFLOOR BLANKET RANGE | PACK SIZES | |||||||
|---|---|---|---|---|---|---|---|---|
| | Density (kg/m3) | R-Value | Nominal thickness (mm) | Dimensions (mm) | Pieces per pack | Area per pack (m2) | |
| Underfloor Blanket | | | 7.5 | R 1.5 | 100 | 450 x 11110 | 4 | 20 |
| | 7.5 | R 1.5 | 100 | 510 x 9804 | 4 | 20 | |
| | 7.5 | R 1.5 | 100 | 600 x 11110 | 3 | 20 | |
| | 7.5 | R 1.5 | 100 | 650 x 10256 | 3 | 20 | |
| | 7.83 | R 1.8 | 115 | 450 x 11110 | 4 | 20 | |
| | 7.83 | R 1.8 | 115 | 510 x 9804 | 3 | 20 | |
| | 7.83 | R 1.8 | 115 | 600 x 11110 | 3 | 20 | |
| | 7.83 | R 1.8 | 115 | 650 x 10256 | 3 | 20 | |
| 10 | R 2.0 | 115 | 450 x 11110 | 4 | 20 | ||
| 10 | R 2.0 | 115 | 510 x 9804 | 4 | 20 | ||
| 10 | R 2.0 | 115 | 600 x 11110 | 3 | 20 | ||
| 10 | R 2.0 | 115 | 650 x 10255 | 3 | 20 | ||
10.7 | R 2.6 | 140 | 450 x 8333 | 4 | 15 | |||
10.7 | R 2.6 | 140 | 510 x 7352 | 4 | 15 | |||
10.7 | R 2.6 | 140 | 600 x 8333 | 3 | 15 | |||
10.7 | R 2.6 | 140 | 650 x 7692 | 3 | 15 |
| CARPARK PANEL RANGE | PACK SIZES | |||||||
|---|---|---|---|---|---|---|---|---|
| Colour | Density (kg/m3) | NRC | R-Value | Nominal Thickness (mm) | Dimensions (mm) | Pieces per pack | Area per pack (m2) | |
| Carpark Panel | Mottled Grey | 28.57 | 0.85 | R 1.7 | 70 | 1200 x 2400 | 4 | 11.52 |
| Mottled Grey | 32.00 | R 2.5 | 100 | 1200 x 2400 | 3 | 8.64 |
Underfloor Technical Details
Technical Attributes | Standard | Test Result |
|---|---|---|
Performance (Carpark Panel Only) | ||
| ASTM C518 | As shown on Product Range Table - Carpark Panel Only |
| ISO 354 | As shown on Product Range Table - Carpark Panel Only |
| New Zealand Building Code | ||
| Durability | Clause B2.3.1 (b) (c) Clause B2.3.2 | Ref: BRANZ Appraisal No 802(1) {excludes Carpark Panel} |
| Hazardous Building Materials | Clause F2.3.1 | Ref: BRANZ Appraisal No 802(1) {excludes Carpark Panel} |
| Energy Efficiency | Clause H1.3.1(a) Clause H1.3.2 E | Ref: BRANZ Appraisal No 802(1) {excludes Carpark Panel} |
| 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 R3.4} | |
| 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.