







GreenStuf® Building Insulation Blanket (BIB)
Thermal insulation blanket that reduces heat loss through floors.
GreenStuf® Thermal Underfloor Insulation Blanket is designed to insulate residential and commercial spaces with exposed joist floors in new and existing homes.
GreenStuf® Building Insulation Blanket (BIB)
Product Name | R-Value | Thickness | Standard Width | Type | Nominal grams per m2 (GSM) | Nominal Density (kg/m3) | |
---|---|---|---|---|---|---|---|
Building Insulation Blanket (BIB) | R1.0 | 45mm | 1200mm | Roll | 700 | 15.6 | |
Building Insulation Blanket (BIB) | R1.5 | 100mm | 1200mm | Roll | 750 | 7.5 | |
Building Insulation Blanket (BIB) | R1.8 | 100mm | 1200mm | Roll | 1025 | 10.3 | |
Building Insulation Blanket (BIB) | R2.2 | 150mm | 1200mm | Roll | 1100 | 7.3 | |
Building Insulation Blanket (BIB) | R2.6 | 140mm | 1200mm | Roll | 1650 | 11.8 | |
Building Insulation Blanket (BIB) | R3.2 | 190mm | 1200mm | Roll | 1700 | 8.9 | |
Building Insulation Blanket (BIB) | R3.4 | 200mm | 1200mm | Roll | 1850 | 9.3 | |
Building Insulation Blanket (BIB) | R4.1 | 210mm | 1200mm | Roll | 2750 | 13.1 | |
Other Ceiling Insulation products | |||||||
Thermal Ceiling Insulation | R1.0 | 45mm | 870mm | Roll | 700 | 15.6 | |
Thermal Ceiling Insulation | R1.5 | 100mm | 580 / 870mm | Roll | 750 | 7.5 | |
Thermal Ceiling Insulation | ✔ | R1.8 | 100mm | 580 / 870mm | Roll | 1025 | 10.3 |
Thermal Ceiling Insulation | R2.2 | 150mm | 870mm | Roll | 1100 | 7.3 | |
Thermal Ceiling Insulation | R2.4 | 140mm | 580 / 870mm | Roll | 1400 | 10 | |
Thermal Ceiling Insulation | ✔ | R2.6 | 140mm | 580 / 870mm | Roll | 1650 | 11.8 |
Thermal Ceiling Insulation (Skillion Roof Blanket) | R2.9 | 115mm | 870mm | Pads | 2800 | 24.3 | |
Thermal Ceiling Insulation | R2.9 | 140mm | 580mm | Roll | 1850 | 13.2 | |
Thermal Ceiling Insulation | ✔ | R2.9 | 185mm | 580 / 870mm | Roll | 1500 | 8.1 |
Thermal Ceiling Insulation (Skillion Roof Blanket) | R3.2 | 165mm | 870mm | Pads | 2050 | 12.4 | |
Thermal Ceiling Insulation | ✔ | R3.2 | 190mm | 580 / 870mm | Roll | 1800 | 9.5 |
Thermal Ceiling Insulation* | ✔ | R3.4 | 140mm | 870mm | Roll | 2850 | 20.4 |
Thermal Ceiling Insulation (Skillion Roof Blanket) | R3.4 | 165mm | 870mm | Roll | 2300 | 13.9 | |
Thermal Ceiling Insulation | ✔ | R3.4 | 200mm | 580 / 870mm | Roll | 1850 | 9.3 |
Thermal Ceiling Insulation (Skillion Roof Blanket) | R3.6 | 140mm | 870mm | Pads | 3900 | 27.9 | |
Thermal Ceiling Insulation (Skillion Roof Blanket) | R3.6 | 165mm | 870mm | Pads | 2800 | 17 | |
Thermal Ceiling Insulation | ✔ | R3.6 | 210mm | 580 / 870mm | Roll | 2050 | 9.8 |
Thermal Ceiling Insulation | ✔ | R4.1 | 210mm | 870mm | Roll | 2750 | 13.1 |
Thermal Ceiling Insulation (Double Layer)* | ✔ | R6.8 (2 x R3.4) | 280mm (2 x 140mm) | 870mm | Roll | 2850 per layer | 20.4 per layer |
- Independently tested & assessed achieving NZBC Fire Standards
- Naturally resistant to insects and vermin
- Safe to touch 100% polyester
- Made in New Zealand
Data Sheets
Install Instructions
Warranties & Manufacturers Guarantee
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Everything you need
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Not only is GreenStuf® insulation the non-toxic and environmentally-smarter solution, but our team of experts is also here to help with all your energy efficiency needs.

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Kiwi families love GreenStuf® because they know it will keep their homes warmer, healthier, and drier all year-round.

Insulation that's safe for you and your projects
GreenStuf® 100% polyester insulation doesn’t just comply with strict building standards, it’s also non-toxic and safe to touch without PPE—ensuring a hazard and itch-free installation.
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