GreenStuf Polyester Insulation
Greenstuf® Insulation is a high-performance, environmentally friendly insulation made from 100% polyester. Safe, non-toxic, and easy to install, it delivers year-round thermal and acoustic comfort. Designed for residential and commercial buildings, Greenstuf helps reduce energy use while supporting healthier indoor environments and a more sustainable future.
Key Features and Benefits
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Safe, Non-Toxic and Easy to Handle
Greenstuf® insulation is made from 100% polyester fibre, making it safe to touch and handle without gloves or protective clothing. It is completely non-toxic, non-irritant, and non-allergenic. Free from added chemicals, binders, and formaldehyde, it supports healthier indoor environments and safe installation in all building types.
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High Thermal and Acoustic Performance
GreenStuf® offers a range of thermal insulation products with R-values from R1.0 to R6.8, helping buildings retain warmth in winter and stay cool in summer. Its density and structure also provide effective sound absorption and noise control, contributing to a quieter indoor environment.
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Environmentally Sustainable
Manufactured in New Zealand, GreenStuf® contains a minimum of 50% recycled polyester fibre sourced from PET plastic bottles. It's fully recyclable at the end of its life and is produced on a zero-waste production line. GreenStuf® holds Global GreenTag GreenRate Level A certification and is Declare Red List Free, indicating it contains no harmful chemicals.
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Moisture and Fire Resistant
GreenStuf® is hydrophobic, meaning it won't absorb moisture, helping prevent mould and mildew. It meets the New Zealand Building Code (NZBC) fire safety requirements, achieving a Group 1S classification under ISO 9705:1993, indicating low smoke production and high fire resistance.
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Durable with Long-Term Performance
Designed to last the lifetime of the building, GreenStuf® won't settle or degrade over time.It comes with a 50-year product durability warranty, aligning with the NZBC Clause B2 for long-term material performance.
Greenstuf Product Range
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Floor Insulation
Installing underfloor insulation helps prevent heat loss through the floor, keeping your home warmer and more energy-efficient year-round. Greenstuf® floor insulation is designed to fit securely between floor joists, providing long-lasting thermal performance without sagging or degrading. It’s moisture-resistant, safe to handle, and meets all relevant New Zealand Building Code requirements.
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Wall Insulation
Properly insulated walls are essential for maintaining consistent indoor temperatures and reducing energy costs. Greenstuf® wall insulation is friction-fitted between timber framing, delivering reliable thermal resistance and helping reduce sound transfer between rooms. It’s non-toxic, non-irritant, and manufactured to perform for the life of the building.
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Ceiling Insulation
Ceilings are one of the primary points of heat loss in most homes. Greenstuf® ceiling insulation offers high thermal performance and is available in a range of R-values to suit different climate zones. Easy to install and safe to handle, it helps maintain year-round comfort while supporting healthy indoor air quality.
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Acoustic Insulation
Greenstuf® acoustic insulation is specifically engineered to reduce airborne sound transmission between rooms, floors, and intertenancy walls. It improves privacy, reduces noise pollution, and enhances comfort in both residential and commercial settings. Its durable, non-toxic polyester composition ensures long-term acoustic performance without health or handling concerns.