Trufill Insulation System R-Value in Relation to Thickness
The following table shows R-Values when Trufill is blown into a cavity at various densities. These values are indicitave and are based on standard timber frame construction.
| Nominal Thickness (mm) | Open – 12 kg/m3 (0.043 W/mK at 15°C) | Medium – 19 kg/m3 (0.039 W/mK at 15°C) | Ultra – 32 kg/m3 (0.0327 W/mK at 15°C) |
|---|---|---|---|
| 45mm | 1.00 | 1.15 | 1.35 |
| 90mm | 2.05 | 2.30 | 2.75 |
| 140mm | 3.25 | 3.55 | 4.25 |
| 175mm | 4.05 | 4.45 | 5.35 |
| 190mm | 4.40 | 4.85 | 5.80 |
| 225mm | 5.20 | 5.75 | 6.85 |
| 240mm | 5.55 | 6.15 | 7.30 |
| 275mm | 6.35 | 7.05 | 8.40 |
| 290mm | 6.70 | 7.40 | 8.85 |
| 325mm | 7.55 | 8.30 | 9.90 |
| 360mm | 8.35 | 9.20 | 11.00 |
| 395mm | 9.15 | 10.10 | 12.05 |
Technical Resources
Strong thermal performance is achieved through low thermal conductivity and consistent installation, which are key features of Trufill®. In addition, installers can achieve different R-Values by selecting the appropriate thickness and installed weight per square metre.
To ensure the stated R-Value is achieved, the required density and thickness must be installed according to manufacturer guidelines. If these levels are not met, thermal performance will decrease. Therefore, correct installation plays an important role in delivering reliable results.
System Specifications & Data
For further information on how to install Trufill Insulation download our Datasheet or request our Installation Manual.

Download the CodeMark Certificate below.

Additional Information
Trufill® offers excellent thermal performance due to its low thermal conductivity and complete, consistent installation. Furthermore, it provides flexibility in R-Value selection through variations in installed thickness and weight per square metre.
The stated R-Value depends on installing the required density at the specified thickness, in line with manufacturer guidelines. If installation falls below these levels, performance will reduce. As a result, correct installation is essential for reliable and compliant outcomes.
– Non-combustible, non-corrosive.
– Will not rot, mildew or deteriorate.
– Will not sustain vermin.
– Will not settle.
– Consistent, reliable performance.
– Performs for the lifetime of the building.
Through an engineered system approach, Trufill® provides a smarter solution for ceiling space insulation. At the same time, integrated accessories support adaptable installation and built-in performance checks. Because of this, homeowners can feel confident in both compliance and long-term thermal performance when the system is installed by the Approved Installer network.
New Zealand Building Code Compliance
Clause B2 DURABILITY: Performance B2,3,1(b) 15 years. Trufill® will meet this requirement. Clause E3
INTERNAL MOISTURE: Performance E3.3.1. Trufill® will contribute to meeting this requirement. Clause F2
HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. Trufill® 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. Trufill® will contribute to meeting these requirements. Trufill® thermal resistance has been determined by AS/NZS 4859.1. Trufill® is an acceptable solution in terms of the New Zealand Building Code.
Benefits of Trufill Insulation
High Thermal Performance
Reduces Noise Transfer
Fast Installation
Fast and easy to install by accreditated installers and available nationwide.
Good for the Environment
It is manufactured from up to to 80 percent recycled glass content.