Loft Insulation Technical Specifications
The following table shows R-Values when Loft Insulation is blown into a cavity at various densities. These values are indicative and are based on standard timber frame construction.
| R-Value (m2 K/W) | Product Thickness (mm) | Thermal Density (kg/m3) | Conductivity (W/mK) |
|---|---|---|---|
| 1.0 | 49 mm | 10 kg/m3 | 0.049 W/mK |
| 1.5 | 74 mm | 10 kg/m3 | 0.049 W/mK |
| 2.0 | 98 mm | 10 kg/m3 | 0.049 W/mK |
| 2.5 | 123 mm | 10 kg/m3 | 0.049 W/mK |
| 3.0 | 147 mm | 10 kg/m3 | 0.049 W/mK |
| 3.5 | 172 mm | 10 kg/m3 | 0.049 W/mK |
| 4.0 | 196 mm | 10 kg/m3 | 0.049 W/mK |
| 4.5 | 221 mm | 10 kg/m3 | 0.049 W/mK |
| 5.0 | 245 mm | 10 kg/m3 | 0.049 W/mK |
| 6.0 | 294 mm | 10 kg/m3 | 0.049 W/mK |
| 7.0 | 343 mm | 10 kg/m3 | 0.049 W/mK |
| 8.0 | 392 mm | 10 kg/m3 | 0.049 W/mK |
| 9.0 | 441 mm | 10 kg/m3 | 0.049 W/mK |
| 10.0 | 490 mm | 10 kg/m3 | 0.049 W/mK |
| 15.0 | 735 mm | 10 kg/m3 | 0.049 W/mK |
Additional Technical Information
Loft provides excellent thermal performance due to a low thermal conductivity and a complete and consistent installation. Loft provides a choice of R-Values based on the installed thickness and installed weight per square metre. The stated thermal resistance (R-Value) is provided by installing the required density at the thickness (per the manufacturer’s instructions). Failure to install less than the required density and thickness will result in lower insulation R-Values.
Loft is designed to be installed at a target density of 12kg/m3. Refer to the thermal performance table for more details. Loft will achieve R-Values that with the use of NZS 4214 are able to meet the minimum requirements of NZS 4218 and the Energy Efficiency requirements for ceilings.
Improves sound transmission class (STC) by between 4 and 10 points.
Reduces energy usage and utility bills for heating and air conditioning.
Loft is an engineered solution which incorporates a system approach to the insulation of your ceiling space. A range of accessories are supplied with the System to provide a range of solutions and performance checks. Backed by the Approved Installer network, to provide confidence in the performance of the product.
– Fast and easy to install with the added confidence of an Approved Installer.
– Easily fills hard to reach and low pitch roofs.
– 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.
To achieve the required R-Value, this product must be installed using an approved blowing machine and equipment. Installation must be complete inline with the system guidelines and by an Approved Installer.
Specification Guide
The insulation shall be Loft insulation 0.043 W/mK (NZ), at a density of 12kg/m3 , to meet the provisions of the BCA. The product will be non-combustible, CFC/HCFC free, zero ODP and GWP, Glasswool insulation with high post-consumer recycled glass content. It will be manufactured under Quality Assurance Standards ISO 9001:2008 and ISO 14001:2004 and shall be installed in accordance with the instructions issued by them.
Specification Compliance
– ASTM and AS/NZS 4859.1 compliance.
– Fire Resistance (AS1530.1:1994 – non-combustible).
– US GREENGUARD Gold Certified and verified to be formaldehyde free.
– Loft is manufactured with up to 80% post-consumer glass content
New Zealand Building Code Compliance
Clause B2 DURABILITY: Performance B2,3,1(b) 15 years. Loft will meet this requirement.
Clause E3 INTERNAL MOISTURE: Performance E3.3.1. Loft will contribute to meeting this requirement.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. Loft 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. Loft will contribute to meeting these requirements. Loft thermal resistance has been determined by AS/NZS 4859.1. Loft is an acceptable solution in terms of the New Zealand Building Code.