Technical Data
Wool Structure
To understand our technical data, it is important to understand the complexities of the wool fibre
Our Wool has been Tested to NZ Standard 4222
for Loose Fill Insulation Materials
THERMAL RESISTANCE
CORROSIVENESS
MOISTURE ABSORBANCE
FIRE RESISTANCE
SOUND ABSORPTION
Thermal Resistance
Tested by BRANZ Test Report 325 for 'knopped' loose wool sheep fibre
A Thermal rating of R2.2 is achieved at a depth of 120mm
A Thermal rating of R2.7 is achieved at a depth of 150mm
A Thermal rating of R3.2 is achieved at a depth of 180mm
A Thermal rating of R3.6 is achieved at a depth of 200mm
A Thermal rating of R4.0 is achieved at a depth of 220mm
R-Value is the measurement of thermal resistance (R) between two surfaces
Fire Resistance
Tested by BRANZ Test Report FE 1649 Early Fire Hazard of Knopped Sheep Wool, Loose Fill Insulation
Ignitability Index (0-20) = 0
Spread of Flame Index (0-10) = 0
Heat Involved Index (0-10) = 0
Smoke Developed Index (0-10) = 5
Moisture Absorbance
Tested by BRANZ Test Report 342 for 'knopped' loose wool sheep fibre
Moisture absorption of 8.4% by weight complied with maximum of 15% called for in NZS 4222
Corrosiveness
Tested by BRANZ Test Report 340 of Knopped Sheep Wool, Loose Fill Insulation
It was determined that the wool was 'noncorrosive' when tested in accordance with NZS 4222
Sound Absorbance
Tested by the Acoustics Testing Service, Department Architecture, THE UNIVERSITY OF AUCKLAND
Test Report T433/ATS
Standards Followed:
ISO 345 (1985)-for method
ASTM C423-84a - for NRC determination A Noise Reduction Coefficient ( NRC) of 0.85 was achieved
