Technical Statement

Terra Lana Product Technical Statement


Terra Lana Wool Insulation is a wool and polyester fibre blend thermal insulation for use in ceilings, walls and under floors of buildings.

Terra Lana Wool Insulation has been appraised as a thermal insulation material for ceilings, walls and under floors of buildings within the following scope:

  • Framed or part framed domestic and commercial buildings where the insulation remains dry and serviceable.

In the opinion of BRANZ, Terra Lana Wool Insulation if designed, used, installed and maintained in accordance with the statements and conditions of our BRANZ Appraisal No. 682 (2010), will meet or contribute to meeting the following provisions of the NZBC:

  • Clause B2 Durability: Performance B2.3.1(a) not less than 50 years and B2.3.1(b) 15 years and B2.3.2.  Terra Lana Wool Insulation will meet these requirements.
  • Clause E3 Internal Moisture: Performance E3.3.1.  Terra Lana Wool Insulation will contribute to meeting this requirement.
  • Clause F2 Hazardous Building Materials: Performance F2.3.1 Terra Lana Wool Insulation meets this requirement and will not present a health hazard to people.
  • Clause H1 Energy Efficiency: Performance H1.3.2.(e) Terra Lana Wool Insulation will contribute to meeting these requirements.  Terra Lana Wool Insulation has been appraised as an ACCEPTABLE SOLUTION in terms of New Zealand Building Code compliance.  Terra Lana Wool Insulation thermal resistance (R-value) has been determined by testing to AS/NZS 4859.1 which is an acceptable method.

Terra Lana Wool Insulation must be installed in accordance with the manufacturers Technical Literature and NZS 4246:2006: Energy Efficiency – Installing Insulation in Residential Buildings, to meet the stated thermal performance rating of the insulation.

For a copy of the Technical Literature please contact us.

Do not base consent applications on a Product Technical Statement (PTS).  Always refer to the supporting verification documentation BRANZ Appraisal No 682 (2010) Terra Lana Wool Insulation.  Click here to view the Appraisal.

Download our Warranty & Technical Statement as a PDF