Terra Lana Wool Insulation has been appraised as a thermal insulation material for framed or part-framed walls, ceilings and roofs of domestic and commercial buildings. 

Installation:

• Installed after ceiling construction in new or retrofitted truss roof spaces
• Single layer options:
  • Roll blanket installed as a single layer bridged over the top of rafters to reduce heat loss through rafters, or
  • Segment slabs are installed pre-cut to width between rafters to achieve R-value
• Double layer system:
  • A second layer can be installed perpendicularly over the first layer and rafters to increase R-value and reduce heat loss through the rafters
  • This further enables full ceiling coverage out to the roof space edges

• Must be installed in accordance with the Installation Guide and Terra Lana technical literature
• When the product is required to be installed in two layers, ensure all end-joins are overlapped
• Allow a 25mm gap between Terra Lana and the roof underlay
• Must be stored under cover and in dry conditions, and in a way that avoids excessive compression

In the opinion of BRANZ, Terra Lana Wool Insulation, if designed, used, installed and maintained in accordance with the statements and conditions of Appraisal 682, 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. Terra Lana Wool Insulation meets these requirements
• Clause E3 INTERNAL MOISTURE: Performance E3.3.1. Terra Lana Wool Insulation contributes to meeting this requirement.
• Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. Terra Lana Wool Insulation meets this requirement.
• Clause H1 ENERGY EFFICIENCY: Performance H1.3.1 (a) and H1.3.2 E. Terra Lana Wool Insulation contributes to meeting these requirements.

• 50 year warranty — Terra Lana wool insulation comes with a 50 year warranty to meet the durability requirements of the New Zealand Building Code. The combination of New Zealand wool and thermal bonding technology using polyester creates a robust, structurally stable product that will never slump nor lose its loft over the lifetime of the building. 
• Recyclable — As part of Terra Lana's commitment to zero waste, Terra Lana insulation offcuts can be returned to the factory in Christchurch, and are recycled into more insulation.
• Declare Red List Free — certified toxin free