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InteriorInterior
Wool Exterior Wall Insulation
Description

Terra Lana's exterior wall insulation is dense, rigid and resilient to slumping. Supplied in standard widths designed to fit between studs spaced at 600mm or 400mm and lengths standard at 1.2m, but can be customised to suit the project. 

Terra Lana's Truss Roof Blanket insulation is manufactured from New Zealand wool along with thermal bonding technology using polyester to create a robust, structurally stable product that will never slump nor lose its loft over the lifetime of the building. It is BRANZ appraised, and comes with a 50 year warranty to meet the durability requirements of the New Zealand Building Code.

  R-value Thickness Centres
90mm Wall R2.4 90mm 400mm
90mm Wall R2.4 90mm 600mm
140mm Wall R3.2 140mm 400mm
140mm Wall R3.2 140mm 600mm
140mm Wall R3.6 140mm 400mm
140mm Wall R3.6 140mm 600mm
see Data Sheet for full information 
Key Features
  • Moisture control — Terra Lana insulation is hygroscopic (can absorb and release moisture vapour) so it can help to mitigate condensation risks and mould formation within buildings whilst still maintaining thermal performance.
  • Warmth — Wool has a complex natural cellular structure that provides superior warmth in all climates, as it buffers temperature changes. Like wearing wool clothing, it improves the comfort of homes and buildings, requiring less energy to heat or cool them than synthetic insulations
  • Acoustic — Wool has a natural crimp to its structure, which provides excellent acoustic properties. Testing provided by Marshall Day Labs has proven Terra Lana insulation reduces noise transfer through walls, floors, and ceilings of residential and commercial buildings.
  • Customisation — All widths and lengths can be customised to suit the specific framing requirements of each project.
  • 50 year warranty — 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. Meets the durability requirements of the NZBC.
  • Local and recyclable — new wool is sourced from local Canterbury farms, and recycled wool from carpet manufacturers' pre-consumer waste. All Terra Lana offcuts can be returned and recycled in their low-carbon manufacturing plant.
  • Safe — Terra Lana is safe to touch and can be handled without protective clothing, and has negligible VOC emissions
  • Declare Red List Free — certified toxin free
Scope of Use

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:

  • For external stud walls
  • Installed from inside, after exterior wall lining, after electrical, plumbing and ducting has been installed
  • New and retrofit applications
  • Fits 400 or 600mm stud spacings
  • Lengths to fit 2.4 to 2.7m stud height
  • For variable stud spacings Terra Lana can manufacture specific widths
Limitations on Use
  • For service cavity walls and ceilings see separate product listing
  • Must be installed in accordance with the Installation Guide and Terra Lana technical literature
  • Must be stored under cover and in dry conditions, and in a way that avoids excessive compression
Statement of Building Code Compliance

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.
Other Performance Attributes
  • 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
Documents
Wool Insulation Product Data
Data Sheet: Exterior Wall
Wool Insulation Specification Table
BRANZ Appraisal 682: Terra Lana Wool Insulation

682 [2022]

Wool Insulation Installation Guides
CAD/PDF Details
Terra Lana Insulation: Typical Details (Full Set)

TL

Terra Lana Products is located in Christchurch and manufactures an extensive range of innovative wool insulation, acoustic control and landscaping products.

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