The Earthwool® glasswool insulation: External wall batt range is a new generation of softer, safer and more
environmentally friendly glasswool insulation.
Advanced compression packaging reduces handling time and the risk of damage in transit and on-site.
Although the product is primarily designed for use in external walls
it can also be used for internal walls to reduce sound transmission from
room to room.
It is thermally efficient and cost effective in saving
energy and providing increased comfort in buildings.
are the traditional insulation product for insulating external walls
and are available in thicknesses to suit 90mm and 140mm timber and metal
Unlike reflective foil, Earthwoo® glasswool
insulation: External wall segments prevent heat gain in summer and heat
loss in winter by countering convection, conduction and radiation.
Scope of use
Supply and install the selected Earthwool® glasswool insulation to walls,
floors, ceilings, roofs and other areas as identified on the drawings,
complete with accessories.
All aspects of this work shall be in
accordance with Knauf Insulation product manuals and installation
guides, (check www.knaufinsulation.co.nz,
or call 0800 562 834 for the latest editions), Earthwool® glasswool
insulation BRANZ Appraisal, other relevant product manufacturers'
recommendations, and as shown on the drawings.
No substitutions are permitted for Earthwool® glasswool insulation.
New Zealand Building Code (NZBC)
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
- Clause B2 Durability: Performance B2.3.1(a)
- Clause E3 Internal moisture: Performance E3.3.1
- Clause F2 Hazardous building materials: Performance F2.3.1
- Clause H1 Energy efficiency : Performance H1.3.1
The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:
Earthwool glasswool insulation is an Acceptable Solution in terms of New Zealand Building Code Compliance.
Earthwool glasswool insulation thermal resistance (R-value) has been determined by testing to AS/NZS 4859.1 which is an acceptable method.
The product has and can make available the following additional evidence to support the above statements:
Earthwool glasswool insulation: External wall segments provide a
cost-effective thermal and acoustic barrier for energy-efficient
The consistent quality, low dust, and clean-cutting
resilient fibres make fabrication easy and installation fast.
glasswool insulation: External wall segments can be used in timber and
metal frame applications in residential structures. These applications
include thermal and acoustic treatments to walls, ceilings and floors.
Insulation offers Earthwool glasswool insulation: External wall
segments in a wide range of sizes and R-values.
insulation can be used for cavity walls, floors, ceilings, attics,
basements and crawlspaces. It is highly resilient, recovering quickly to
full thickness. It also greatly reduces the transmission of noise in
Installation of Earthwool glasswool insulation must be completed by an installer with an understanding of insulation installation, in accordance with the instructions given within the Technical Literature, Installation Instructions and BRANZ Appraisal.
Installation of Earthwool glasswool insulation must be in accordance with the Knauf Insulation’s Technical Literature, Installation Instructions and BRANZ Appraisal.
NZS 4246 should be used as a guide for installing insulation in residential buildings in New Zealand
The product must be installed only when the building is enclosed and when the construction materials have achieved the required maximum moisture content or less, to ensure the insulation does not become wet
The building must be maintained weatherproof at all times.
If, during normal routine maintenance it is discovered that moisture has entered the building envelope, or that dampness has occurred because of leaking plumbing or some other source, then that source must be repaired immediately.
Wet or damp insulation must be removed and then replaced with new insulation of an equivalent thermal rating.
Cavities must be clean, dry and free of all contaminants and mould before fitting new insulation.
NZS 4246 Paragraph 3.3 gives guidance on thermal insulation maintenance due to water damage.
Earthwool glasswool insulation: External wall segments are free from
CFCs, HCFCs and any other material with ozone depletion potential in its
manufacture and content and represents no known threat to the
Earthwool glasswool insulation: External wall
segments’ manufacture has a low impact on the environment and is
classified as Zero ODP and Zero GWP.
Knauf Insulation mineral wool products with ECOSE Technology benefit
from a revolutionary, bio-based, formaldehyde-free binder technology,
based on rapidly renewable materials, instead of petro-based chemicals.
It reduces embodied energy and delivers superior environmental
The technology has been developed for Knauf Insulation's glass and rock
mineral wool products, enhancing their environmental credentials without
affecting the thermal, acoustic or fire performance. Insulation
products made with ECOSE Technology contain no dye or artificial colours
- the colour is completely natural
||ISO 9001 (Quality Management)
||Member of New Zealand Green Building Council
||EcoSpecifier Global GreenTag Level A