The Earthwool glasswool insulation range for New Zealand

The Earthwool® glasswool insulation range for New Zealand homes and buildings has been designed to meet or exceed the New Zealand Building Code at incredibly costs effective prices.

Great Product Range - to meet and exceed the New Zealand Building Code

Better range of Wall, Ceiling, Underfloor thermal and sound absorbing insulation so you can improve the energy efficiency and sound performance of your building.

BEST! Some of the highest R Ratings for use in New Zealand - at incredibly cost effective pricing. See the range below;

Earthwool® glasswool insulation segments and rolls are designed to be flexible can be used in wall, ceiling, underfloor and sound absorbing applications.

Earthwool glasswool insulation is rot-proof, non-hygroscopic, odourless, does not sustain vermin and does not encourage the growth of mould, fungi or bacterias. It does not contain added phenol, formaldehyde or artificial colours/ (dyes) and is provided with a 50 year warranty from Knauf Insulation.

Ceiling Segment Insulation

Earthwool glasswool insulation ceiling segments:  this range is a new generation of softer, safer and more environmentally friendly glasswool insulation.  Knauf Insulation's advanced compression packaging reduces handling time and also the risk of damage in transit, storage and on-site.  

Segments are the traditional insulation product for ceilings.  Earthwool glasswool insulation is supplied in pre-cut rectangular sizes at 430mm width to suit the most common ceiling joist centres.  
The ceiling segments are recommended for installation from either below ceiling joists (i.e. within the room) or from above ceiling joists (i.e. within the ceiling space).
Earthwool glasswool insulation segments can also be used in cathedral style roofs and raked ceilings. These are generally 'skillion' style roof construction where the ceiling line and roof line are parallel.  The R3.2 105mm skillion segment is designed specifically for these applications. 

Ceiling Blanket Insulation

Knauf Insulation Earthwool glasswool insulation ceiling blankets are an ideal solution for thermal and acoustic insulation of both residential and commercial roofs.  Supplied in rolls at 1200mm wide, these are idea to install from above perpendicular to the joists (in blanket form) or between the joists in long runs. 

For an optimum ceiling insulation, use in a double layer system: 
  1. First layer segments between the joists or bottom chords of the trusses 
  2. Second layer perpendicular to the segments completely coving the timbers in blanket form, reducing thermal losses through the timbers. 

Using Earthwool Glasswool for SKILLION ceilings

Knauf Insulation Earthwool glasswool insulation skillion segment and ceiling blankets are an ideal solution for skillion ceilings.  When constrained for joist height use the R3.2 105mm skillion segment.  For deeper joist depths consider using blanket - the rolls can be installed between the joist in long runs, or alternatively you can cut the rolls into segments to fit snugly between the joists.  Ensure that you maintain the 25mm or more air gap between the top of the insulation and the building underlay to provide the minimum amount of ventilation to reduce moisture build up in the roof cavity. 

Recommended Products for use in Skillion/Cathedral ceiling applications;

  1. 105mm loft R3.2 segment for 140+mm joists
  2. 135mm loft R3.2 blanket for 160+mm joists
  3. 145mm loft R3.6 blanket for 170+mm joists 

External Wall Insulation

Earthwool glasswool insulation not only provides a cost-effective thermal solution but also acoustical barrier for cost efficient construction. The consistent quality, low dust and clean-cutting resilient fibres make fabrication easy and installation fast.  For use in both external and internal walls.  It can also be used for internal walls to reduce sound transmission from room to room.  This thermally efficient and cost effective insulation provides energy saving and increased comfort in buildings. 
Segments are available in thicknesses to suit 50mm, 75mm, 90mm and 140mm timber and metal frames.
NEW:  R3.6 and R4.1 for 140mm frame walls

Underfloor Insulation

Earthwool glasswool insulation underfloor insulation, as well as reducing heat loss through floors, also reduces unwanted noise from outside and between rooms in the home.  

NEW:  R1.5 Quilted Underfloor - Completely Encapsulated with a "Wind Wash Barrier"

 R1.8 Underfloor with "Wind Wash Barrier"


Internal Wall Insulation (Acoustic) 

This specialist Sound absorbing range of products is available in 50mm and 75mm widths (at 14kg/m³), plus the R2.6 90mm wall product (at 20kg/m3).
Earthwool glasswool insulation internal wall products reduce unwanted noise from outside and also limit sound transmission from room to room or office.