Under Floor Insulation Rolls

Underfloor RollThe Earthwool® glasswool: Under floor insulation roll range is a new generation of softer, safer and more environmentally friendly glasswool insulation.

Advanced compression packaging reduces handling time and the storage space required on-site.

The product is specifically designed for overhead installation in tight crawl spaces and has a black glass wind wash barrier to make it even more thermally efficient.

If you're installing Earthwool glasswool yourself then don't forget to check out our DIY Safety Instructions and Precautions before you start.

Application

Earthwool glasswool: Under floor insulation rolls provide a cost-effective thermal and acoustic barrier for energy-efficient construction. The consistent quality, low dust, and clean-cutting resilient glasswool make fabrication easy and installation fast. Earthwool glasswool: Underfloor rolls can be used in timber and metal frame applications in residential structures. These applications include thermal and acoustic treatments to floors.

Knauf Insulation offers Earthwool glasswool in a wide range of sizes and R-values. Earthwool glasswool 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 the home.

Proven Performance

  • Preferred by professional installers concerned with quality, appearance and productivity.
  • Excellent thermal performance - the wind wash barrier ensures the thermal performance is not affected by air movement under the floor.

Wind Wash diagram

Durability

  • Earthwool glasswool is odourless, rot proof, non-hygroscopic, do not sustain vermin and will not encourage the growth of fungi, mould or bacteria.

Superior Handling

  • Highly resilient recovers quickly to full thickness for a snug fit and superior finished aesthetics.
  • Consistent quality materials feel good, cut easily and install fast. 
  • Low dust for easier handling and increased productivity.

Convenient Packaging, Easier Handling

  • Earthwool glasswool is packaged in a strong, white poly bag that offers excellent protection from abuse, dust and moisture.
  • Earthwool glasswool packages feature easy to follow installation instructions.
  • Master bag units (containing multiple packs) ensure reduced handling costs with improved compression – more square metres per bag, more square metres per truck load, fewer trips to the job site and less warehouse space for storage.

Superior Service and Support

  • Knauf Insulation is totally focused on providing first class customer service, producing high quality product and ‘on time in full’ deliveries. 
  • Knauf Insulation recognises the need to establish, develop and support a professional network of distributors and re-sellers in order to service a growing insulation market. 
  • Knauf Insulation is committed to providing a comprehensive range of relevant literature and web-based technical information to support specifiers and consumers.

Underfloor Rolls

Material Code R-Value (m²K/W) Thickness (mm) Width (mm) Length (mm) Area per pack (m²)
492704 1.8 75 2x 600 10,000 12.0
546232 1.8 75 2x 500 10,000 10

Calculate how many packs of insulation you will need here.

Avail-at-Bunnings-Logo 

Specification Compliance

• AS/NZS 4859.1: 2002 Materials used in the Thermal Insulation of Buildings and comply with the New Zealand Building Code requirements: B2 – Durability, E3 – External Moisture, F2 – Hazardous Building Materials,and H1 – Energy Efficiency, as appraised by BRANZ.

The Earthwool® glasswool: Underfloor range is an acceptable solution in terms of the New Zealand Building Code. This product is designed for use in timber and metal frame applications in new and existing domestic and commercial buildings. 

Thermal Conductivity
• ASTM C 518

Thermal Resistance
• ASTM C 653

Specification Guide

The underfloor insulation shall be Earthwool glasswool: Underfloor roll with a wind wash barrier R*, *mm thick, faced with a black glass wind wash barrier. The product will be non-combustible, CFC/HCHC free, zero ODP & GWP, glasswool insulation with high post-consumer recycled glass content and with ECOSE® Technology. It will be manufactured under Quality Assurance Standards ISO 9001:2008 and ISO 14001:2004 by Knauf Insulation and shall be installed in accrodance with the instructions issued by them. 

*architect to insert details of product used. 

Bio-solubility

The formulation used for Earthwool glasswool has been independently assessed to meet the requirements of the stringent Note Q standard (and is therefore consistent with the highest New Zealand industry standards), and also assessed by Knauf Insulation against the criteria of the Australian Safety and Compensation Council ASCC Approved Criteria for Classifying Hazardous Substances [NOHSC: 1008 3rd Edition]. As a result of this assessment, Earthwool glasswool is not classified as hazardous according to the NOHSC criteria.

Technical Data

Water Vapour Absorption (ASTM C 1104)
• Less than 5% by weight.

Corrosion Resistance (ASTM C 665)
• No greater than sterile cotton.

Microbial Growth (ASTM C 1338)
• Does not support microbial growth.

Fire Resistance (ASTM E 136)

• Non-combustible.

GreenTag Level A Certification

GreenTag Certification

Earthwool glasswool MSDS