Underfloor Insulation Sydney

Underfloor insulation is a key part of a complete insulation solution. Cold air comes up through your floor and has a direct impact on the warmth of your living areas. Most homes will benefit significantly by insulating both ceilings and under floors by enabling you:

  • To retain heat in your home
  • Reduce the heating energy costs
  • Manage moisture, mildew and mould
    The result will be a more comfortable home in summer and winter, savings from increasing electricity charges and a healthy home environment with a reduction in damp areas
  • High performing underfloor insulation
  • Odourless, rot proof, non-hygroscopic (does not attract moisture)
  • Does not sustain vermin
  • Will not encourage the growth of fungi, mould or bacteria.


Pink® Floor Batts, made from lightweight, flexible and resilient glasswool and are specially designed for the thermal insulation of underfloor applications in domestic buildings. Manufactured in Australia for over 55 years, Pink Batts® is the trusted choice when it comes to building new homes or retrofitting existing buildings for increased thermal efficiency or acoustic control.

Pink® Floor Batts are a sound investment for homeowners, keeping occupants cooler in summer, warmer in winter and providing energy cost savings all year round.

Pink® Floor Batts are suitable for both new home and retrofit applications.

The high density nature of Pink® Floor Batts ensures the product will friction fit and will not sag during installation. A retention strapping system, supplied with the product, is recommended for use during installation. Pink® Floor Batts are renowned for their firmness, making them easy to install between standard stud spacing’s -ensuring they remain in place for ongoing thermal performance. Moreover, thanks to advances in formulation, Pink® Floor Batts are low itch - making them comfortable to handle during installation.

Material R-value m²K/W Nominal thickness mm Width mm Length mm No. of batts per pack m² per pack Coverage per pack m² No. of packs per bale
R2.5 90 430 1160 12 5.99 6.64 5

Pink® Floor Batts Datasheet


AIR-CELL Permifloor® is an underfloor insulation innovation designed specifically for suspended framed floor applications delivering a 2-in-1 insulation and moisture management solution.

AIR-CELL Permifloor® is manufactured with a patented closed-cell, cross-linked foam structure sandwiched by highly reflective foil surfaces and perforated with tiny, evenly-spaced holes. These perforations allow water and vapour to permeate through preventing moisture that can often collect under flooring when using conventional underfloor insulation systems.


Product Data AIR-CELL Permifloor® AIR-CELL Permifloor® 500
Product Code PSW040 PSW040500
Product Thickness 4 mm
Product R-value R0.12
Roll Diameter 420 mm
Roll Weight 9.5 kg 6.4 kg
Roll Size 1350 mm x 33.33 m (45m2) 2 x 500 mm x 30 m (30m2)
Reflectance Reflective Face: 97%
Anti-glare Face: 95%
Emittance Reflective Face : E0.03
Anti-glare Face: E0.05
Max Span 2.4 m without support mesh

Air-Cell Permifloor Datasheet


GreenStuf Polyester Underfloor is designed for the thermal insulation of existing and new timber framed buildings in accordance with Energy Efficiency requirements of the Building Code of Australia.

Building Regulations: GreenStuf Underfloor will support and assist in meeting the following provisions of the BCA: BCA Volume One - Class 2-9 Buildings Section J - Energy Efficiency: Performance requirement JP1 Section F - Health and Amenity: Sound Transmission and Insulation. Performance requirement FP5.1 and FP5.4 BCA Volume Two - Class 1 and Class 10 Buildings Part 2.6 -Energy Efficiency: Performance requirement P2.6.1 Part 3.8.6

GreenStuf Polyester Underfloor Datasheet


The EarthWool® underfloor insulation is a new generation of softer and sustainable glasswool insulation. Advanced compression packaging reduces handling time and the risk of damage in transit and on-site.

The product is specifically designed for overhead installation in tight crawl spaces. Eureka supplies an Ultra High Performance (high density) R2.5 batt. This batt is non–itch and provides a snug friction fit between joists.

EarthWool underfloor batts provide a cost-effective thermal and acoustic barrier for energy-efficient construction. It is perfect for the DIY handyman as the consistent quality, low dust, and clean-cutting resilient fibres make fabrication easy and installation fast.

ECOSE® Technology

Earthwool products made using ECOSE® Technology benefit from a binder which has no added formaldehyde and is based on renewable bio-based materials instead of traditional petroleum-based chemicals. The technology has been developed for Knauf Insulation’s glasswool and rock mineral wool products, enhancing our environmental credentials whilst maintaining the thermal, acoustic and fire performance and mechanical properties.

ECOSE Technology gives a distinctive new look to Knauf Insulation’s Earthwool products - a natural shade of earthy brown, with no added dyes, bleaches or artificial colours. Earthwool is also less dusty and has a much softer and friendlier feel whilst retaining its rigidity and stiffness properties. The ECOSE Technology binder is up to 70% less energy intensive than the formaldehyde binders used in traditional glasswool insulation. As there is no formaldehyde or phenol used in the manufacturing process for Earthwool, it also improves the indoor air quality of buildings where these products are installed (compared to conventional glasswool products).

Knauf Insulation’s Earthwool® products provide Australia with a new choice of highly sustainable insulation.

Earthwool Underfloor Datasheet
Earthwool Underfloor MSDS

Contact Eureka on 1800 626 624 or use our enquiry form for more information on Floor insulation and pricing.

More: Floor, Wall and Ceiling Products


There are number of ceiling insulation types that are used in the construction stage of a residential of commercial building.


Underfloor insulation is a key part of a complete insulation solution. Cold air comes up through your floor and has a direct impact on your warmth.


There are number of wall insulation types that are used in the construction stage of a residential or commercial building. The correct choice is essential.