Expol Underfloor Insulation is an easy to use, DIY home insulation system made from lightweight but durable expanded polystyrene.

Expol Underfloor Insulation by Foamex is a cost effective way to make your home more comfortable and energy efficient by creating a thermal barrier to stop heat entering in summer and escaping in winter. Easily fitted to new and existing homes, including pole houses, Expol will ensure your home is protected year-round from extreme temperatures.

Manufactured using the highest quality, Australian made expanded polystyrene, Expol features flame retardant properties and contains no CFC's. Designed to fit snugly between timber floor joists, with concertina cuts on both sides of the panel allowing for compression of up to 20mm. Non-allergenic, safe and easy to install, Expol Underfloor Insulation is available Australia wide from a range of stockists.

Click here to visit the Expol website and to find your nearest stockist.

Features & Benefits

  • lightweight reverseLightweight
  • cost twoCost effective
  • weather 2Weather resistant
  • recycle 2100% recyclable
  • Easy to install & maintain
  • Available Australia wide
  • Lightweight yet strong and durable
  • High strength = no sagging
  • Cost effective and economical
  • 50 year warranty
  • Improves the insulation rating of your home
  • Recyclable & sustainable
  • Includes flame retardant additives
  • Non-allergenic, no itching

High performance home insulation

If your home has a timber floor you could be losing up to 15% of your heating via the flooring. While carpet and underlay help to provide some insulation, to maximise heat retention, underfloor insulation helps create an effective thermal barrier. Expol Underfloor Insulation from Foamex allows you to create a warm, dry and healthy home while reducing your energy footprint.

Available in a range of sizes, light in weight, and quick to install, the Expol system is an easy DIY project and a smart way to start saving money on your energy bills. Expol Underfloor Insulation is BRANDZ appraised, comes with a 50 year limited product warranty, and conforms to the minimum R-vale of 1.4 for timber floors of AS/NZS 4859.1:2002. All panels have a yellow stripe down one edge to confirm compliance with manufacturing standard AS 1366.3:1992.

Expol Underfloor Insulation is available at a range of leading home hardware retailers across Australia, and we provide full installation instructions on all bags for self-installers.

  • Product Sizes
  • Thermal Conductivity
  • Nominal R-Values
SL Grade k = 0.047 W/mk*
S Grade k = 0.0394 W/mk*
M Grade k = 0.0380 W/mk*
H Grade k = 0.0366 W/mk*
VH Grade k = 0.0350 W/mk*

* k value @ reference 23°C

Minimal R-Value of 1.4 for timber floors
360 1200mm L x 360mm W x 60mm D 12 per bag 5.18m2
410 1200mm L x 410mm W x 60mm D 11 per bag 5.41m2
470 1200mm L x 470mm W x 60mm D 10 per bag 5.64m2
560 1200mm L x 560mm W x 60mm D 9 per bag 6.05m2
Group 23
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State Sales Offices
(02) 9773 1655
VIC (Bayswater Nth Office)
(03) 8739 5800
VIC (Somerton Office)
(03) 9219 6200
VIC (Coolaroo Office)
(03) 9302 1022
(08) 8393 5900
(07) 3390 8955
(03) 6263 6900
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