Underfloor Insulation

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Expol: The ultimate underfloor insulation for all seasons

Expol Underfloor Insulation acts as a barrier to the flow of heat, working to keep your home warm in winter and cool in summer. A well-insulated home can reduce your need for heating and cooling, which in turn is an effective way to reduce the greenhouse gas emissions that your home produces.

If you are still investigating which underfloor insulation is the best solution for your home, check out our comprehensive guide to underfloor insulation below, which covers all of the choices available in the Australian market.

How Expol Underfloor Insulation works

Heat naturally moves from places of high thermal energy (hot air) to places of low thermal energy (cool air). In your home, heat continues to move around the inside of your home until the temperature is consistent in all areas of your home.

Without proven insulation solutions such as Expol Underfloor Insulation, this can become an issue in winter when the warm air escapes and leave your home uncomfortably cold, and in summer when unwanted hot air can sit inside your home.

Expol Underfloor Insulation helps you manage the natural flow of heat throughout your home and achieve a comfortable temperature cost-effectively year-round.

Find out how much Expol you will need for your home.

Expol Underfloor Insulation
Home timber flooring
Expol home

Do it once, do it right with Expol

Expol Underfloor Insulation is ideal for both retrofitting under existing floors and new floor installations. Installation is quick and easy, and each pack comes with a complete set of instructions. Watch our installation video for installation tips.

Expol Underfloor Insulation is also often used in home renovation, extension or knock down rebuild projects to improve and modernise the insulation properties of existing homes. If you’re renovating an existing home, using Expol can give it the modern insulation solution it deserves.

Find your closest Expol stockist here.

Why choose Expol Underfloor Insulation?

Easy to install

Available nationwide

Fire Retardant

Moisture Resistant



50 Year Warranty

Branz Appraised

High Strength

Light weight & easy to install

Manufactured in Australia

Support local

Expol Underfloor Insulation FAQs

What sizes is Expol Underfloor Insulation available in?

Expol Underfloor Insulation rigid polystyrene panels are 1.2 metres long and 60mm in thickness and are produced in four standard joist widths (560mm, 470mm, 410mm, 360mm) to fit between most standard joists in Australian homes. All Expol panels are concertina cut on both sides to allow for a compression of up to 20mm, which enables makes installation quicker and easier while ensuring a snug fit between your joists.

Is Expol Underfloor Insulation fireproof?

Yes. Expol Underfloor Insulation is fireproof, thanks to the presence of a fire retardant used during the manufacturing process, and the moisture resistant properties of expanded polystyrene.

Where is Expol Underfloor Insulation made?

Expol Underfloor Insulation is a 100% Australian made insultation solution. All Expol products are manufactured to the highest quality standards at Foamex owned and operated facilities in Australia.

Is Expol Underfloor Insulation recyclable?

Yes, Expol is a truly sustainable insulation solution and is a 100% recyclable product. In fact, Foamex is one of the largest recyclers of EPS in Australia.

How much does Expol Underfloor Insulation cost?

The cost of Expol Underfloor Insulation will vary depending on the size of your house and which Expol product you need. To help you get an accurate estimate to insulate your home, have a look at our online Expol Pack Calculator.

Customer Reviews

I'm very happy with the end result, we didn't use our heater half as much after the Expol insulation was installed and our baby boy crawling around the floor probably noticed the most difference, without getting such cold hands and knees. We are very happy with the product and service provided.


We are very happy with the installation of Expol, even though it's only been a bit over a week since it was installed we have noticed a big difference & find we are turning the air conditioner off about 1 hour before going to bed because the lounge room is so warm, which we have never done before. I would have no hesitation in recommending your product & your service, which was excellent.


Time to enjoy warmer feet and
save up to 12% on your heating bill.