Polymax R2.5 | NSW Sydney | Polyester Underfloor Insulation
Feeling the freeze in winter or baking from below in summer?
Your home loses precious comfort through uninsulated floors. Polymax R2.5 Underfloor Insulation helps lock in warmth, block out heat, and cut energy bills—without lifting a floorboard.
🚛 Delivery direct to your doorstep
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Pickup available at Ingleburn
Usually ready in 5+ days🗓️ Availability: In Stock
🔄 Replacement guarantee
🏅 70 years product warranty
Pairs well with
Polymax R2.5 | NSW Sydney | Polyester Underfloor Insulation
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Product details
Description
At a glance
Typical Coverage: 9.0m2
Cost per m2: 430mm: $16.67 | 450mm: $17.77
Dimensions: 10m x width x 140mm x 2 Rolls Per Pack
Minimum Packs per Order: 1
Made in Australia
Frequently Asked Questions
Will underfloor insulation make a noticeable difference?
Yes—especially in homes with timber floors. Without underfloor insulation, up to 20% of your heating and cooling can be lost through the floor. You’ll likely notice warmer floors in winter, reduced draughts, and better temperature stability throughout your home - making it a smart, long-term investment for both comfort and cost savings. Many people also report needing their heater or air con less often after installation.
Is it safe and environmentally friendly?
If you’re using Polymax, yes! It’s made from 100% polyester (like a doona), contains no nasty chemicals, and won’t irritate your skin or lungs. It’s also non-toxic, low allergen, and fully recyclable—so it’s better for you and the planet. And it carries a 70 year warranty.
What is underfloor insulation made from?
Our most popular underfloor insulation, Polymax, is made from 100% thermally bonded polyester fibres—the same safe, soft material used in quilts and pillows. It contains no glass wool, formaldehyde, or itchy fibres, making it safe to touch, low allergen, and ideal for DIY installs. It’s also fully recyclable and proudly made in Australia.
Can I install it myself, or do I need a professional?
If you're reasonably handy, you can absolutely DIY underfloor insulation! Polymax is safe and itch-free to handle. We provide clear, step-by-step guides to help you through it. That said, if your floor is very low to the ground or access is tricky, you may prefer to hire a pro. Please contact us for a referral to a trusted installer in your area.
Perfect for
🔹 Keeping Your Home Comfy – Helps keep your house warm in winter and cool in summer
🔹 Saving Money – Stops heat and cool from escaping, so you don’t need to use your heater or air conditioner as much
🔹 Soft and Safe – Made from soft, non-itchy polyester insulation that won’t cause allergies
🔹 Long-Lasting Protection – Strong and stays in place. Guaranteed to work for you for 70 years
What You'll Love
100% Polyester
Made out of 100% recyclable polyester
80% recycled plastic bottles
Made out of up to 80% recycled plastic bottles
Non toxic, non itchy
Not toxic, non itchy, non allergenic, formaldehyde-free
No chemicals or glues
Heat-bonded. No binding chemicals or glues
Rodent resistant
Rats don't like to chew on it. Snug install ensures a rodent-free experience
Not impacted by water or mould
Water doesn't affect polyester. No mould issues
Fire rating NCC compliant
Fire compliant and safe
Maintains its loft
Maintains its thickness, will not collapse
Staples securely
Staples securely between joists. Suitable for variable width joists
Icons: Flaticon.com
What difference does it actually make?
Before
After