4.8/5 stars based on 550+ reviews

Product details

Description

Made from 100% non-irritating polyester, these batts are safe to handle with no itch, no loose fibres, and no harmful chemicals—making installation easy for DIYers, owner-builders, and professionals alike. Polymax insulation snugs securely between floor joists, reducing heat loss, blocking draughts, and dampening noise from below. Whether you're insulating a new build, renovation, or existing home, this durable, eco-friendly solution will help maximise comfort and energy efficiency

✅ Superior thermal insulation – Warmer in winter, cooler in summer.

✅ Blocks underfloor draughts – Helps reduce energy loss & lower power bills.

✅ Non-itch, no loose fibres – Safe & easy to handle.

✅ Eco-friendly & non-toxic – Free from harmful chemicals.

✅ Excellent acoustic insulation – Reduces noise transfer through floors.

✅ Fits snugly between joists – No sagging, long-lasting performance.

✅ Ideal for renovations, retrofits & new builds – Perfect for homeowners & builders. Upgrade your home’s comfort with Polymax Underfloor Insulation—shop now!

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

Load video:

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

What difference does it actually make?

Before

After