Expol Under-Floor Insulation is perfect for your existing or new home. Placed snuggly between the floor joists it will ensure your home is protected from the extreme temperatures under your floor. Stop heat entering in summer and escaping in winter, enjoy warmer feet and save around 12% on your heating bill.

The Ultimate Choice

Expol Under Floor is designed specifically for insulating between the joists of timber floor homes and buildings.

Flame retardant polystyrene panels are 1.2 metres long and 60mm in thickness, produced in four standard widths to fit between most standard joists.

All panels are con-cer-tina cut on both sides to allow for compression of up to 20mm for ease of installation, and to ensure a snug fit between the joist.

Expol Under Floor is ideal for both retro-fit under existing floors, and new floors.

The product has a 50 year warranty and has a minimum R Value of 1.4.

Now with a simple DIY step-by-step guide.

Free Duratuff Select Vinyl Cladding Quote

Iinsulation Standard

Expol under-floor insulation complies with the Australian and New Zealand Standard AS/NZS 4859.1:2002.

Expol is back by a BRANZ appraised 50 year limited product warranty.

Manufacturing Standard

All panels have a yellow stripe down one edge to confirm compliance with manufacturing standard AS 1366 Part 3 1992 for SL grade.

Contact the team at Austech today or order your Expol Underfloor Insulation online.

For installation instructions watch the step by step instructions on the below clip.


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