Isomax X300 XPS 90mm (R2.7) 2400mm x 600mm (1.44m2)

SKU: IMX300-90
0 out of 5

$74.22 per/sheet inc. GST

74.21774.217
$51.54 p/m2 inc. GST

Isomax X300 XPS 90mm (R2.7) 2400mm x 600mm (1.44m2)

ISOMAX X300 XPS is a high-density, rigid, extruded polystyrene (XPS) insulation panel. It is available in a variety of thicknesses and is suitable for a range of construction applications within residential, commercial and industrial buildings, making it one of the most versatile insulation products in the market. ISOMAX X300 XPS will last as long as the structure in which they are incorporated.

Please note this product is bonded as 1 x 40mm & 1 x 50mm sheet. No returns are available on this product. 3 – 5 days lead times apply

Isomax X300 XPS can be used in the following applications:

Floor Insulation – Under Slab/ Slab Edge/ Cold Storage, Wall Insulation – Basement Perimeter Wall/ Cool Room Wall/ Double Cavity Brick Wall, Roof Insulation – Inverted Roof/ Garden Rooftop/ Green Roof/ Thermal Break Spacers

Technical data sheet available here

Other sizes/ ratings available – 30mm R0.940mm R1.250mm R1.560mm R1.870mm R2.180mm R2.4100mm R3.0

📞 Call us on 03 8339 7111 to confirm stock or ask about lead times
File:Google Maps icon (2015-2020).svg - Wikipedia Pickup location: 56 Yellowbox Drive, Craigieburn VIC
🕒 Business hours: Mon–Thurs 6:30am–4:00pm | Fri 6:30am–3:00pm
🚚 Delivery is also available across Melbourne during business hours

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Most items generally stocked, but lead times may apply.
Areas up to 200klm from our Craigieburn warehouse, delivery rates are calculated by your postcode on checkout.
200klm from our Craigieburn Warehouse or further - delivery rates need to be confirmed prior to purchase. Please click here to email us for delivery rates.

Description


Isomax X300 XPS 90mm – Built for Performance and Reliability

Isomax X300 XPS 90mm insulation panel offers a robust solution for modern construction needs. Designed with precision, it delivers consistent thermal protection, moisture resistance, and structural strength across a wide range of applications.

Isomax X300 XPS 90mm – Superior Thermal Efficiency

Thanks to its closed-cell extruded polystyrene (XPS) composition, the panel actively resists moisture and retains its insulating properties in harsh conditions. With a thermal conductivity of 0.0337 W/mK, it significantly reduces heat transfer, helping to lower energy costs and improve comfort. Its R-value of 2.7 makes it suitable for slabs, cavity walls, and roofing systems.

Isomax X300 XPS 90mm – Easy Installation and Handling

You can install the Isomax X300 quickly and efficiently. Its lightweight design allows for easy transport and handling, while standard cutting tools make shaping simple. As a result, installation time decreases and overall productivity improves. The square edge finish and skin-on surface also ensure a clean, professional look.

Strength That Supports Heavy Loads

The panel offers a compressive strength of 300kPa, making it ideal for load-bearing applications. It performs reliably under pressure, whether used beneath concrete slabs or in rooftop systems. Builders trust its durability to maintain structural integrity over time.

Environmentally Responsible Choice

Isomax X300 supports sustainable building practices. It contains no ozone-depleting substances, emits low or no VOCs, and is 100% recyclable. Therefore, it aligns well with green building standards and environmentally conscious projects.

Certified for Compliance and Safety

The panel meets key industry standards, including AS/NZS 4859.1 for thermal performance and AS/NZS 1530.3 for fire resistance. It also complies with the Building Code of Australia (BCA), ensuring peace of mind for builders and specifiers alike.

Conclusion: A Smart Investment in Long-Term Performance

Whether you’re insulating a basement, rooftop, or wall cavity, the Isomax X300 XPS 90mm panel delivers lasting performance, energy efficiency, and environmental benefits. Choose Isomax for insulation that works today and endures tomorrow.

Other sizes/ ratings available – 30mm R0.940mm R1.250mm R1.560mm R1.870mm R2.180mm R2.4100mm R3.0

📞 Call us on 03 8339 7111 to confirm stock or ask about lead times
File:Google Maps icon (2015-2020).svg - Wikipedia Pickup location: 56 Yellowbox Drive, Craigieburn VIC
🕒 Business hours: Mon–Thurs 6:30am–4:00pm | Fri 6:30am–3:00pm
🚚 Delivery is also available across Melbourne during business hours

File:Facebook icon.svg - Wikimedia Commons      File:Instagram icon.png - Wikipedia

Additional information

Dimensions 2400 × 600 mm