High Thermal Performance Insulation Panel

Product Introduction

PIRMAX GR-ISO3 Panel is a modified PIR (Polyisocyanurate) rigid thermoset panel that can be used in many applications.  PIRMAX GR-ISO3 Panel is the next generation in high performance insulation products for commercial and residential developments. Designed to achieve excellent thermal value where minimal cavity is available.

PIRMAX GR-ISO3 Panel has amongst the highest thermal values of rigid board insulation products, giving buildings continued thermal efficiency throughout their life span.  PIRMAX GR-ISO3 Panel is a light weight closed cell Polyisocyanurate foam core panel. Easy to handle and allows fast fixing to any application.

PIRMAX GR-ISO3 PANEL is CFC free with zero Ozone Depletion Potential (ODP), does not release Volatile Organic Compounds (VOC’s) and is manufactured in Australia.


  • Complies with AS/NZS 4859.1.
  • Amongst the highest thermal values of rigid board insulation due to the product’s low thermal conductivity.
  • Achieves a Group 3 BCA/NCC fire classification as a wall and ceiling lining when tested in accordance with AS ISO 9705:2003 (R2016) and AS 5637.1:2015.
  • Achieves excellent fire hazard results when tested to AS/NZS 1530.3.
  • Not corrosive to metal over time.
  • Able to custom manufacture to different sizes and facing colours.
  • Fast manufacturing turnaround times.
  • 15 year system warranty available.

Australian Made

PIRMAX GR-ISO3 PANEL is manufactured in Australia by an Australian owned and operated company, and guarantee the highest quality insulation material.  Raw materials and chemicals are also sourced from Australian companies wherever possible. As our products are wholly Australian Made we take pride in our manufacturing to ensure a high standard of quality, service and value.


Soffit (Carpark Application), Wall Systems, Raised Underfloor, Ground Floor Slabs, Ceiling Systems, Roofs, Domestic and Commercial Ducting.

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Product Details
Product NamePIRMAX - GR-ISO3 Panel “modified PIR rigid thermal insulation”
Thermal Conductivity0.020 W/mK*
Panel Thickness20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm
Panel Dimensions2400mm x 1200mm (2.88m2)
Also can be cut to custom lengths and sizes
Edge TreatmentSquare Edge

* Thermal conductivity as at April 2020

Product R Values

Nominal ThicknessDeclared Product R-value at 23ºC
PIRMAX HR 20mmR0.89
PIRMAX HR 25mmR1.05
PIRMAX HR 30mmR1.30
PIRMAX HR 40mmR1.90
PIRMAX HR 50mmR2.35
PIRMAX HR 60mmR2.85
PIRMAX HR 70mmR3.30
PIRMAX HR 75mmR3.55
PIRMAX HR 80mmR4.00
PIRMAX HR 90mmR4.50
PIRMAX HR 100mmR5.00*

* Thermal values as at April 2020.

Product Testing

Complies to AS/NZ 4859.1 and NCC/BCA Compliant
Group Classification (Wall & Ceiling)AS 5637.1 (ISO 9705)Group 3*
Ignitability IndexAS 1530.30 Range 0-20
Spread of Flame IndexAS 1530.30 Range 0-10
Heat Evolved IndexAS 1530.30 Range 0-10
Smoke Developed IndexAS 1530.3Silver-1, White-2
Compressive StrengthAS 2498.3>125 (kPa)
Water Vapour ResistivityASTM E96>100 (MNs/gm)

*System tested with PIRMAX GR-ISO3 double sided reflective PIR insulation, Hilti X-IE 6 fasteners and PIRMAX GR-ISO3 embossed tape.

Water UseNo water used in the manufacturing process
Ozone depleting substancesCFC free with zero Ozone Potential (ODP), does not release Volatile
Organic Compounds (VOC’s)
ManufacturingUses Terol® (Recycled PET Polyol)
Occupational Health & SafetyNot Hazardous
No Formaldehyde
Does not release Volatile Organic Compounds (VOC)
TransportAustralian made & owned, not transported from overseas, minimal carbon footprint
Energy EfficientLong term energy savings and environmental benefits
Specification Notes
When specifying, state the following:

Product Name: PIRMAX GR-ISO3 PANEL _____mm
The insulation to be installed shall be PIRMAX GR-ISO3 Panel System.
This system comprises of: PIRMAX GR-ISO3 double sided reflective PIR insulation, Hilti X-IE 6
fasteners and PIRMAX GR-ISO3 embossed tape. This system provides a Group 3
AS ISO 9705:2003 (R2016) and AS 5637.1:2015 fire classification with an R Value of _______.
Product is Australian Made, manufactured by PIRMAX Pty Ltd and shall be installed in accordance with the manufacturers installation instructions to provide a 15 year system warranty.