Ardo Cold Rooms Insulated Panels

PIR v PUR Panelling

PIR (Polyisocyanurate) and PUR (Polyurethane) are both types of rigid foam insulation used in insulated panels for building temperature controlled storage such as cold rooms, dry aging rooms or blast chillers, or for the strategic division of industrial spaces into usable and food-safe areas. While they have some similarities, there are several key differences between the two materials.

  1. Thermal Performance: PIR has better thermal performance than PUR. PIR has a lower thermal conductivity, which means it is a better insulator and can provide higher R-values (a measure of thermal resistance) than PUR for the same thickness.
  2. Fire Resistance: PIR is more fire-resistant than PUR. PIR has a higher temperature resistance and can withstand higher temperatures without melting or releasing toxic gases. This makes PIR a safer option for buildings where fire resistance is a concern.
  3. Moisture Resistance: PUR is more resistant to moisture than PIR. PUR is a closed-cell foam, which means it is more water-resistant and less likely to absorb moisture than PIR. This makes PUR a better option for use in humid or wet environments.
  4. Cost: PIR is generally more expensive than PUR. The higher cost of PIR is due to its better thermal performance and fire resistance.
  5. Environmental Impact: PUR typically has a higher environmental impact than PIR. PUR contains a blowing agent that is a greenhouse gas, while PIR uses a different type of blowing agent that has a lower global warming potential.
  6. Speed of Construction: PUR panels are typically found in most (but not all) cam lock cold rooms. These typically come in pre-formed kits are are relatively quick to assemble.
  7. Flexibility: A PIR Panel is used in most bespoke work as it can be altered, mitred and formed

In summary, PIR and PUR insulated panels have different properties and characteristics. PIR has better thermal performance and fire resistance, while PUR is more moisture-resistant and typically less expensive. The choice between the two will depend on the specific needs of the building project.

Ardo Cold Rooms offer both types of panelling for all our temperature controlled and panelling applications. Why not speak to one of our team today on 01179 646 497 or email us at