PU vs PIR vs Rock Wool Sandwich Panels: Which One Should You Choose?

PU, PIR, and Rock Wool are currently common core materials for sandwich panels. Due to differences in density, thermal insulation performance, water absorption, fire resistance, applicable temperature, and price, their applications also differ.

A detailed comparison is as follows:

Based on the above, we found that PIR sandwich panels offer the best thermal insulation, followed by PU sandwich panels, with rock wool sandwich panels performing the worst. However, rock wool sandwich panels have the best fire resistance and good sound absorption. Therefore, we recommend PIR sandwich panels for cold storage, PU Sandwich panels for general factories and high-temperature cold chain applications, and rock wool sandwich

panels for theaters and large warehouses with high fire resistance and sound insulation requirements.