Rock wool sandwich panels significantly reduce noise transmission. According to ISO 717/82 and UNI 8270/7 standards, panels utilizing a 120 kg/m³ density rock wool core can achieve a sound insulation rating of RW = 29–30 dB. In terms of sound absorption, the panels meet the criteria for a DELTA LA value of 15.7 dB(A), as per the ISO 354/85 standard.
Rock wool sandwich panels offer excellent structural strength and stability. They consist of two metal face sheets bonded to a rock wool core; the metal sheets provide structural support and protection, while the rock wool core acts as a buffer against stress. Because the rock wool core and the two steel sheets are bonded into a unified, integrated structure, the panels exhibit high overall rigidity. Applying the "I-beam principle" from the mechanics of materials, the high-strength metal face sheets-positioned at the outermost layers, furthest from the neutral axis-bear the primary stress, while the lightweight rock wool core fills the center and resists shear stress, thereby significantly enhancing the panel's overall flexural rigidity. A potential drawback of rock wool sandwich panels is that their strength may be insufficient for certain applications.
The rock wool core possesses strong water-repellent and moisture-resistant properties. Environmental performance testing for these panels includes assessments of formaldehyde emissions and volatile organic compounds (VOCs). The rock wool material has a thermal load shrinkage temperature of 643°C and a moisture absorption rate of 3.9%.