Sandwich panels consist of two outer metal sheets (steel or aluminum) with an insulation core sandwiched between them, bonded with specialized adhesives.

The excellent performance of stone wool insulation are commonly adopted for fire-resistance and noise reduction in buildings. Sandwich panels are widely used in commercial and industrial steel building construction for external walls, roofs, and ceiling panels. As the product is pre-fabricated in the factory, stone wool core sandwich panels have been used successfully employed in various fast track construction projects.