Fire-resistant rock wool sandwich panels is special building stuff made to protect buildings from fire. They use rock wool inside, which is really strong and can handle heat very good. People put these polyurethane composite panels usually in walls and also roofs. GLOSTAR produce high quality ones that work well for different kind of constructions. They keep the place safe and save some energy too. Becuse of their special design, builders and owners find them both safe and usefull.