Description Sika® Backer Rod Fire is a workable, mineral wool based backing material wrapped with a glass-fibre yarn. Uses Sika® Backer Rod Fire is designed for fire resistant joint sealing in horizontal and vertical building structures. Sika® Backer Rod Fire is used in conjunction with SikaHyflex®-250 Facade or Sikaflex® AT Connection. Benefits Easy to apply Adapts irregularities of joints
