Great stuff fireblock insulating foam sealant is a ready to use minimal expansion insulating foam sealant that fills and insulates gaps up to 3 4 inch to restrict airflow.
Fire blocking insulation.
Thermafiber fire and sound guard mineral wool insulation batt 24 bags model sg 25 p3 15 47 221 view the owens corning thermafiber mineral wool insulation.
Rockwool comfortboard 80 is a rigid mineral wool insulation sheathing board that is non combustible water repellent fire resistant and sound absorbent.
Smoke and gases readily travel horizontally as well so preventing horizontal air movement such as within a dropped ceiling has its own name.
F ire blocking aims to prevent or at least slow the vertical movement of flames smoke and gases by sealing off concealed spaces like stud cavities and soffits.
Unfaced fiberglass batt insulation used as fireblocking shall fill the entire cross section of the wall cavity to a minimum height of 16 inches 406 mm measured vertically.
When piping conduit or similar obstructions are encountered the insulation shall be packed tightly around the obstruction.