Definitions for "Fire stop"
Keywords:  joists, smoke, closure, stuffing, stud
A board placed within a frame wall to prevent a flue-like action in case of a fire.
A block or stop used either in a wall of a building or between joists to prevent the spread of fire and smoke through air space.
A means of preventing fire or smoke from traveling through a structure by filling concealed air spaces with fire-resistive materials.