A firestop or fire-stopping is a form of passive fire protection that is used to seal around openings and between joints in a fire-resistance-rated wall or floor assembly. Firestops are designed to ma
Fire test of mortar-based firestop
Pipe with metallic piping penetrations in a 2-hour fire-resistance rated concrete floor slab
Inadequate firestop with rockwool
Firestop mortar seal of a cable tray
A firewall is a fire-resistant barrier used to prevent the spread of fire. Firewalls are built between or through buildings, structures, or electrical substation transformers, or within an aircraft or
Firestop
…from creating a route by which fire and smoke can spread that would otherwise have been fire resisting construction, e.g. where a pipe passes through a firewall. Fire stopping is also to seal around gaps between fire resisting constructions, e.g. the linear gap between a wall and the floor above, in order for…
Firewall residential construction, separating the building into two separate residential units, and fire areas
Example of a firewall used to inhibit the spread of a fire at an electrical substation
A building under construction, showing the structurally independent cinderblock firewalls subdividing the building
Building 4 of the Waynesboro Outlet Village, showing a concrete firewall running through the building