Fire stopping is the containment of fire or smoke through rated assemblies by the application of tested fire rated assemblies. There are 4 primary types of openings or joints associated with fire and smoke resistive rated assemblies, to which tested fire-stopping systems may be applied to prevent the spread of fire, smoke or gases:
Joints - Joints between fire-rated construction components (e.g. wall to wall, wall to floor, wall to ceiling)
"Intumescent" means that the material expands when exposed to fire or heat to fill a void in the penetration caused by the deformation or combustion of the penetration item.
"Elastomeric" products are flexible and prevent passage of heat and gases while permitting movement of the assembly.
There are several fire-stopping material manufacturers. Each manufacturer has their material tested and listed for specific applications. Not all materials are interchangeable with other "brands" or systems.
Some examples of materials or "components" found in tested and listed systems: