Fire and smoke contained
Fire stopping is the generic term for the installation of suitable materials to seal openings in fire walls or floors. These walls/floors will be creating fire compartments that are designed to contain fire and smoke in the event of a fire.
Integrity for breaches
During the construction of new buildings and the refurbishment of existing ones, various trades will create breaches through these fire compartments.
It is not normally possible to reinstate these walls or floors with the original material and even if it was, it would not be sufficiently incorporated into the original material/structure to ensure it maintained its integrity in the event of a fire.
Furnace
tested
Fire stopping products are specifically designed to be retro fitted into various substrates and opening sizes. They are then tested in a furnace to simulate their performance in the built environment in a fire scenario.