firestopping

English

firestopping (uncountable)

Material used as a firestop.
- 1938, Building Materials and Structures Report, volumes 82-108, page 17:
  General points where firestopping was removed shall be tightly filled with asbestos, mineral wool, or other incombustible insulating material.
- 2006, Francis L. Brannigan, Building Construction for the Fire Service, page 543:
  Firestopping, even if installed, is often made ineffective by maintenance work or new installations, for example, cable TV.