What kind of fire stop material is used in a pipe choke?

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Multiple Choice

What kind of fire stop material is used in a pipe choke?

When sealing around pipes in a fire-rated assembly, you want a material that actively responds to heat to preserve the seal. Intumescent firestop materials swell up as temperatures rise, filling any gaps around the pipe and forming an insulating barrier. This expansion is exactly what a pipe choke needs to maintain the fire rating and stop the spread of flames and smoke even under heat. Cementitious products are rigid and can crack or lose contact with the pipe, fibrous materials may compress or degrade over time, and astral ceramic isn’t a standard firestop category. So the intumescent option best fits a pipe choke because it expands to seal as the fire grows.

When sealing around pipes in a fire-rated assembly, you want a material that actively responds to heat to preserve the seal. Intumescent firestop materials swell up as temperatures rise, filling any gaps around the pipe and forming an insulating barrier. This expansion is exactly what a pipe choke needs to maintain the fire rating and stop the spread of flames and smoke even under heat. Cementitious products are rigid and can crack or lose contact with the pipe, fibrous materials may compress or degrade over time, and astral ceramic isn’t a standard firestop category. So the intumescent option best fits a pipe choke because it expands to seal as the fire grows.

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