firestop
Penetration seal system
A firestop is a barrier or seal designed to prevent fire and smoke from spreading through openings in walls, floors, or ceilings—particularly where pipes, cables, or ducts penetrate fire-rated assemblies.
Building codes require firestops at penetrations to maintain a structure's fire resistance rating.
The term also functions as a verb: The contractor firestopped all the cable runs before inspection.
Swells from heat exposure
- caulkWaterproof gap filler
- mortarGrinding bowl or binder
- puttyPliable sealing compound
- sealantGap-blocking substance
collar · wrap · pillow · foam · silicone · mastic · fiberglass · ceramic
Division into distinct sections
- egressMeans of departure
- flame-retardantInhibits ignition and burning
- fireproofingMaking materials resist combustion
Entry into something
- sleeveGarment's arm portion
- collarNeck encirclement
- jointShared by multiple parties
- openingGap or start
conduit · pipe · duct · HVAC · electrical · plumbing · gap · void
Network access control system
- partitionBarrier separating spaces
- compartmentEnclosed subdivision of space
- damperDevice reducing vibration or flow
- curtainFabric hung for privacy
membrane · bulkhead · division · enclosure · containment · separation
Formal assessment of condition
- certificationAttestation of qualification
- listingRecorded item in catalog
- approvalFavorable opinion given
- documentationWritten proof or instructions
specification · testing · laboratory · third-party · authority · permit · engineer · contractor
intumescent
Swells from heat exposure
sealant · collar · wrap · pillow · foam · silicone · mastic · fiberglass · ceramic · gypsum
compartmentalization
Division into distinct sections
- egressMeans of departure
- flame-retardantInhibits ignition and burning
- fireproofingMaking materials resist combustion
penetration
Entry into something
opening · conduit · pipe · duct · HVAC · electrical · plumbing · gap · void · seal
firewall
Network access control system
- partitionBarrier separating spaces
- compartmentEnclosed subdivision of space
- damperDevice reducing vibration or flow
curtain · membrane · bulkhead · division · enclosure · containment · separation
inspection
Formal assessment of condition
- certificationAttestation of qualification
- listingRecorded item in catalog
- approvalFavorable opinion given
documentation · specification · testing · laboratory · third-party · authority · permit · engineer · contractor
- gas appliancesgas oven, gas stove, gas range, gas furnace, gas heater
firestopfire spread
Flames extending their reach
penetration · opening · breach · gap · kindling
firestopsprinkler
Water-dispersing lawn fixture
fire extinguisher · smoke detector · fire alarm · fire sprinkler
firestopkindling
Material for starting fires
fuel source · accelerant · fire starter · ignition source · tinder
stop, fire, stopped, stopping, stopper, fireman, fireproof, stopgap