Why We Do What We Do - Real Stories of Firestopping Making a Difference
Most people think fire protection is about alarms, sprinklers, and fire extinguishers.
Those systems are critical; however, there is a less commonly known, but equally critical component involved with fire protection.
Very few people outside a few highly regulated industries are familiar with passive fire protection. Passive fire protection systems include compartmentation, rated walls, floors, and other barriers which are intended to slow the spread of fire and smoke long enough for occupants to escape, or for first responders to extinguish the fire before it spreads. Firestopping is what allows rated barriers to perform according to their intended design.
When firestopping fails, fires don’t behave the way buildings were designed for.
When they work as intended, lives are protected, often without anyone ever knowing how fortunate they are.
Here are real-world examples of both in chronological order.
Hospitals Rely on “Defend in Place”, Made Possible by Firestopping
It is significantly more difficult to evacuate occupants from hospitals than from business occupancies. Moving patients is risky, time-consuming, and sometimes impossible. That’s why healthcare facilities are designed around defend-in-place strategies. This strategy only works if smoke compartments and rated barriers perform correctly.
Smoke Is the Real Killer, and It Travels Fast
MGM Grand Hotel Fire, Las Vegas
In the MGM Grand fire in November of 1980, most victims were far from the flames. Smoke traveled vertically through shafts, chases, and other openings, overwhelming occupants on upper floors.
This is the scenario every AHJ and facility manager worries about:
- Fire stays low
- Smoke spreads high
- Occupants never see the fire, but still don’t survive
Firestopping’s role is simple and critical:
Stop smoke from using buildings as highways.
The Lesson:
Most fire fatalities are caused by smoke, not flames.
When compartmentation is compromised, at shafts, slab edges, joints, or above-ceiling penetrations, buildings become vertical highways for smoke. In both new and existing facilities, passive fire protection only works if it remains continuous and intact.
One unsealed gap can undermine an entire life safety strategy. When firestopping holds, smoke stays contained and time stays on your side. When it doesn’t, the building works against you.
When Buildings Become Chimneys: High-Rise Fires and Vertical Spread
First Interstate Bank Building, Los Angeles
In this high-rise fire that took place in May of 1988, investigators concluded that the lack of proper firestopping between floor slabs and the building exterior allowed fire to spread from floor to floor.
Vertical fire spread doesn’t require open doors or broken windows. It only needs:
- Unprotected slab edges
- Poorly fire stopped curtain wall interfaces
- Mechanical and electrical penetrations left unsealed
The Lesson:
Fire doesn’t need open doors to spread upward, only unprotected slab edges, curtain wall gaps, or unsealed penetrations.
Perimeter fire containment and tested firestop systems are what keep a single-floor fire from becoming a multi-floor event.
In high-rise buildings, vertical spread is preventable when the barriers hold.
For Facility Managers and AHJs:
This is why perimeter fire containment and tested firestop systems are not “optional upgrades.” They’re what keeps a single-floor fire from becoming a multi-floor emergency.
A hospital fire resulting in fatalities while demonstrating why rated barriers matter
Southside Regional Medical Center, Virginia
In 1994, a fire at Southside Regional Medical Center in Virginia started in a patient room. Tragically, four patients died.
What’s often overlooked is this:
The fire itself was largely contained to the room of origin, with limited extension into the corridor. That containment prevented an even larger catastrophe.
The investigation highlighted compartmentation and smoke control features; the same systems hospitals depend on every day.
The lesson:
Fire doesn’t have to consume an entire floor to be deadly. Smoke moves quickly, and it will find every unsealed penetration, joint, or gap above the ceiling.
In healthcare, a single unprotected penetration can cripple an entire smoke compartment.
When The Fire Starts Above the Ceiling
Leigh Valley Hospital Roof Fire, Pennsylvania
In February of 2026, a late-night roof fire at Lehigh Valley Hospital–Dickson City forced the evacuation of more than 70 patients after flames broke out in a connected building on the hospital campus.
The fire did not start in a patient room.
It started above, in the roof assembly of an attached structure.
But in healthcare facilities, connected buildings share risks.
Smoke and water intrusion quickly became the primary concern. Even when fire originates outside of main patient care areas, smoke will travel through concealed spaces, roof lines, shafts, and unprotected openings if given the opportunity.
The lesson:
In complex campuses where older structures connect to active healthcare spaces, every rated barrier, walls, ceilings, roof assemblies, and penetrations, must perform exactly as designed. Defend-in-place only works when compartments hold.
For Facility Managers and AHJs:
Roof spaces, attics, and transitional areas are not secondary concerns. They are part of the life safety strategy. When firestopping and compartmentation are intact, a roof fire stays a roof fire. When they are not, smoke finds its way to patients who cannot simply walk out.
A hospital never stops being a hospital, even at 9:40 at night.
When Firestopping Works, You Rarely Hear About It
Not every fire becomes a headline, and that’s the point.
In more recent incidents, properly constructed and maintained compartments have kept fires confined to the space of origin, allowing:
- Safe evacuation or defend-in-place
- Faster Fire Department Control
- Minimal building damage
- Quicker return to service
These are the fires that don’t go viral.
They’re also the fires where firestopping quietly did its job.
Success in passive fire protection usually looks like “nothing happened.”
Why This Matters in New Construction, and Existing Buildings
For healthcare, higher education, and complex facilities, the risk isn’t just fire, it’s renovation, expansion, and constant change:
- New cabling
- Added medical equipment
- Data upgrades
- Above-ceiling work that no one sees again
Every new penetration is a chance to either:
- Preserve the building’s life safety strategy
or - Undermine it completely
Why We Do What We Do
We firestop because:
- Hospitals depend on it to protect patients who cannot evacuate
- Universities depend on it to protect thousands of occupants who don’t know the building
- Firefighters depend on it to slow fire behavior
- AHJs depend on it to ensure code intent is met
Firestopping isn’t glamorous.
It doesn’t beep, spray, or flash.
But when it’s missing, the consequences are unforgettable.