Summary: When initiating a fire attack, the most effective tactic is to apply water directly to the level where the fire is located, especially in basement fires, according to Jesse Marcotte of FSRI, ISFSI and Northville Township (MI) Fire Department. He says flowing water through basement windows from the exterior can significantly reduce heat and toxic gases throughout the structure, improving conditions for potential victims on upper floors and firefighters making entry. The key is using a targeted stream, informed by a 360° size-up and thermal imaging, to hit the seat of the fire fast and early.
Why You Should Attack Basement Fires at Their Level
For years, firefighters were warned that exterior water flow into a structure—especially through basement windows—could push fire and endanger lives. But that thinking is changing fast, and Jesse Marcotte of FSRI is helping lead that shift with clear, research-backed advice.
The Old Myth: You’ll Push the Fire
The traditional mindset was simple: if you flow water from outside in, you're going to push the fire. That led to hesitance in attacking basement fires from the exterior—especially through windows or below-grade doors.
But we now know better. Thanks to advances in fire dynamics research, particularly from FSRI, the conversation has shifted.
What the Data Shows: It’s About Stream Type and Placement
Modern research makes one thing clear: not all water is equal, and not all entry points are wrong. When you use the correct nozzle pattern and stream—whether it's smooth bore or straight stream—you can flow water into a basement from the outside and make a big impact without endangering victims or crews.
Jesse emphasizes this point: the key is to start your attack on the level the fire is on. If the fire’s in the basement, that’s where your water should go—fast.
Start with a 360° Size-Up and Thermal Scan
When possible, complete a full 360° size-up to confirm fire location. Thermal imaging cameras can assist by identifying heat signatures even when fire isn't visible on the Alpha side. This helps crews know where to direct their stream from the exterior if necessary.
And once you’ve identified the fire’s location, don’t hesitate—get water on it.
Why Speed Matters: It’s Not Just About the Fire
The goal isn’t just suppressing flames. Toxic gases and intense heat rise fast from basement fires. Getting water into the compartment quickly limits the spread of heat and gases into livable spaces—like the first and second floors—where victims may still be located.
In other words, faster water placement in the basement can improve conditions throughout the entire home.
Join the Heated Online Debate
This clip featuring Jesse Marcotte is generating serious buzz in the fire service world. Firefighters are jumping into the comments to debate the myth, share their tactics, and compare nozzle choices. Whether you’re a believer in the new approach or still holding onto the old-school method, this conversation is one you’ll want to follow—or join.
Check out the video and see what your fellow firefighters are saying.
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