Fire Sprinkler Water Damage: What Happens After the Fire Is Out?
What happens when a fire sprinkler system goes off?
In many commercial fires, the sprinkler system ultimately affects a much larger area than the flames themselves. We recently saw this firsthand when a small fire triggered a sprinkler system that impacted 100,000 square feet of warehouse and office space. When a fire sprinkler activates, it can release hundreds of gallons of water within minutes. While that helps save lives and limit fire spread, it can also cause significant water damage to drywall, flooring, inventory, and electrical systems. After the fire department leaves, most buildings require professional water extraction, drying, smoke cleanup, and documentation for insurance.
Fire sprinklers do an incredible job of reducing fatality risks in building fires. According to some official studies, the risk reduction is something like 80-89%! So, in light of what we’re about to discuss, we want to clarify that we’re very pro fire sprinklers. The safety you gain in exchange for the water damage in the aftermath of a smoke or fire event is simply incomparable. Now let’s discuss that second part of it.
Does Every Fire Sprinkler Go Off During a Fire?
Most people think that all the sprinkler heads go off at once like in the movies. But in reality, only the sprinkler heads closest to the heat source actually go off. Even so, just one head can spray hundreds of gallons of water in minutes. This high water flow quickly:
Floods floors
Soaks drywall
Ruins electrical systems
Damages inventory or furniture
This water actually sits in sprinkler pipes for months or even years, so it isn’t exactly clean tap water either. When this water finally gets released and starts hitting your walls and floors, it can soak deep into the structure and even leave trapped moisture behind if not dried and treated accordingly.
What Should I Do After a Fire Sprinkler Goes Off?
Make sure everyone’s safe and the fire department has cleared the building.
Find and shut off the main water control valve to stop the flooding.
Call Provision or any professional restoration company to pump the water out.
Don’t get into the area until the fire department says it’s finally safe because electrical accidents are common when water meets boxes and appliances.
Once the area is safe enough, the water valve—usually located in a utility room or outside the building—must be shut down. After the water is off, call for professional help before letting your insurance know.
How Much Damage Can One Fire Sprinkler Cause?
We recently handled a massive sprinkler aftermath project in a Gainesville warehouse. An electric golf cart caught fire inside the 100,000-square-foot building and the fire triggered the overhead sprinkler system. It successfully put out the fire, but also soaked the entire warehouse and even ran into the adjacent office spaces.
How Quickly Should Water Be Removed After a Fire Sprinkler Activates?
Mold can begin growing within 24-48 hours a water damage event, so quick response is crucial. Every hour gives more time for the water to seep further, soak deeper, or breed contaminants.
The client called us on a Friday afternoon. Tim, one of our upper management leaders, arrived on-site within 90 minutes along with a 20-person water mitigation crew to extract the water as quickly and cleanly as possible.
Immediate Extraction and Containment
We worked together with the warehouse owner and the local fire department. Once cleared, our team started extracting water from the warehouse floor. We moved employees and office items out of the wet areas. We then set up plastic containment barriers, which isolated the dry office areas from the wet warehouse. We made flood-cuts on the wet drywall and took the ruined flooring out to let the subfloor open up and dry out.
How Is Fire Sprinkler Water Damage Cleaned Up?
We set up professional drying equipment across the affected areas using:
Phoenix air movers
commercial dehumidifiers
HEPA air filtration devices
Because of the golf cart fire, a heavy smoke smell filled the entire building. We used Titan 4000 Hydroxyl machines to safely neutralize the smoke while people kept working in the building. We successfully finished the water extraction and necessary demolition over the weekend. The customer was beyond happy with our quickness and communication.
Does Insurance Cover Fire Sprinkler Water Damage?
Insurance companies evaluate water damage using the 4 C's of Insurance Claims:
Cause: What triggered the sprinkler? Was it a fire or a mechanical failure?
Coverage: Does your specific policy cover water damage from fire protection systems?
Condition: Was the system properly maintained before the incident?
Confirmation: Do you have clear documentation and moisture readings to prove the damage?
Documentation here is critical as insurance companies pay claims based on real proof, not just assumptions. We keep a clear and measured record of everything using our thermal imaging cameras, moisture meters, and even Matterport 3D scans to create a digital map of the damage. This kind of detailed proof will help your insurance adjusters determine your water damage coverage.
Get a Free, No-Strings-Attached Inspection
If your fire sprinkler system is activated, don’t wait until water soaks deeper into your building. Provision Property Restoration is here to help by:
Checking out the current fire sprinkler system
Measuring the moisture
Explaining our findings
Letting you decide how to proceed
We offer free, no-strings-attached inspections in Sugar Hill, Gainesville, and the greater north Atlanta area. Call us today to get our team to your site quickly!
Frequently Asked Questions about Fire Sprinkler Systems
Can I clean up fire sprinkler water myself?
We don’t recommend it. Sprinkler water is often highly polluted. It can carry rust, oil, and bacteria. Professional extraction and drying equipment are necessary to prevent mold.
How long does it take for mold to grow after a sprinkler leak?
It can begin to grow within 24 to 48 hours. If the materials remain wet, mold spores will multiply quickly.
Will my insurance pay for a professional dry-out after fire sprinklers?
If the sprinkler went off due to a covered peril, like an accidental fire, your insurance policy should cover the mitigation costs. It’s always best to call us for an inspection before filing a formal claim.
Is Fire Sprinkler Water Clean?
Usually no. Fire sprinkler pipes often hold stagnant water for long periods, which can contain rust, sediment, bacteria, and debris. While the water helped extinguish the fire, it should be treated as contaminated during cleanup.
Is Fire Damage or Water Damage Usually Worse After a Sprinkler Activates?
In many commercial fires, the sprinkler system affects a much larger area than the flames themselves. While the fire may stay confined to one location, sprinkler water can spread throughout the building, soaking drywall, flooring, inventory, equipment, and office spaces. That's why professional fire restoration almost always includes water damage mitigation as well.
