The short answer
Why an Explosion Can Follow a Fire
A gas leak fire does not always burn off the leaking fuel. If the supply line remains open, gas keeps flowing even while flames are visible. That unburned gas can build up in enclosed spaces, and any spark, static charge, or pilot light can ignite it with explosive force.
The heat from the initial fire can also weaken pipes and fittings, causing new leaks. Structural damage from the fire may trap gas in pockets behind walls or under floors. This is why you should never assume the danger is over once flames are out.
- Shut off the gas main if you can reach the valve safely.
- Do not turn lights or switches on or off.
- Avoid using phones or flashlights inside the house.
- Open doors and windows only if it is safe to do so.
- Leave the property and stay a safe distance away.
- Call 911 from outside the building.
What to Do Right After a Gas Fire
Your first move after any gas-related fire is to get everyone out of the house. Do not stop to gather belongings or investigate the source. Once you are outside, call the fire department and your gas utility company from a neighbor's phone or your cell phone away from the building.
Do not re-enter the house until emergency responders say it is safe. Even if the fire appears out, gas may still be leaking. The pros will need to shut off the supply, ventilate the structure, and test for residual gas before anyone returns.
How the Pros Handle the Gas Risk
After emergency responders secure the gas supply, water damage and fire cleanup pros may be called in to assess the property. They use specialized meters to detect gas concentrations in the air and in hidden spaces like wall cavities. This helps them determine whether the structure is safe to enter.
Their work usually involves ventilating the home, removing damaged materials, and checking for hidden leaks in pipes. They also coordinate with your utility company to ensure the gas line is properly capped or repaired before any restoration begins.
- Gas detection meters identify lingering fuel in the air.
- Ventilation fans push out dangerous vapors.
- Wall and floor cavities are inspected for trapped gas.
- Damaged pipe sections are isolated and sealed.
- Restoration only starts after the atmosphere tests safe.
Preventing a Gas Leak Explosion
Prevention starts with knowing where your gas shutoff valve is located and how to turn it off. If you live in Daytona Beach, keep that location written down near your main breaker panel. Practice turning the valve with a wrench so you can act quickly in an emergency.
Regularly inspect gas appliances and lines for signs of wear, corrosion, or loose connections. A faint rotten egg smell is often added to natural gas to alert you to leaks. If you detect it, leave the house immediately and call your gas company from outside.
After the Fire: Water Damage Risks
Firefighting efforts can leave significant water damage in your home. Water from hoses and sprinklers soaks into drywall, insulation, and flooring, creating a breeding ground for mold if not dried quickly. The pros use industrial fans and dehumidifiers to dry out the affected areas.
Even if the fire was small, water damage can be extensive. Hidden moisture in walls and under floors can lead to rot and structural issues. A water damage inspection helps identify all affected areas so that cleanup and repairs address the full scope of the problem.
- Waterlogged drywall may need to be cut out and replaced.
- Insulation holds moisture and should be removed if saturated.
- Wood framing must be dried thoroughly to prevent warping.
- Mold can start growing within 24 to 48 hours.
- Professional drying equipment reaches moisture in hidden spaces.
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Call Now (386) 272-5697Frequently asked questions
How long after a gas leak can an explosion happen?
An explosion can happen at any time as long as gas is leaking and an ignition source is present. It could be minutes or hours after the leak starts. Once you smell gas or see a fire, leave immediately and do not return until emergency responders clear the scene.
Should I turn off the gas after a fire?
Only if you can reach the shutoff valve safely without putting yourself in danger. If the valve is near the fire or in a smoky area, do not attempt it. Your priority is to evacuate and call 911. The gas utility or pros will handle the shutoff from a safe distance.
What should I do with water damage after a gas fire?
Once the gas is shut off and the scene is safe, address water damage quickly. Remove standing water if possible and ventilate the area. Contact water damage pros to assess hidden moisture and begin drying. Prompt action helps prevent mold and further structural damage.