How to Clean Up Fire Extinguisher Residue

A fire starting on your property, even a small one, can be stressful at best and, at worst – frightening. A fire extinguisher can be a lifesaver in situations like this, allowing you to put out the flames before they escalate into a larger blaze.

However, once the flames are out you need to set about cleaning up the fire extinguisher residue, and this can prove challenging. Fire extinguisher residue is the leftover material discharged from the extinguisher after it has been used to smother the flames. 

Depending on the type of extinguisher used, this residue could be a dry powder, foam, or even a wet chemical. While the residue is harmless to the touch, cleaning it up promptly is essential to avoid any potential health hazards or damage to your property.

This blog provides instructions on how to clean fire extinguisher residue, ensuring your space is safe and spotless once more.

Types of Fire Extinguishers

Fire extinguishers come in various types, each designed to combat different classes of fires. Understanding these types will help you determine the best way to clean fire extinguisher residue.

• Water extinguishers are ideal for Class A fires (involving ordinary combustibles like wood, paper, and cloth). Fire extinguisher residue cleanup involves simple water and soap.
• Dry chemical extinguishers are commonly used for Class A, B (involving flammable liquids), and C (involving electrical components) fires. The fire extinguisher powder residue they leave behind can be slightly acidic or basic, requiring careful cleanup.
• Foam extinguishers are used to extinguish Class A and B fires. The residue is a mix of foam and liquid that needs to be dealt with promptly to prevent staining.
• CO2 extinguishers are effective for Class B and C fires. They leave minimal residue, mainly consisting of dry ice pellets that evaporate.
• Wet chemical extinguishers are designed for Class K fires (cooking oils and fats). The residue is a soapy, wet substance that needs thorough cleaning because it can cause slips and falls if left on the floor.

Top Tips: How to Clean Fire Extinguisher Residue

Here are some essential tips to help you effectively and safely clean up fire extinguisher residue, ensuring your space is thoroughly cleaned and free from harmful chemicals:

1. Identify the Type of Fire Extinguisher Used

Before cleaning up fire extinguisher residue, check the label or tag on the fire extinguisher you used to identify its type. This will determine the appropriate cleanup method and safety precautions needed. 

2. Wear Protective Clothing

Always wear gloves, goggles, and a mask to protect yourself from inhaling or touching the residue. Even though most types of fire extinguisher residue are relatively non-toxic in small amounts and generally safe to touch, it’s better to err on the side of caution and handle them carefully.

3. Ventilate the Area

Open the windows and doors to allow fresh air to circulate. This helps clear any lingering fumes or dust particles from the air.

4. Clean Up the Residue By Type

For dry chemical extinguisher residue, follow these steps:

1. Use a vacuum with a HEPA filter to remove loose powder.
2. Wipe surfaces with a damp cloth and a mixture of mild detergent and warm water.
3. Rinse the area with clean water and dry thoroughly.

For foam extinguisher residue, follow these steps:

1. Use a wet/dry vacuum to remove as much foam as possible.
2. Clean the area with a solution of warm water and mild detergent.
3. Rinse and dry the area to prevent any foam residue from becoming slippery.

For CO2 extinguisher residue, follow these steps:

1. Allow any dry ice pellets to evaporate.
2. Wipe down the area with a dry cloth to remove any remaining residue.
3. For wet chemical extinguisher residue, follow the next steps.
4. Use a cloth to wipe up the wet residue.
5. Clean the area with a solution of hot water and soap.
6. Rinse thoroughly to ensure no slippery residue remains.

How to Clean Fire Extinguisher Residue From the Floor

Cleaning fire extinguisher residue from floors requires a thorough approach to prevent slips and ensure cleanliness. Here’s how to do it: 

Dry Chemical Residue:

1. Vacuum the area using a HEPA filter vacuum.
2. Mop the floor with a mixture of water and mild detergent.
3. Rinse with clean water and dry the floor completely.

Foam Residue:

1. Use a wet/dry vacuum to remove the foam.
2. Mop the floor with soapy water.
3. Rinse and dry the floor to avoid slippery surfaces.

How to Clean Fire Extinguisher Residue From an Oven or Stovetop

Cleaning fire extinguisher residue from an oven or stovetop requires special care to ensure all surfaces are safe for cooking again. If you have an electric oven or stove, turn the power off to these appliances before you proceed with the following steps.

Dry Chemical Residue:

1. Remove any food or utensils.
2. Vacuum the residue using a HEPA filter vacuum.
3. Wipe down with a damp cloth and a mixture of baking soda and water.
4. Rinse thoroughly and wipe dry.

Wet Chemical Residue:

1. Wipe away the residue with a cloth.
2. Clean the surface with hot, soapy water.
3. Rinse and dry thoroughly.

Trust Restoration 1 For Thorough and Efficient Fire and Smoke Restoration 

While you might be able to manage the initial cleanup after a small fire, it’s best to call a professional restoration company for further assistance. Even minor fires can cause significant hidden damage. If not properly addressed, smoke and soot can penetrate your property, leading to long-term issues like persistent odors, structural damage, and health hazards.

The Restoration 1 of Huntington Beach team specializes in comprehensive fire and smoke restoration services. We don’t just clean the surface, we address the underlying damage to ensure your home or business is truly safe and restored. 

Our certified technicians handle everything from soot removal to odor control and structural repairs. You can rely on us to return your property to its pre-fire condition efficiently and thoroughly.

For your restoration needs, contact us anytime at 714-332-2513. We are ready to serve you 24/7.