Do Rats Cause House Fires? The Shocking Truth

As homeowners, we all take steps to keep our families safe and protect our homes from damage. One potential threat that may not immediately come to mind is the possibility of a house fire.

While there are many known causes of fires, some may be surprised to learn that rodents can also play a role in starting fires.

In this article, we will explore the connection between rats and house fires, and provide some tips for preventing this potential danger.

Do Rats Cause House Fires

Rats can potentially cause house fires in certain situations. Rats are known to gnaw on various materials, including electrical wires, which can pose a fire hazard.

Their sharp teeth can damage the insulation around electrical wires, exposing the live wires and creating a risk of short-circuiting or sparking, leading to a potential fire.

Additionally, rats are known to nest in warm areas, such as attics or wall voids, and may use materials like insulation, paper, or other flammable items in their nests, increasing the risk of a fire starting.

To prevent rats from causing house fires, it’s important to rat-proof your home, such as sealing entry points, keeping food stored securely, and maintaining cleanliness to avoid attracting rats.

Cause Of Fire By Rats

Regular electrical wiring inspection for any signs of rat damage, such as frayed wires or gnaw marks, is also essential.


If rat activity is suspected, addressing the infestation promptly and employing pest control measures to eliminate the rats from your home is important.

It’s worth noting that while rats can potentially cause house fires, they are not the sole cause.

Other factors, such as faulty electrical wiring, overloaded circuits, or human error, can also contribute to house fires.

Proper fire safety measures, such as having working smoke alarms, practicing fire drills, and following electrical safety guidelines, are important in preventing house fires regardless of the potential presence of rats.

How to Prevent Rats From Causing Fires

To prevent rats from causing fires in your home, here are some steps you can take:

Keep your home clean and tidy: Rats are attracted to food sources, so keeping your home clean and free of food debris can help deter them from entering your premises.

Properly store food and trash: Store food in sealed containers made of durable materials that rats cannot easily chew through.

Additionally, dispose of trash properly and securely to prevent rats from accessing it.

Seal entry points: Rats can enter your home through small cracks, gaps, or holes in walls, floors, or foundations.

Seal these entry points with durable materials, such as steel wool or caulk, to prevent rats from gaining access to your home.

Maintain a clutter-free environment: Avoid accumulating unnecessary clutter in and around your home, as rats can use it as nesting material. Keep storage areas tidy and remove any items rats can use for nesting.

Inspect and maintain electrical wiring: Regularly inspect your home’s electrical wiring for any signs of damage or gnaw marks.

If any issues are detected, repair or replace the wiring promptly to prevent rats from causing damage that can lead to fires.

Employ pest control measures: If you suspect a rat infestation, immediately eliminate them using appropriate pest control measures. This may include traps, baits, or seeking professional pest control services.

Practice fire safety measures: Regardless of the potential presence of rats, practicing general fire safety measures is crucial.

This includes having working smoke alarms, keeping fire extinguishers handy, avoiding overloading electrical circuits, and following electrical safety guidelines.

Cause Of Fire By Rats

Cause Of Fire By Rats

Rats can potentially cause fires in homes or buildings in several ways:

Gnawing on electrical wires: Rats have sharp teeth and are known to gnaw on various materials, including electrical wires.

Their gnawing can damage the insulation around the wires, exposing the live wires and creating a risk of short-circuiting or sparking, which can lead to a fire.

Nesting in electrical or heating equipment: Rats may build their nests in warm areas, such as around electrical or heating equipment.

They can use nesting materials like paper, fabric, or insulation, which can be flammable, and if these materials come into contact with heat sources, it can lead to a fire.

Chewing on flammable materials: Rats may chew on flammable materials, such as cardboard, wood, or plastic, to create nests or access food sources. If they chew on materials close to heat sources or electrical equipment, it can increase the risk of a fire starting.

Accidental ignition: Rats are known to be curious and may accidentally cause fires by chewing on or knocking over flammable items, such as candles, matches, or lighters, which can ignite and lead to a fire.

Can Rats In Attic Cause A Fire?

One thing that may not be on our radar is the possibility of rats in our attic causing a fire. Yes, you read that right. Rats in the attic can pose a fire hazard.

The first thing to understand is that rats have a tendency to chew on anything they can get their teeth on. This includes electrical wires, insulation, and other materials found in attics. Rats have a pair of large incisors that never stop growing.

They continuously have to gnaw on hard objects to keep them in check. Unfortunately, this can seriously damage your home’s infrastructure, including electrical wiring.

Electrical wires are particularly vulnerable to rat damage. When rats chew on electrical wires, they expose the wires’ inner conductive material.

This is where the danger lies. Exposed wires can overheat and cause a spark that can ignite nearby insulation or other flammable materials. In addition, exposed wires can also create a short circuit that can trigger an electrical fire.

How To Fix Rat-Chewed Wires

If you discover rat-chewed wires in your home, addressing the issue promptly is important to prevent potential electrical hazards and fires.

Here are some steps you can take to fix rat-chewed wires:

Turn off the power: Before attempting any repairs, ensure that the power to the affected area is turned off at the circuit breaker or fuse box to prevent the risk of electric shock.

Assess the damage: Carefully inspect the extent of the damage caused by the rat chewing. Identify the affected wires and determine the severity of the damage, such as partial or complete wire damage.

Cut out the damaged section: If the damage is limited to a small section of the wire, you may need to cut out the damaged portion using wire cutters or wire stripping tools. Make sure to cut beyond the damaged area to ensure that all the compromised wire is removed.

Strip the wires: If you have cut out a section of the wire, strip the ends of the remaining wires to expose the bare copper conductors.

Use wire stripping tools to carefully remove the insulation without damaging the conductors.

Connect the wires: If the damage is limited to a small section of the wire, you can use wire connectors or wire nuts to join the exposed copper conductors of the wires.

Follow proper wiring techniques and make sure the connections are secure.

Insulate the repaired wires: Once the wires are properly connected, use electrical tape or heat shrink tubing to insulate the repaired section of the wires. This will protect the repaired wires from further damage and ensure the integrity of the electrical connection.

Test the repaired wires: After completing the repairs, turn on the power and test the wires to ensure the electrical connection works properly.

If everything is functioning as expected, you can safely restore power to the affected area.

Percentage Of House Fires Caused By Rats

According to a study by the National Fire Protection Association (NFPA), about 25 percent of house fires of unknown origin are caused by rodents.

While this may seem like a small percentage, it is still significant, especially when you consider the potential consequences of a house fire.

Rats chew through electrical wiring and insulation, which can cause a spark and ignite nearby materials.

They also like to make their nests in warm and cozy areas, such as inside walls or attics, which can put them near electrical wiring.

One of the main reasons rats are attracted to homes is because of the food and shelter they can find there.

Rats will often enter homes in search of food, and once they find a steady source, they will return.

They can also enter homes through small cracks or openings, making it important to seal up any potential entry points.

Additionally, cluttered or unkempt areas can provide rats with the perfect hiding spot, making detecting an infestation difficult.

How Do Rats Actually Cause A Fire?

These rodents are known for their sharp teeth and ability to gnaw through almost anything, including plastic, wood, and electrical wiring.

This last fact is particularly important when it comes to their potential to cause fires. Rats often chew on electrical wiring, leading to exposed wires and short circuits.

Short circuits occur when the electrical current in a circuit is disrupted, causing the flow of electricity to stop abruptly.

When this happens, the heat generated by the electrical current can create a spark, which in turn can ignite any flammable materials nearby.

If rats have chewed through the wiring in your home or business, there is a risk that a short circuit could occur and start a fire.

What To Do If Your House Catches Fire By Rats

If your house catches fire for rats or any other reason, it’s crucial to prioritize your safety and take immediate action. Here are the steps you should follow:

Alert everyone in the house: If you are inside, shout or use a smoke alarm to alert everyone in the building. Make sure everyone is aware of the fire and quickly evacuate the premises.

Call emergency services: Dial the emergency services, such as 911 or your local fire department, to report the fire. Provide them with the location, details of the fire, and any other relevant information.

Exit the building: Leave the building immediately and avoid using elevators. Stay close to the ground if there is smoke, as smoke rises and can make it difficult to breathe.

Follow the pre-planned escape route if available, and use the nearest exit to exit the building as quickly and safely as possible.

Do not re-enter the building: Do not attempt to re-enter the building once you have safely exited. It can be dangerous to return to a burning building or retrieve belongings. Leave the firefighting to trained professionals.

Stay low and cover your mouth: If you encounter smoke while exiting, stay low to the ground where the air is less toxic and cover your mouth with a cloth or your hand to prevent inhalation of smoke and toxic fumes.

Alert neighbors and authorities: If possible, alert your neighbors and the fire department if you believe the fire may spread to nearby buildings.

Follow emergency personnel instructions: Once outside, follow the instructions of emergency personnel and stay safe from the building.

Provide them with any relevant information about the fire or possible causes, including the presence of rats.

Do not attempt to extinguish the fire: Leave the firefighting to trained professionals. Do not attempt to extinguish the fire yourself, especially if it has spread or is out of control.

Seek medical attention if needed: If anyone has sustained injuries or smoke inhalation, seek medical attention promptly.

Contact insurance and restoration services: After the fire is extinguished and the authorities have deemed it safe, contact your insurance company and restoration services to assess the damage and start the process of repairing and rebuilding.


While rats may not directly cause fires, their habit of chewing on electrical wires can create a potential fire hazard. Taking proactive measures to prevent rats from entering your home and damaging electrical wiring is essential.

Keeping your home clean, sealing entry points, using rat-proof wiring, and regularly inspecting and repairing damaged wires can significantly reduce the risk of rat-related fires.

It’s crucial to prioritize fire safety in your home and take precautions to protect your property and loved ones from potential dangers.