Is Fiberglass Boat Flammable? Igniting The Truth

Boating is a popular pastime worldwide, with millions of people hitting the water yearly. While it might seem relaxing and carefree, it’s important to take safety seriously when out on the water.

One question that often comes up is whether or not fiberglass boats are flammable. This is an important question to consider when considering boat safety, and several factors must be considered.

In this article, we’ll explore the issue of fiberglass boat flammability and provide some insights and information that can help you stay safe on the water.

What Is Fiberglass Boat?

A fiberglass boat is a type of watercraft constructed primarily using fiberglass-reinforced plastic (FRP). It is a composite material of fine glass fibers embedded in a polymer resin matrix.

Combining these materials creates a strong and lightweight structure resistant to corrosion, rot, and damage from marine organisms.

The construction of a fiberglass boat typically involves laying multiple layers of fiberglass fabric into a mold and saturating it with resin.

This process is known as fiberglass layup. The resin hardens and bonds the fibers, creating a rigid and durable hull.

After the hull is formed, additional components such as bulkheads, decks, and cabins are added.

Fiberglass boats offer several advantages over other boat-building materials. They are lighter than traditional wooden boats, which enhances fuel efficiency and maneuverability.

Fiberglass is also highly resistant to water absorption, reducing the risk of rot and deterioration.

Fiberglass boats require less maintenance than wooden boats and are generally more affordable than boats made from materials such as aluminum or carbon fiber.

Fiberglass boats are popular in various recreational boating applications, including fishing, cruising, water sports, and sailing.

They are available in various sizes and configurations, from small personal watercraft to large yachts.

Is Fiberglass Boat Flammable?

The short answer is yes; fiberglass is flammable. However, it’s important to note that fiberglass has a much higher ignition and flash point than other common boat-building materials such as wood.

Fiberglass typically has an ignition point of around 750 degrees Fahrenheit, which is much higher than the ignition point of wood, around 400 degrees Fahrenheit.

It’s also worth noting that the resin used in fiberglass construction can be flammable. Resin is a liquid that is used to bind the glass fibers together.

Is Fiberglass Boat Flammable

When the resin is wet, it is not flammable but can become flammable when it dries.

The resin contains a volatile organic compound (VOC) that can evaporate and create a fire hazard.

So how can you prevent fiberglass boats from catching fire? The first step is to take precautions when using flammable materials on board.

This includes gasoline, propane, and other fuels that can ignite and cause a fire. Always store these materials safely and securely, and turn off all engines and appliances before refueling.

Another important step is to ensure that your boat’s electrical system is up to code and in good working condition.

Faulty wiring and electrical equipment can create a spark that can ignite a fire. Regularly inspect your boat’s electrical system and have any issues addressed by a qualified electrician.

Causes A Boat To Catch On Fire?

Several factors can contribute to a boat catching on fire. Here are some common causes:

Electrical Issues: Faulty wiring, overloaded circuits, or malfunctioning electrical components can generate heat and sparks, potentially igniting flammable materials onboard.

Fuel Leaks: Leaking fuel, such as gasoline or diesel, can create a highly flammable environment. If fuel vapors come into contact with an ignition source, like a spark or open flame, it can lead to a fire or explosion.

Engine Compartment Fires: Mechanical failures, such as fuel line ruptures, oil leaks, or overheating engines, can result in fires within the engine compartment.

Improper Fueling: Careless fueling practices, such as spillage or overfilling the fuel tank, can create a hazardous situation. Fuel can accumulate in bilges or other areas, increasing the fire risk.

Cooking and Heating Equipment: Using stoves, grills, or portable heaters onboard, especially if not properly maintained or operated, can lead to fires. Grease fires while cooking is also a common cause.

Smoking: Discarded cigarette butts or improper disposal of smoking materials can ignite flammable materials on the boat.

Flammable Materials: Storing flammable substances such as propane tanks, gasoline cans, or chemicals inappropriately or near heat sources can contribute to fires.

Arson: Intentional acts of vandalism or arson can cause a boat to catch fire.

To minimize the risk of a boat fire, following proper safety procedures, performing regular maintenance and inspections, ensuring proper ventilation, and having appropriate fire extinguishing equipment onboard is essential.

It’s also important to be aware of and comply with local regulations and safety guidelines related to boat operation and fire prevention.

What Temperature Does Fiberglass Boat Burn?

Generally, fiberglass can start to burn at temperatures above 450 degrees Fahrenheit. The material can begin to break down at this temperature, and the fibers can start to melt, releasing toxic fumes into the air.

The rate at which fiberglass burns will depend on the intensity of the heat source and the amount of oxygen available.

It is important to note that fiberglass boats are designed to be fire-resistant, and many are equipped with fire suppression systems to prevent fires from spreading.

However, taking precautions to reduce the fire risk when using a fiberglass boat is still essential.

One of the most effective ways to prevent fiberglass boats from burning is to avoid exposure to high temperatures.

This means keeping them away from open flames, hot surfaces, and other heat sources.

It is also important to ensure that any electrical or fuel systems on board are adequately maintained and free from leaks or other potential fire hazards.

What Happens If Your Boat Catches Fire?

If your boat catches fire, it is essential to act quickly and follow proper emergency procedures to ensure the safety of everyone onboard. Here’s what you should do:

Alert Everyone Onboard: Immediately notify all passengers and crew members about the fire. Sound the alarm and make sure everyone is aware of the situation. Remaining calm and organized is crucial.

Call for Help: Contact the nearest emergency services or the Coast Guard to report the fire and provide them with your location, boat description, and the number of people onboard.

Follow their instructions and provide any additional information they may need.

Follow Emergency Plan and Evacuation Procedures: If you have an emergency plan, follow it. Assign specific roles to crew members to assist with firefighting or evacuation.

If the fire is uncontrollable or spreading rapidly, focus on evacuating all passengers to a safe location.

Wear Personal Flotation Devices (PFDs): Ensure everyone onboard is wearing a properly fitted PFD. This will help if the situation requires abandoning the boat and entering the water.

Attempt to Extinguish the Fire (If Safe to Do So): If the fire is small and contained, and you have the appropriate firefighting equipment, attempt to extinguish it.

Use a fire extinguisher, following the PASS technique (Pull the pin, Aim at the base of the fire, Squeeze the handle, and Sweep from side to side).

Focus on your safety and never put yourself at risk if the fire is too large or spreading rapidly.

Cut Off Fuel and Electrical Systems: If it is safe, shut off the fuel supply and turn off all electrical systems, including batteries and switches.

This will help prevent the fire from spreading and reduce the risk of explosions.

Move to a Safe Location: If the fire is uncontrollable or spreading rapidly, move all passengers to a safe location away from the fire. Consider moving upwind to avoid inhaling smoke or toxic fumes.

Prepare to Abandon Ship: If the fire continues to grow and poses an immediate threat to the safety of everyone onboard, prepare to abandon the boat.

Ensure everyone has their PFDs and gather essential emergency equipment such as life rafts, signaling devices, and emergency supplies.

Enter the Water Safely: If you need to abandon the boat, follow proper procedures for entering the water, such as using ladders or other available means.

Stay close to the boat for better visibility and to increase the chances of being spotted by rescue personnel.

Remember, the safety of human life should always take precedence over property. It is crucial to practice regular emergency drills, be familiar with the location and operation of safety equipment, and stay informed about boating safety regulations and procedures.

Are Boat Fires Common?

According to the U.S. Coast Guard, 4,168 recreational boating accidents in 2019, only 247 (or about 6%) involved fires or explosions. While any boat fire is serious, these numbers suggest that they are relatively rare occurrences.

That being said, it’s still important to take steps to prevent boat fires from happening in the first place. One of the biggest causes of boat fires is electrical issues.

Many boats have complex electrical systems prone to shorts and other malfunctions. It’s important to have your boat’s electrical system regularly checked by a qualified professional to ensure everything is in good working order.

Are Boat Fires Common

Another common cause of boat fires is fuel-related issues. Boats use flammable fuel, which means that any leak or spill has the potential to ignite.

It’s important to take care when fueling your boat and to ensure no leaks or spills.

Additionally, regularly inspecting your fuel system is a good idea to ensure everything is functioning correctly.

Other factors contributing to boat fires include improper use of flammable materials (such as gasoline or propane), smoking on board, and engine overheating.

By taking simple precautions such as avoiding smoking on board, keeping flammable materials away from heat sources, and monitoring your engine’s temperature, you can significantly reduce the risk of a boat fire.

Can A Boat Battery Catch On Fire?

While boat batteries can pose a fire risk, it is relatively rare for them to catch fire. However, certain circumstances or factors can increase the likelihood of a battery-related fire. Here are a few key considerations:

Battery Age and Condition: Older or poorly maintained batteries are more prone to problems that can lead to fire hazards.

Over time, battery terminals can corrode, wiring can become frayed, and internal components can degrade, increasing the risk of electrical malfunctions.

Improper Installation or Use: Incorrect installation of batteries, such as loose connections or inadequate ventilation, can create conditions that may lead to overheating and potential fires.

Additionally, using the wrong type of battery or overloading the electrical system can strain the battery and increase the risk.

Charging Process: Charging batteries improperly, using incompatible chargers, or leaving them unattended during charging can result in overheating and potential fire hazards.

Following the manufacturer’s guidelines for charging procedures and using appropriate chargers is crucial.

Electrical System Issues: Faulty wiring, short circuits, or improper electrical modifications can generate excessive heat, leading to a fire. Regular electrical system inspection and maintenance can help identify and address potential issues.

To mitigate the risk of a boat battery catching fire, here are some preventive measures:

Regularly inspect and maintain batteries, ensuring that terminals are clean and connections are tight.

Follow manufacturer guidelines for battery installation, including proper ventilation and securing the battery in a stable location.

Use the appropriate type and battery rating for your boat’s electrical system.
Avoid overloading the electrical system by not connecting excessive devices or appliances.

Use compatible and properly rated battery chargers; never leave batteries unattended during charging.

Maintain and inspect the entire electrical system regularly, addressing any signs of wear, corrosion, or damage.

Educate yourself and others onboard about safe battery handling and charging procedures.

If you notice any signs of battery malfunction, such as unusual heat, swelling, leaking, or a strong odor, it is essential to address the issue promptly.

Disconnect the battery, consult a professional for guidance, and replace the battery if necessary.

Can Salt Water Put Out Boat Fire?

The short answer is yes; salt water can be used to extinguish a boat fire. However, it’s not as simple as just pouring water on the flames.

A few things to consider before attempting to use salt water to put out a boat fire.

One important thing to remember is that saltwater can cause damage to the boat’s electrical system and other equipment.

The salt in the water can corrode metal components and cause permanent damage. Additionally, salt water can also cause damage to the boat’s interior and upholstery.

Another thing to consider is the effectiveness of salt water in putting out a fire. While salt water can be used to extinguish a fire, it may not be as effective as other fire suppression methods, such as dry chemical or foam extinguishers.

In some cases, salt water may only be able to control the fire rather than fully extinguishing it.

How Do You Prevent Fires On A Boat?

Preventing fires on a boat is crucial for the safety of everyone onboard. Here are some preventive measures you can take:

Regular Maintenance: Ensure your boat is properly maintained and serviced. Regularly inspect the electrical system, including wiring, connections, and battery terminals. Address any issues promptly.

Electrical Safety: Use marine-grade wiring and electrical components. Avoid overloading circuits and use circuit breakers or fuses to protect the system.

Safely store and handle batteries, ensuring they are securely mounted, and connections are tight.

Fuel System Safety: Inspect fuel lines, fittings, and connections for leaks. Ensure proper ventilation in the engine compartment and bilges to prevent the buildup of fuel vapors.

Use proper fueling practices, such as using spill-proof nozzles and avoiding overfilling the fuel tank.

Fire Extinguishers: Have appropriate fire extinguishers onboard and ensure they are easily accessible. Inspect and maintain extinguishers according to manufacturer guidelines. Learn how to use them effectively.

Smoking Safety: Establish a strict no-smoking policy on the boat. Discard cigarette butts in designated ashtrays or secure containers. Educate passengers about the risks and enforce the policy.

Cooking and Heating Safety: Use caution when cooking onboard. Follow manufacturer instructions for stoves and grills, and never leave them unattended.

Keep flammable materials away from heat sources. Install carbon monoxide detectors if you have onboard heating systems.

Flammable Materials Storage: Store flammable substances, such as fuel, propane, and chemicals, in designated and well-ventilated areas away from ignition sources. Securely seal containers and follow safety guidelines for storage.

Fire Safety Equipment: If possible, equip your boat with smoke detectors, carbon monoxide detectors, and fire suppression systems.

Ensure that all passengers know the location and operation of safety equipment.

Education and Preparedness: Familiarize yourself and your passengers with basic fire safety procedures.

Develop and practice an emergency plan, including evacuation procedures and communication methods.

Monitoring and Vigilance: Look for any signs of potential fire hazards, such as unusual smells, smoke, or electrical issues.

Be aware of weather conditions that can increase fire risks, such as high winds or dry conditions.

Remember, prevention is key, but in the event of a fire, prioritize the safety of all passengers.

If a fire occurs, follow emergency procedures, notify the appropriate authorities immediately, and evacuate the boat safely.


Fiberglass boats are not highly flammable due to the non-combustible nature of the fiberglass material.

However, it is important to recognize that other components on a boat, such as upholstery, wiring, and fuel sources, can still contribute to the fire risk.

Practicing proper fire safety measures, regular maintenance, and having the appropriate fire safety equipment on board are crucial for minimizing fire hazards and ensuring the safety of everyone on the boat.

While fiberglass provides inherent fire resistance, it is essential to remain vigilant and take necessary precautions to prevent fires and promote boating safety.