Home » Fire Safety and Foam Board: An In-depth Review

Fire Safety and Foam Board: An In-depth Review

Foam boards, commonly known as foam core boards, are incredibly versatile and popular materials used across numerous industries. From graphic arts and mounting photographs to creating architectural models, foam boards have proven to be invaluable. However, an aspect that often raises concern is their fire safety. Let’s delve deeper into understanding the fire safety of foam boards and ways to improve it.

Fire Safety

The Composition of Foam Boards

Foam boards consist of a foam centre, which is usually made from polystyrene or polyurethane, sandwiched between two layers of paper or plastic. While they are light, sturdy, and easy to work with, the foam within these boards is flammable. This intrinsic characteristic necessitates strict considerations regarding their use in various environments, particularly where fire risk is a significant concern.

Fire Risks Associated with Foam Boards

Polystyrene, the most common core material of foam boards, is inherently flammable. When exposed to an open flame, it melts and can drip, potentially spreading the fire further. Moreover, burning polystyrene releases toxic gases, including carbon monoxide and styrene gas, which pose serious health risks.

Fire Safety Ratings

In the UK, materials used in buildings must adhere to specific fire safety standards. These are assessed through a series of tests that determine how materials react to fire, including their ignitability, energy contribution, and the production of smoke and burning droplets. For foam boards, it is crucial to consult the fire safety rating of the product. A Class 1 rating, for instance, indicates a high level of fire resistance.

Enhancing Fire Safety with Foam Boards

While untreated foam boards are flammable, various treatments can improve their fire resistance. These treatments work by creating a protective barrier around the foam, which can either slow down the ignition process or create a self-extinguishing reaction when exposed to a flame.


For example, fire-retardant foam boards are treated with chemicals that reduce their flammability. This is not a foolproof solution, but it does significantly slow down the burning process, giving more time for fire-fighting measures to be implemented. Such boards are commonly used in public buildings and spaces with high foot traffic, where fire safety is paramount.


It is crucial, therefore, for buyers to ensure they are sourcing fire-retardant foam boards when required and to always check the fire safety ratings. To find out more about a specific product’s fire safety, it is advisable to consult with the manufacturer or supplier directly.

Proper Installation and Handling

Improving fire safety with foam boards extends beyond the purchase of fire-retardant variants. Proper installation and handling of these boards are just as essential. They should never be installed near open flames or high-temperature areas, such as near stoves or heaters. Proper storage is also crucial – they should be kept in a cool, dry place, away from direct sunlight and heat sources.

Disposal Considerations

Given their flammable nature, the disposal of foam boards requires care. They should not be burned, as this releases toxic fumes. Instead, they should be recycled where possible or disposed of in accordance with local regulations, which usually involve taking them to a designated disposal facility.


Foam boards are a popular choice due to their lightweight, easy-to-use nature and versatility. However, their inherent fire risks, primarily due to the polystyrene core, make fire safety a critical consideration. By opting for fire-retardant foam boards, adhering to proper installation and handling procedures, and responsibly disposing of these materials, the risks associated with their use can be significantly mitigated.


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