Highly Flammable Substance Symbol
The Highly Flammable sign is used to warn of substances or areas where materials can ignite very easily and pose a serious fire risk.
This sign highlights environments where even small ignition sources may lead to rapid fire spread, requiring heightened caution.
At Foamex Printing Company, we supply Highly Flammable sign options designed to present this warning using recognised layouts and high-contrast printing.
These signs help communicate elevated fire risk clearly in the workplace and shared environments where highly flammable substances may be present.
Types of Highly Flammable Hazard Signs
Different warning formats may be used to communicate high fire risk depending on the substances and environment involved.
- Highly Flammable Sign: Used to indicate substances that ignite extremely easily and require strict handling precautions.
- Highly Flammable Substance Symbol: Uses a recognised hazard pictogram to visually represent a heightened flammability risk.
- Flammable Liquid Sign: Where highly flammable liquids are present, a flammable liquid sign may also be displayed to highlight this specific hazard.
- Flammable Warning Signs: These can help communicate fire-related hazards clearly in workplaces, storage areas and other locations where flammable substances are present.
- Danger Flammable Sign: Provides a clear warning where flammable materials present an increased fire risk and additional caution is required.
In environments where highly flammable substances form part of broader chemical hazards, signage may also appear alongside a sign for dangerous chemicals to support consistent hazard communication.
Materials, Printing, and Finish Options for Highly Flammable Signs
Our Highly Flammable sign products are produced using rigid Foamex board, selected for its lightweight structure and clean finish. This material suits environments where warning signs need to remain visible and intact during everyday use.
The material performs well in both indoor and outdoor settings, helping maintain the appearance of the sign over time. High-contrast printing ensures the warning text and highly flammable substance symbol remain easy to see, allowing the hazard to be recognised quickly without additional explanation.
Available material, fixing, and finish options include:
- Self-adhesive backing or pre-drilled mounting holes
- Multiple standard-size options
- High-contrast printing for improved visibility
- Matt, gloss, or dry-wipe finishes
- Optional photoluminescent finish for low-light areas
- Layout adjustments depending on placement requirements
These options allow Highly Flammable sign formats to be adapted to different environments while keeping the warning consistent and recognisable.
Many organisations also consider general construction guidelines when deciding how flammable warning signage is displayed on active sites.
UK Compliance Requirements for Highly Flammable Signs
UK regulations require Highly Flammable signs to clearly communicate risks associated with substances that ignite easily in workplaces and public environments.
These signs must comply with UK health and safety legislation, including COSHH and CLP requirements where applicable, and use recognised colours, shapes, and pictograms to ensure hazards are easily understood. HSE guidance identifies the flammable pictogram as part of the recognised GB CLP hazard pictograms.
The Highly Flammable sign is used to identify substances or areas where there is a significant fire risk. For workplaces handling flammable liquids, HSE guidance recommends appropriate safety signs where significant risk remains after other control measures have been implemented.
With correct placement and visibility, flammable warning signs support immediate recognition and effective risk communication.
Why Choose Foamex Printing Company for Highly Flammable Signs
- Durable Foamex material: Highly flammable signs are produced using rigid Foamex board, providing a stable and well-finished base for everyday use.
- Professional print finish: High-contrast printing helps ensure the warning text and symbol remain easy to recognise and visually consistent.
- Bulk order options: Larger order quantities can be supplied where consistent safety signage is required across multiple areas.
- Practical pricing: Pricing is kept reasonable across standard Highly Flammable sign options without unnecessary additions.
- White-label shipping: Orders are supplied in plain, unbranded packaging to support discreet fulfilment where required.
Choose the Right Highly Flammable Sign
Choose the appropriate Highly Flammable sign for your requirements and select the size and finish that best suits its intended location.
Whether you need a flammable sign, flammable substance sign, flammable warning signs or a danger flammable sign, clear and durable signage helps communicate fire hazards effectively.



