No Naked Light Symbol (Roll of 100 Labels) - Safety Signs by Caledonia Signs

Used to indicate that open flames or sources of ignition—such as matches, lighters, candles, or even sparking tools—are strictly prohibited in a specific area. The symbol typically features a flame crossed out in red, making it immediately recognisable and easy to understand, even across language barriers. It plays a crucial role in preventing fire or explosion hazards, especially in environments where flammable or combustible substances are present.

These labels are commonly used in industrial settings, including fuel storage areas, chemical plants, refineries, and workshops where flammable gases, vapors, or dust may be present. They are also essential in laboratories, battery storage rooms, paint shops, or near gas cylinders—anywhere a spark could ignite volatile substances. The presence of this label warns workers, contractors, and visitors to avoid using tools or actions that could generate heat or flame.

The primary reason to use a "No Naked Light" label is to minimise the risk of fire or explosion, which can cause catastrophic damage to property, injury, or even loss of life. It also helps facilities comply with health and safety legislation, such as the UK’s Health and Safety (Safety Signs and Signals) Regulations 1996, or similar workplace safety codes in other regions. Clear signage ensures that everyone is aware of the potential risks and behaves accordingly.

These labels are typically placed at eye level on doors, walls, tanks, machinery, or entry points to controlled or hazardous zones. They are especially important at transition points—such as entrances to hazardous storage areas—where someone might unknowingly bring in a lighter or tool that creates sparks. Using standardised, clearly visible labels is a simple yet critical part of any workplace fire prevention strategy.

Materials Explained

Below is a more detailed description of the materials this particular safety sign is available in. Helping you decide which sign option is most suitable for your application.

Roll / Sheet of Labels: Manufactured from self-adhesive vinyl, our roll / sheets of labels are easy to apply and are budget-friendly. The adhesive backing on each label allows for easy application to a variety of surfaces making them ideal for high-volume tasks such as product packaging, shipping, inventory tagging, or compliance labelling.