Danger - Fragile Roof - Strictly No Access - Safety Signs by Caledonia Signs

A critical safety measure used to warn people that a roof surface cannot safely support weight and must not be accessed under any circumstances. Fragile roofs can be made from materials such as asbestos cement sheets, old slates, brittle tiles, corrugated plastic, or glass panels that may look solid but can collapse without warning. The sign communicates an immediate risk of serious injury or death if the warning is ignored, making it an essential part of workplace safety in environments where roof work might be attempted.

These signs should be positioned wherever there is potential for someone to access a fragile roof, including roof hatches, fixed ladders, scaffolding leading to the roof, or at entrances to maintenance areas. They are especially important in industrial, agricultural, or warehouse settings, where older roof materials are more common and where contractors, inspectors, or workers may be present. The aim is to ensure that anyone approaching the area is clearly informed of the danger before they can step onto the hazardous surface.

The primary reason for using this sign is to prevent falls, which can be fatal from even moderate heights. In many regions, workplace safety laws, such as the UK’s Work at Height Regulations, require that fragile surfaces be clearly marked and that people be protected from the risk of falling through them. By combining a danger warning with a prohibition statement (“Strictly No Access”), the sign leaves no room for misinterpretation. It signals both the severity of the hazard and the fact that entry is forbidden, not merely discouraged.

To be effective, the sign should be placed in visible, strategic locations and made from durable, weather-resistant materials so it remains legible over time. It should be used alongside physical control measures such as guardrails, locked gates, or barriers to ensure the warning is backed by practical safety precautions. When installed correctly, the sign acts as both a legal safeguard and a life-saving reminder that fragile roofs are not safe to walk on under any circumstances.

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.

Rigid Plastic: This lightweight, gloss white PVC is resistant to weather, moisture, chemicals, and general wear and tear, making it suitable for harsh environments. Its smooth, solid surface allows for crisp printing of text and graphics, enhancing readability and visual impact. Businesses who choose Rigid Plastic signs benefit from fewer replacements and minimal maintenance, making it a practical investment for reliable and effective safety signs.

Self-Adhesive Vinyl: Self-adhesive vinyl is easy to apply and it’s budget-friendly. Its adhesive backing allows for easy application to a variety of surfaces such as glass, metal, plastic, and painted walls, which simplifies installation and reduces setup time. Self-adhesive vinyl provides a clean, professional finish that suits many indoor environments including offices, retail, industrial sites, and vehicles. It is more affordable than many other material types and allows for custom shapes, colours, and graphics.