Warning Signs

Construction Warning Signs alert workers, contractors, visitors and members of the public to potential hazards commonly found on building sites and temporary work areas. Also known as site warning signs, hazard warning signs or construction hazard signs, they play a vital role in reducing risk and improving site safety.

Widely used by contractors, developers, principal contractors, local authorities and facilities managers, these signs help identify dangers such as moving vehicles, excavations, overhead work, hazardous substances and restricted access areas.

Typical installation locations include site entrances, perimeter fencing, hoardings, access routes, excavation zones, loading areas, scaffolding locations and high-risk work areas.

Manufactured in the UK and available in durable materials suitable for indoor and outdoor use, construction warning signs provide clear visual communication to help maintain safe and compliant construction environments.

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Danger Asbestos Keep Out safety sign with warning and mandatory symbols

Danger Asbestos Keep Out Sign

Warn staff, contractors and visitors of asbestos hazards and restrict access with this highly visible danger and mandatory safety sign.
• Clearly warns of asbestos hazards and restricted access requirements
• Ideal for construction sites, demolition areas and hazardous zones
• High-visibility yellow, black and blue design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back), Self Adhesive Vinyl and Recyclable Correx® (4mm)
• Helps prevent exposure to hazardous asbestos fibres and improves site safety compliance
£6.86
Danger Asbestos Zone Respirator Must Be Worn safety sign with warning and mandatory PPE symbols

Danger Asbestos Zone Respirator Must Be Worn Sign

Ensure mandatory respiratory protection in hazardous asbestos areas with this highly visible danger and mandatory safety sign.
• Instructs personnel to wear respirators in asbestos zones
• Ideal for construction sites, demolition areas and contaminated environments
• High-visibility yellow, black and blue design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps maintain safety compliance and reduce exposure to hazardous asbestos fibres
£6.86
Danger Asbestos Dust landscape safety sign with warning symbol

Danger Asbestos Dust Sign - Landscape

Warn staff, contractors and visitors of hazardous asbestos dust with this highly visible danger safety sign.
• Clearly alerts people to dangerous airborne asbestos dust
• Ideal for construction sites, demolition areas and industrial workplaces
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps minimise health risks by reinforcing awareness of asbestos dust hazards
£1.82
Danger Asbestos Keep Out safety sign with warning symbol and restricted access message

Pack of 6 Danger Asbestos Keep Out Signs

Warns individuals of asbestos hazards and restricts access to dangerous areas.
• Prevents unauthorised entry where asbestos is present
• Ideal for construction sites, refurbishment areas, and restricted zones
• High-contrast colours and bold symbols ensure clear visibility
• Manufactured using durable Recyclable Correx (4mm)
• Helps maintain safety and controlled access in hazardous environments
£37.02
Danger Explosive Atmosphere EX ATEX Category 1 safety sign with recognised EX hazard symbol

Danger Explosive Atmosphere Sign - EX Atex Category 1

Warn staff and visitors of explosive atmosphere hazards in ATEX Category 1 areas with this highly visible danger safety sign.
• Alerts individuals to the presence of a potentially explosive atmosphere
• Ideal for hazardous zones, industrial sites, refineries and chemical plants
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps improve awareness of explosive atmosphere risks and supports safe working practices
£2.71
Danger Explosive Atmosphere EX ATEX Category 3 safety sign with recognised EX hazard symbol

Danger Explosive Atmosphere Sign - EX Atex Category 3

Warn staff and visitors of explosive atmosphere hazards in ATEX Category 3 areas with this highly visible danger safety sign.
• Alerts personnel to explosive atmosphere hazards
• Suitable for industrial sites, refineries and hazardous zones
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic 1mm (Self Adhesive Back), Rigid Plastic (2mm), Rigid Plastic 2mm (Self Adhesive Back) and Self Adhesive Vinyl
• Helps reduce risk and improve workplace safety compliance
£2.71
Pack of 6 danger keep out warning signs for hazardous restricted areas

Pack of 6 Danger Keep Out Signs

Pack of 6 danger keep out signs designed to warn of hazardous areas and prevent unauthorised access.
• Helps communicate danger warnings and restrict entry to hazardous or restricted areas
• Suitable for construction sites, industrial facilities, warehouses, and restricted zones
• High-contrast colours and bold text ensure excellent visibility and quick recognition
• Manufactured from Rigid Plastic (1mm) for durable long-lasting performance
• Supports improved workplace safety and helps reduce accident and liability risks
£53.09
Pack of 6 Danger People At Work safety signs with yellow warning symbol

Pack of 6 Danger People At Work Signs

Clearly warn workers and visitors that people are working in the area with this Pack of 6 Danger People At Work Signs.
• Warns that people are working in the area
• Ideal for construction sites, maintenance zones, industrial sites and work areas
• High-visibility yellow and black design ensures excellent recognition
• Available in Rigid Plastic (1mm)
• Supplied as a pack of 6 for consistent safety signage across site
£53.09
Caution wet paint safety sign with paintbrush symbol

Caution Wet Paint Sign

Warns individuals of freshly painted surfaces to prevent contact and potential damage
• Alerts people to avoid contact with wet paint surfaces
• Ideal for maintenance areas, public spaces, and construction sites
• Bright yellow background with clear text ensures high visibility
• Available in Rigid Plastic (1mm) and Self Adhesive Vinyl
• Helps prevent smudging, damage, and accidental contact
£2.71
Danger Keep Out safety sign with warning and mandatory symbols

Danger Keep Out Sign

Warn individuals to stay out of hazardous or restricted areas with this Danger Keep Out Sign.
• Clearly communicates danger and restricted access requirements
• Ideal for construction sites, industrial areas and restricted zones
• Bold colours and recognised safety symbols provide excellent visibility and instant recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps maintain workplace safety, security and prevent unauthorised access
£7.14
Danger Scaffolding Incomplete warning safety sign with scaffolding hazard symbol

Danger Scaffolding Incomplete Sign

Warn people of incomplete scaffolding and potential fall hazards with this Danger Scaffolding Incomplete Sign.
• Clearly alerts workers and visitors to unsafe incomplete scaffolding
• Suitable for construction sites, maintenance areas and building works
• High-visibility yellow and black design ensures instant recognition and readability
• Available in Rigid Plastic (1mm) and Rigid Plastic (2mm)
• Helps prevent accidents by restricting access to unsafe scaffolding structures
£8.19
Danger High Voltage Cables Underground warning safety sign with electrical hazard symbol

Danger High Voltage Cables Underground Sign

Warn workers and the public of buried high voltage electrical cables with this Danger High Voltage Cables Underground Sign.
• Clearly warns of underground high voltage cable hazards to help prevent accidental contact
• Ideal for construction sites, excavation areas and industrial zones
• High-contrast yellow and black design ensures maximum visibility and instant recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps reduce the risk of electrical accidents and supports safer excavation practices
£7.14