Warning Signs

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 Drop Below warning safety sign with fall hazard symbol

Danger Drop Below Warning Sign

Warn individuals of dangerous drop hazards with this Danger Drop Below Warning Sign.
• Alerts individuals to the risk of a drop below and potential fall hazards
• Suitable for construction sites, warehouses, elevated walkways, platforms and hazardous edges
• High-visibility yellow and black design provides excellent recognition and readability
• 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 around exposed edges and reduce the risk of falls
£2.26
Danger Fragile Roof warning safety sign with fragile roof hazard symbol

Danger Fragile Roof Sign

Warn personnel of roofing hazards with this Danger Fragile Roof Sign.
• Warns of fragile roof hazards to help prevent falls and serious injury
• Ideal for construction sites, industrial buildings, maintenance areas and roof access points
• High-visibility yellow and black design ensures clear recognition and readability
• 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 safety awareness and restrict access to hazardous roof areas
£4.07
Danger Keep Out Sign

Danger Keep Out Sign

Danger Keep Out Sign clearly warns workers and visitors of hazardous areas and instructs unauthorised individuals to stay out of restricted locations.
• Communicates potential danger and reinforces the instruction to keep out of hazardous areas.
• Ideal for construction sites, industrial premises, secure zones, restricted entrances and hazardous work areas.
• High-contrast yellow warning and blue instruction panels with bold lettering provide clear visibility.
• 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 reinforce restricted access procedures and improve safety awareness around potentially dangerous locations.
£5.72
Caution Change In Floor Level warning safety sign with yellow hazard symbol

Caution Change In Floor Level Warning Sign

Warn people of uneven or changing floor levels with this Caution Change In Floor Level Warning Sign.
• Alerts individuals to uneven or changing floor levels to help prevent trips and falls
• Suitable for workplaces, warehouses, offices, entrances and public buildings
• High-visibility yellow and black design ensures clear recognition and readability
• 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 trip hazards and improve overall workplace safety
£2.26
Warning Deep Water Sign

Warning Deep Water Sign

Warning Deep Water Sign clearly alerts workers, visitors and members of the public to deep water hazards and potential drowning risks near bodies of water.
• Warns individuals of deep water and helps reduce the risk of accidental falls and drowning.
• Ideal for lakes, rivers, docks, reservoirs, waterfront areas and waterside locations.
• High-visibility yellow and black design with a recognisable deep water hazard symbol provides clear recognition.
• Available in Aluminium Composite (3mm), Aluminium Composite With Fixing Channel (3mm), Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm).
• Helps reinforce water safety awareness and encourages greater caution around deep water hazards.
£8.50
Danger Asbestos Keep Out Sign

Danger Asbestos Keep Out Sign

Danger Asbestos Keep Out Sign clearly warns workers, contractors and visitors of asbestos hazards and instructs unauthorised individuals to stay out of restricted areas.
• Warns of asbestos hazards and reinforces keep out instructions to help prevent accidental exposure.
• Ideal for construction sites, demolition projects, refurbishment areas, industrial premises and asbestos work zones.
• High-contrast yellow warning and blue instruction panels with bold lettering provide clear visibility and 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 reinforce asbestos safety awareness and restricted access procedures around potentially hazardous areas.
£5.72
Danger Asbestos warning safety sign with yellow hazard symbol

Danger Asbestos Sign

Warn workers and visitors of hazardous asbestos materials with this Danger Asbestos Sign.
• Highlights the presence of dangerous asbestos materials
• Ideal for construction sites, demolition areas and older buildings
• Bold black text on a high-visibility yellow background ensures 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 health risks by clearly communicating asbestos hazards
£2.26
Danger High Voltage Cables Underground Electrical warning safety sign with electrical hazard symbol

Danger High Voltage Cables Underground Electrical Sign

Warn individuals of buried high voltage electrical cables with this Danger High Voltage Cables Underground Electrical Sign.
• Alerts individuals to underground high voltage cable hazards
• Ideal for construction sites, excavation areas and utility zones
• High-contrast yellow and black design ensures clear visibility and instant 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 the risk of serious injury, electrical accidents and excavation damage
£2.26
Danger Fragile Roof Site warning safety sign with fragile roof hazard symbol

Danger Fragile Roof Site Sign

Warn personnel of roofing hazards with this Danger Fragile Roof Site Sign.
• Warns of fragile roof hazards to help prevent falls through roof surfaces
• Ideal for construction sites, industrial buildings, maintenance areas and roof access points
• High-visibility yellow and black design ensures excellent recognition from a distance
• Available in Rigid Plastic (1mm)
• Helps improve roof safety awareness and reduce the risk of serious injury
£8.19
Warning Site Entrance safety sign with yellow warning symbol

Warning Site Entrance Sign

Warn drivers and pedestrians of site entrance hazards with this Warning Site Entrance Sign.
• Clearly alerts drivers and pedestrians to hazards at site entrance points
• Ideal for construction sites, building developments and work zones
• High-contrast yellow and black design provides excellent visibility and instant recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps reduce accidents by improving awareness at site entry points
£6.75
Warning Concealed Entrance safety sign with yellow warning symbol

Warning Concealed Entrance Sign


Warn people of hidden or concealed entrances with this Warning Concealed Entrance Sign.
• Alerts people to concealed entrance hazards that may not be immediately visible
• Suitable for construction sites, industrial areas and restricted access points
• Bold yellow and black design ensures maximum visibility and clarity
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl, and Recyclable Correx ® (4mm)
• Helps improve awareness of hidden entrances and reduce the risk of accidents
£8.50
Warning Site Entrance Sign

Warning Site Entrance Sign


Warning Site Entrance Sign clearly alerts workers, visitors and drivers to potential hazards at site entry points and helps improve workplace safety awareness.
• Warns individuals of potential hazards when approaching or entering designated work sites.
• Ideal for construction sites, industrial premises, site access gates, building projects and active work zones.
• Bold black lettering and a recognisable warning triangle on a yellow background provide clear visibility.
• Available in Aluminium Composite (3mm), Aluminium Composite With Fixing Channel (3mm), Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm).
• Helps reinforce site entrance hazard awareness and encourages workers, visitors and drivers to exercise caution.
£6.75