Site Safety Signs & Construction Warning | Rainbow Safety

Site Safety Signs

Site Safety Signs help communicate hazards, safety instructions, access restrictions and emergency information on construction sites and temporary work areas. Also known as construction safety signs, contractor safety signs or site health and safety signs, they play a vital role in protecting workers, visitors and members of the public.

Used by construction companies, developers, principal contractors, facilities managers and local authorities, site safety signs provide clear visual guidance that supports safer working practices and effective site management.

Common installation locations include site entrances, perimeter fencing, hoardings, welfare facilities, access routes, scaffolding areas, loading bays and operational work zones.

Manufactured in the UK and available in a range of durable materials for indoor and outdoor use, Rainbow Safety site safety signs provide reliable safety communication for projects of all sizes.

Show More ▾ Show Less ▴
Warning Deep Excavations Sign

Warning Deep Excavations Sign

Warning Deep Excavations Sign clearly alerts workers and visitors to deep excavation hazards in designated work areas to help prevent accidents and improve site safety.
• Warns of deep excavations and helps reduce the risk of falls and related injuries.
• Ideal for construction sites, civil engineering projects, groundwork areas and excavation 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), Self Adhesive Vinyl and Recyclable Correx ® (4mm).
• Helps reinforce excavation hazard awareness and encourages safer working practices around open excavations.
£4.07
Danger Demolition In Progress warning safety sign with yellow and black hazard symbol

Danger Demolition In Progress Sign

Warn personnel and visitors of active demolition work with this Danger Demolition In Progress Sign.
• Warns that demolition work is currently in progress to help prevent unauthorised access
• Ideal for construction sites, demolition projects, refurbishment works and restricted access areas
• 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 site safety by clearly identifying hazardous demolition zones
£4.07
Warning Men Working Below Sign with yellow hazard symbol

Warning Men Working Below Sign


Alerts workers and visitors to personnel working below ground level or in excavated areas.
• Warns of people working below to help prevent accidents
• Suitable for excavations, basements, construction sites, access routes and work zones
• Bold yellow warning design with clear black text and hazard symbol
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm)
• Helps improve awareness around below-ground work areas
£8.50
Warning Men At Work safety sign with warning hazard symbol

Warning Men At Work Sign

Warn staff, visitors and the public of active work areas with this highly visible warning safety sign.
• Indicates active work zones to improve safety awareness
• Ideal for construction sites, industrial areas and maintenance zones
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps reduce accidents by warning people of ongoing work activities
£6.75
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
Warning Site Traffic safety sign with warning hazard symbol

Warning Site Traffic Sign

Warn staff, visitors and drivers of moving site traffic with this highly visible warning safety sign.
• Alerts people to the presence of moving site traffic
• Suitable for construction sites, industrial yards and loading areas
• High-visibility yellow and black design for clear recognition
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm)
• Helps reduce accidents by increasing awareness of vehicle movement
£8.50
Warning Construction Activities In Progress safety sign

Warning Construction Activities In Progress Sign


Alerts people to active construction work and helps reduce the risk of accidents in busy work areas.
• Warns staff, visitors and contractors that construction activities are taking place
• Suitable for construction sites, industrial facilities, workplaces and maintenance areas
• Bold yellow warning design with clear black text for strong visibility
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm)
• Helps promote awareness and safer movement around active work zones
£8.50
Warning Mud On Road Sign

Warning Mud On Road Sign

Warning Mud On Road Sign clearly alerts drivers, workers and visitors to muddy road surfaces and encourages caution around areas where vehicles may encounter mud hazards.
• Warns of mud on the road and helps reduce the risk of skidding, loss of traction and vehicle accidents.
• Ideal for construction sites, farm entrances, site access roads, rural routes and areas with frequent vehicle movements.
• High-visibility yellow background with bold black lettering and a recognised warning triangle provides clear recognition.
• Available in Rigid Plastic (1mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm).
• Helps improve driver awareness and encourages safer vehicle movement around muddy roads and site entrances.
£8.50
Warning To Public Sign

Warning To Public Sign


Warning To Public Sign clearly informs visitors and members of the public that a building site is private property, unauthorised entry is prohibited and parents should warn children of site dangers.
• Warns against unauthorised access, trespassing and playing on building sites.
• Ideal for construction sites, building projects, perimeter fencing, private property and restricted site entrances.
• High-visibility yellow background with bold black lettering provides clear recognition and readability.
• 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 access restrictions, parental awareness and safety precautions around hazardous building areas.
£8.50
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
Warning Construction Site Keep Out Sign with warning and mandatory safety symbols

Warning Construction Site Keep Out Sign


Warning Construction Site Keep Out Sign clearly warns people of construction hazards and instructs unauthorised individuals to stay out of designated work areas.
• Combines a construction site warning with a clear keep out instruction to discourage unauthorised access.
• Ideal for construction sites, renovation projects, perimeter fencing, site entrances and active work zones.
• High-contrast yellow warning and blue mandatory symbols with bold lettering 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 access restrictions and improve awareness of potentially hazardous construction areas.
£5.72