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 Moreexpand_more
 Show Lessexpand_less
Warning deep excavations safety sign with hazard symbol
Warning Deep Excavations Sign
Warns of deep excavation hazards to prevent accidents and ensure site safety
• Alerts workers and visitors to the presence of deep excavation risks
• Ideal for construction sites, civil engineering projects, and groundwork areas
• Bold black text on yellow background ensures high visibility
• Available in Rigid Plastic (1mm) and Self Adhesive Vinyl
• Helps reduce risk of falls and supports safer working environments
£4.07
Details View details  
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
Details View details  
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
£9.01
Details View details  
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
Details View details  
Warning Site Entrance safety sign with yellow warning symbol
Warning Site Entrance Sign

Warn individuals of potential hazards when entering a site with this Warning Site Entrance Sign.
• Alerts people to hazards at site entry points
• Ideal for construction sites, industrial areas and work zones
• High-visibility yellow and black design ensures clear recognition and readability
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps improve site safety awareness and supports compliance with workplace safety requirements
£6.75
Details View details  
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
£9.01
Details View details  
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
£9.01
Details View details  
Warning Mud On Road Sign
Warning Mud On Road Sign
Warning Mud On Road Sign helps alert drivers, workers and visitors to mud hazards on road surfaces.
• Warns of mud on the road to reduce accident risk
• Used on construction sites, farm entrances and site access roads
• Clear yellow warning design with bold black text and symbol
• Available in Rigid Plastic (1mm) and Self Adhesive Vinyl
• Helps maintain safer vehicle movement around muddy areas
£12.31
Details View details  
Warning To Public safety sign for private property and construction site entrances
Warning To Public Sign

Warn the public that a site is private property and unauthorised access is prohibited with this highly visible warning sign.
• Prevents unauthorised entry and trespassing
• Ideal for building sites, construction areas and private land
• 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 liability and reinforces site safety rules
£9.01
Details View details  
Danger keep out sign with hazard warning and restricted access symbols
Danger Keep Out Sign
Danger keep out sign designed to warn individuals of hazardous areas and prevent unauthorised access to restricted locations.
• Helps communicate dangerous conditions and instructs individuals to keep out of restricted areas
• Suitable for construction sites, industrial facilities, secure zones, and hazardous work environments
• Bold warning colours and clear symbols ensure strong visibility and quick understanding
• Manufactured from Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl, and Recyclable Correx ® (4mm)
• Supports improved site safety awareness and helps reduce the risk of unauthorised entry
£8.50
Details View details  
Warning Construction Site Keep Out Sign with yellow warning and blue keep out symbols
Warning Construction Site Keep Out Sign - BS 5499 Compliant

Clearly warns people to keep out of construction areas, helping prevent unauthorised access and improve site safety.
• Warns people of a construction site and instructs them to keep out
• Suitable for construction sites, renovation projects, perimeter fencing and work areas
• High-contrast colours, bold text and clear symbols provide quick 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 4mm Recyclable Correx ®
• Helps reinforce restricted access controls and reduce entry into hazardous work areas
£5.72
Details View details  

Site Safety Signs Guide

Site Safety Signs are designed to communicate important health and safety information across construction sites, maintenance projects and temporary work environments. They help identify hazards, display mandatory instructions, restrict unsafe activities and provide guidance to workers, contractors and visitors.

Clear and visible site signage helps improve safety awareness, reduce risks and create a more organised workplace where everyone understands site rules and safety requirements.

Where Are Site Safety Signs Used?

  • Construction site entrances
  • Perimeter fencing and hoardings
  • Scaffolding and elevated work areas
  • Plant and machinery operating zones
  • Loading bays and delivery points
  • Welfare facilities and site cabins
  • Temporary contractor work areas
  • Infrastructure and civil engineering projects

Available Materials

Self-Adhesive Vinyl

Ideal for smooth indoor surfaces including site cabins, offices and welfare facilities.

Rigid Plastic

Durable and suitable for most construction and workplace environments.

Aluminium Composite (3mm)

Provides excellent weather resistance and long-term outdoor durability.

Recyclable Correx ® (4mm)

Correx is lightweight and ideal for temporary signage. Can be recycled via many kerbside programs.

Frequently Asked Questions

What are site safety signs?

Site safety signs communicate hazards, instructions, restrictions and emergency information to help keep construction sites and work areas safe.

Why are site safety signs important?

They help workers, visitors and contractors understand site hazards and safety requirements, reducing risks and improving safety awareness.

What types of site safety signs are available?

Common categories include warning signs, mandatory signs, prohibition signs, PPE signs, site rules signs and multi-message safety signs.

Where should site safety signs be installed?

They should be positioned at site entrances, hazardous areas, access routes, welfare facilities and locations where important safety information needs to be communicated.

Are site safety signs required on construction sites?

Safety signage should be used wherever hazards, restrictions or safety instructions need to be communicated clearly to workers and visitors.

Can site safety signs be used outdoors?

Yes. Rigid plastic, aluminium and correx signs are suitable for outdoor construction environments.

Can I order custom site safety signs?

Yes. Rainbow Safety can manufacture bespoke site safety signs featuring custom wording, logos and site-specific information.

Are Rainbow Safety site safety signs manufactured in the UK?

Yes. Rainbow Safety manufactures a wide range of construction and workplace safety signs in the UK for quality, consistency and fast dispatch.

Why Buy From Rainbow Safety?

  • Manufactured in the UK
  • Over 30 years of construction safety signage expertise
  • Fast dispatch on standard products
  • Trade discounts available
  • Custom site safety signs manufactured to order
  • Large range of construction and workplace signage
  • Trusted by UK contractors, developers and local authorities
  • Expert support from an experienced safety signage team