Mandatory Signs

Construction Mandatory Signs provide clear instructions about actions that must be followed on construction sites and temporary work areas. Also known as mandatory safety signs, PPE requirement signs or site instruction signs, they help ensure workers, contractors and visitors understand the safety precautions required before entering hazardous environments.

Commonly used by principal contractors, developers, construction companies, facilities managers and local authorities, mandatory signs reinforce essential safety procedures and support effective site management.

Typical installation locations include site entrances, welfare facilities, access routes, plant areas, scaffolding zones, loading bays and operational work areas where specific safety measures must be followed.

Manufactured in the UK and available in durable materials suitable for indoor and outdoor use, construction mandatory signs help create safer workplaces by communicating important safety instructions clearly and consistently.

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There are 63 products.

Warning Construction Site Keep Out Sign

Clearly warns people of a construction site and instructs them to keep out, helping prevent unauthorised access to hazardous work areas.
• 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 Aluminium Composite (3mm), Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl and Recyclable Correx ® (4mm)
• Helps reinforce restricted access controls and reduce entry into hazardous work areas

£6.86

Confined Space Permit To Work Required Sign

Clearly instructs people that a permit to work is required before entering a confined space, helping reinforce controlled entry and safety procedures.
• Instructs that a permit to work is required before entering confined spaces
• Suitable for industrial sites, tanks, tunnels and restricted access areas
• Clear white text and symbol on a blue background provide excellent visibility
• 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 reinforce safety procedures and prevent unauthorised confined space access

£2.71

Sound Horn Drive Slowly Sign

Instructs drivers to sound their horn and reduce speed in designated areas, helping improve vehicle safety and awareness.
• Instructs drivers to sound their horn and drive slowly in designated areas
• Suitable for construction sites, industrial yards, warehouses and blind corners
• Bold blue and white design with a clear horn symbol provides excellent visibility
• 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 accidents and improve safety in high-risk vehicle movement areas

£2.71

Danger Demolition In Progress Keep Out Sign

Clearly warns people that demolition is in progress and instructs them to keep out of hazardous work areas.
• Warns of active demolition work and restricts access to dangerous areas
• Suitable for construction sites, demolition zones, restricted work areas and industrial premises
• High-visibility 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 Recyclable Correx ® (4mm)
• Helps reinforce site access controls and reduce entry into hazardous demolition areas

£6.86

Now Wash Your Hands Sign

Clearly instructs people to wash their hands to support good hygiene standards and help reduce the spread of germs.
• Instructs people to wash their hands thoroughly
• Suitable for washrooms, kitchens, healthcare facilities and workplaces
• Bold blue mandatory design with a clear hand washing symbol provides quick 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 reinforce hand washing procedures and maintain good hygiene practices

£2.41

Keep Clear Sign

Clearly instructs people to keep designated areas free from obstructions, helping maintain safe and unrestricted access.
• Instructs individuals to keep designated areas clear at all times
• Suitable for workplaces, construction sites, entrances and access routes
• Bold white text and symbol on a blue background provide excellent visibility
• 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 workplace safety and maintain unrestricted access

£2.71

All Visitors And Drivers Must Report To Site Office mandatory safety sign

All Visitors And Drivers Must Report To Site Office Sign

Clearly instruct all visitors and drivers to report to the site office before entry with this highly visible mandatory safety sign.
• Instructs all visitors and drivers to report to the site office before accessing the premises
• Suitable for construction sites, industrial premises, warehouses, and commercial entrances
• Bold blue and white design ensures excellent visibility and readability
• Manufactured from durable Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl, and Recyclable Correx ® (4mm) materials
• Helps improve visitor control, site security, and workplace compliance procedures

£10.20

This Area Must Be Kept Clear At all Times Sign

Clearly instructs people to keep the designated area free from obstructions at all times, helping maintain safe access and movement.
• Instructs individuals to keep the area clear at all times
• Suitable for workplaces, warehouses, public buildings and access routes
• Bold white text and symbol on a blue background provide excellent visibility
• 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 support safe movement, access compliance and emergency procedures

£2.71

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

£10.20

All Visitors And Drivers Must Report To Reception mandatory safety sign

All Visitors And Drivers Must Report To Reception Sign

Ensure visitor reporting procedures are followed with this highly visible All Visitors And Drivers Must Report To Reception sign.
• Instructs all visitors and drivers to report to reception upon arrival
• Ideal for offices, commercial buildings, warehouses, and industrial premises
• Bold blue and white design ensures excellent visibility and readability
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm), Self Adhesive Vinyl, and Recyclable Correx ® (4mm)
• Helps improve visitor management, site security, and access control compliance

£10.20

All Visitors And Drivers Must Report To Site Office mandatory sign

All Visitors And Drivers Must Report To Site Office Sign

Clearly instructs all visitors and drivers to report to the site office on arrival to support site security and safety procedures.
• Instructs visitors and drivers to report to the site office
• Suitable for construction sites, industrial premises and secure work areas
• Clear blue and white design provides strong visibility and easy understanding
• Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Helps support site security, visitor tracking and safety compliance

£8.10

This Entrance Must Be Kept Clear Of All Obstructions Sign

Clearly instructs people to keep the entrance free from all obstructions, helping maintain safe and unobstructed access.
• Instructs individuals to keep entrances clear of all obstructions
• Suitable for workplaces, public buildings, warehouses and access points
• Bold white text and symbol on a blue background provide excellent visibility
• 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 safe access routes and emergency egress

£4.88

Showing 1-12 of 63 item(s)

Construction Mandatory Signs Guide

Construction Mandatory Signs communicate actions that must be carried out to maintain a safe working environment. Using recognised blue mandatory sign symbols, these signs provide clear instructions that help workers, contractors and visitors comply with site safety requirements.

From PPE requirements and pedestrian routes to hearing protection and safety footwear instructions, mandatory signs are a fundamental part of construction site safety communication and risk management.

Where Are Construction Mandatory Signs Used?

Construction site entrances
Welfare facilities and site cabins
Plant and machinery operating areas
Scaffolding and elevated work zones
Loading and delivery areas
Hazardous work environments
Pedestrian access routes
Temporary contractor workspaces

Types Of Construction Mandatory Signs

Wear Safety Helmet Signs
Wear High Visibility Clothing Signs
Safety Footwear Must Be Worn Signs
Eye Protection Must Be Worn Signs/a>
Hearing Protection Must Be Worn Signs
Wear PPE Signs

Available Materials

Self-Adhesive Vinyl

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

Rigid Plastic

Durable and suitable for most construction site and workplace environments.

Aluminium Composite (3mm)

Provides long-term durability and weather resistance for outdoor installations.

Recyclable Correx ® (4mm)

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

Related Core Safety Signs Categories

Safety Advice & Guides

Frequently Asked Questions

What are construction mandatory signs?

Construction mandatory signs display actions that must be followed on site, such as wearing PPE or following designated pedestrian routes.

What colour are mandatory signs?

Mandatory signs use a blue circular background with a white symbol or instruction to indicate required actions.

Where should construction mandatory signs be installed?

They should be placed wherever workers or visitors need to follow specific safety instructions, including entrances, work zones and hazardous areas.

What PPE signs are commonly used on construction sites?

Common examples include wear safety helmet, wear high visibility clothing, safety footwear must be worn, eye protection must be worn and hearing protection must be worn signs.

Why are mandatory signs important?

They help communicate essential safety requirements clearly, reducing risks and supporting safe working practices throughout a project.

Can mandatory signs be used outdoors?

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

Can I order custom mandatory signs?

Yes. Rainbow Safety can manufacture bespoke mandatory signs featuring custom wording, symbols and project-specific instructions.

Are Rainbow Safety mandatory signs manufactured in the UK?

Yes. Rainbow Safety manufactures a wide range of construction mandatory 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 mandatory signs manufactured to order
Large range of construction and workplace safety signs
Trusted by UK contractors, developers and local authorities
Expert support from an experienced safety signage team