Temporary Warning Signs

Temporary Warning Signs are used to alert employees, contractors, visitors and members of the public to short-term hazards such as maintenance work, cleaning activities, construction works, repairs, spillages and restricted access areas.

Also known as temporary hazard signs, portable warning signs, site warning signs and temporary safety signs, they help communicate changing risks clearly and quickly in busy workplaces and public environments.

Temporary warning signage is widely used by facilities managers, contractors, cleaners, maintenance teams, warehouses, schools, hospitals, retail premises and construction sites. Common locations include entrances, walkways, corridors, loading bays, work areas and areas affected by temporary hazards.

Manufactured in the UK, our temporary warning signs are available in durable materials including self-adhesive vinyl, rigid plastic, aluminium and portable sign formats where suitable.

 Show Moreexpand_more
 Show Lessexpand_less
Caution Razor Wire warning sign with hazard symbol and razor wire text
Caution Razor Wire Sign
Caution Razor Wire Sign warns people of the presence of razor wire and helps reduce the risk of injury in restricted or protected areas.
• Purpose: Warns of potential injury from razor wire installations
• Where it is used: Suitable for perimeter fencing, security compounds, industrial sites, warehouses and restricted areas
• Visibility / clarity: High-contrast black text and warning symbol on a yellow background for clear hazard identification
• Material / durability: Available in Rigid Plastic (1mm) and Self Adhesive Vinyl
• Context-based benefit: Helps improve awareness of sharp security barriers and supports safer site access
£2.26
Details View details  
Caution Arc Welding warning sign with hazard symbol and arc welding text
Caution Arc Welding Sign
Caution Arc Welding Sign warns people of hazards associated with arc welding activities and helps maintain a safer working environment.
• Purpose: Warns of potential dangers from arc welding operations
• Where it is used: Suitable for workshops, fabrication areas, construction sites, factories and welding bays
• Visibility / clarity: High-contrast black text and symbol on a yellow warning background for clear recognition
• Material / durability: Available in Rigid Plastic (1mm) and Self Adhesive Vinyl
• Context-based benefit: Helps increase hazard awareness and supports safer workplace practices
£6.13
Details View details  
Danger warning sign with hazard symbol and danger text
Danger Sign
Danger Sign warns people of a serious hazard or dangerous condition and helps improve safety awareness in the workplace.
• Purpose: Warns of a significant hazard or dangerous situation
• Where it is used: Suitable for workplaces, industrial sites, construction areas, warehouses and restricted zones
• Visibility / clarity: High-contrast black text and warning symbol on a yellow background for immediate recognition
• Material / durability: Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Context-based benefit: Helps communicate danger clearly and supports safer site operations
£2.26
Details View details  
Danger Test Area sign with warning symbol and test area message
Danger Test Area Sign
Danger Test Area Sign warns people of hazards within a designated testing zone and helps prevent unauthorised access during testing activities.
• Purpose: Warns of potential dangers within a test area
• Where it is used: Suitable for laboratories, testing facilities, research centres, workshops and industrial sites
• Visibility / clarity: High-contrast black text and warning symbol on a yellow background for clear hazard communication
• Material / durability: Available in Rigid Plastic (1mm) and Self Adhesive Vinyl
• Context-based benefit: Helps keep personnel informed and promotes safer testing environments
£2.26
Details View details  
Warning Hazardous Area sign with warning symbol and hazardous area message
Warning Hazardous Area Sign
Warning Hazardous Area Sign alerts people to the presence of a hazardous area and helps improve awareness of potential risks within the workplace.
• Purpose: Warns of a hazardous area where dangers may be present
• Where it is used: Suitable for construction sites, industrial facilities, restricted zones, warehouses and manufacturing areas
• Visibility / clarity: High-contrast black text and warning symbol on a yellow background for immediate recognition
• Material / durability: Available in Rigid Plastic (1mm), Rigid Plastic (2mm) and Self Adhesive Vinyl
• Context-based benefit: Helps reduce the risk of accidents by clearly identifying hazardous locations
£2.26
Details View details  

Temporary Warning Signs Guide

Temporary Warning Signs are designed to alert people to hazards that may only exist for a limited period of time. They help warn about maintenance activities, cleaning work, construction operations, spillages, repairs, inspections and other short-term risks.

These signs form an important part of workplace safety management by helping organisations communicate changing hazards quickly, reduce accident risks and guide people safely around temporary work areas.

Where Are Temporary Warning Signs Used?

  • Construction and maintenance areas
  • Cleaning zones and wet floor areas
  • Warehouses and loading bays
  • Factories and production sites
  • Schools and public buildings
  • Hospitals and healthcare facilities
  • Retail stores and shopping centres
  • Walkways, entrances and corridors

Available Materials

Self-Adhesive Vinyl

Ideal for smooth internal surfaces where temporary hazard messages need to be clearly displayed.

Rigid Plastic

Durable, lightweight and suitable for most temporary workplace safety applications.

Frequently Asked Questions

What are temporary warning signs?

Temporary warning signs alert people to short-term hazards such as cleaning work, repairs, maintenance activities, construction work and spillages.

Where should temporary warning signs be displayed?

They should be positioned close to the temporary hazard, including entrances, walkways, work areas, cleaning zones and restricted access points.

Why are temporary warning signs important?

They help communicate changing risks quickly, reduce accident risks and guide people safely around temporary hazards.

Who uses temporary warning signs?

Contractors, cleaners, facilities managers, warehouses, schools, hospitals, retailers and construction teams commonly use temporary warning signage.

What colour are temporary warning signs?

Most temporary warning signs use a yellow background with black symbols and text to indicate a hazard.

Can temporary warning signs be used outdoors?

Yes. Aluminium and rigid plastic signs are suitable for outdoor areas, construction sites and temporary work zones.

Are portable warning signs suitable for cleaning areas?

Yes. Portable signs are ideal for wet floors, cleaning activities and temporary hazards that move throughout a building.

Do you offer custom temporary warning signs?

Yes. Rainbow Safety can manufacture bespoke temporary warning signs with custom wording, symbols and site-specific safety messages.

Why Buy From Rainbow Safety?

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