Warning Construction Site Keep Out Sign
Restrict unauthorised access and highlight construction hazards with this highly visible warning and mandatory safety sign.
• Prevents unauthorised entry to hazardous construction areas
• Ideal for building sites, development zones and restricted workspaces
• High-visibility yellow and blue design for clear recognition
• Available in Rigid Plastic (1mm) and Rigid Plastic (2mm)
• Helps maintain site safety and reinforce access restrictions
Product Overview
The Warning Construction Site Keep Out Sign combines a warning message with a mandatory instruction to clearly identify hazardous construction areas and prevent unauthorised access. Featuring bold yellow and blue safety colours with recognised safety symbols, it provides clear guidance to help protect workers, visitors and the public.
Where to Use
- Construction sites
- Building developments
- Restricted work areas
- Site entrances
- Temporary work zones
Key Features
- Clear construction site keep out message
- Combines warning and mandatory safety symbols
- High-visibility yellow and blue design
- Easy to recognise from a distance
- Helps prevent unauthorised access to hazardous areas
Materials & Options
- Rigid Plastic (1mm)
- Rigid Plastic (2mm)
Compliance
This sign supports compliance with UK health and safety regulations, including:
- Health and Safety at Work etc. Act 1974
- Safety Signs and Signals Regulations 1996
Frequently Asked Questions
Where should this sign be installed?
Install this sign at construction site entrances, perimeter fencing, restricted work areas and any location where unauthorised access must be prevented.
Is this sign suitable for outdoor use?
Suitability depends on the selected material. Choose the appropriate material option for your installation environment.
What does this sign indicate?
It warns that the area is an active construction site and instructs unauthorised persons to keep out for safety.
Trade Discounts
Rainbow Safety supplies safety signs to trade professionals across the UK.
Our trade customers include:
- Fire safety service companies
- Fire risk assessors and safety consultants
- Electrical wholesalers
- Facilities management companies
Approved trade customers receive:
- Preferential trade discounts
- Better margins for reselling safety signs
- Marketing support to help you sell more signs
- Access to our full range of safety signs
With the support and marketing tools provided, our sales have grown to over £3,000 per month.
Fire extinguisher servicing margins are not what they used to be, so supplying safety signs has become a valuable additional revenue stream for our business. On one warehouse safety survey alone we invoiced £5,100 on a single order.
We can now compete with internet prices and still make a healthy margin.
We were regularly asked to supply safety signs, but struggled to compete with internet prices while maintaining a worthwhile margin.
Working with Rainbow Safety has changed that. We can now offer our customers a competitive range of safety signs while still making a healthy margin for our business.
Loyalty Rewards
Rainbow Safety rewards regular customers across the UK who order safety signs on an ongoing basis.
- Schools and colleges
- Facilities management companies
- Contractors and maintenance teams
- Offices and commercial premises
- Preferential pricing for regular customers
- Free design service for custom safety signs
- Access to exclusive promotional offers
- Dedicated account manager if required
“Rainbow Safety has become our go-to supplier for safety signs.”
We regularly need safety signs for maintenance work, refurbishments and ongoing compliance updates. Since ordering from Rainbow Safety, the process has been straightforward, reliable and cost-effective.
The loyalty rewards and special offers have helped us save money across repeat orders, while the wide product range means we can usually source everything we need in one place.
Fast ordering, consistent quality and ongoing rewards have made Rainbow Safety a valuable supplier for our business.
Reviews
Very impressed with the durability and professional finish. The landscape layout makes the warning highly visible to both visitors and contractors.
The sign is well made and the print quality is excellent. I would have liked a few more fixing options, but it's a great product overall.
Excellent quality landscape sign with bold lettering that's easy to read from a distance. It's perfect for clearly marking our construction site entrance.



