Buy Construction Signs Online

Construction signs play a crucial role in site safety. They help reduce accidents, guide foot traffic, and meet legal obligations.

At SMI, we supply a wide range of durable, clearly printed signage designed for both indoor and outdoor use.

Whether you need warning signs, mandatory notices, or custom labels, you’ll find them in our construction signs category.

Take a look at our wider range of visual management products to create a fully compliant set-up.

Need help choosing the right signage? Get in touch with our friendly team.

64 results found

76MMX305M CAUTION

£ 73.39

76MMX305M CAUTION MEN AT WORK

£ 73.39

76MMX305M DANGER KEEP OUT

£ 73.39

VEHICLES AND CONTENTS ARE LEFT ENTIRELY AT OWNERS RISK

£ 14.59

ALL VEHICLES ENTERING OR LEAVING THIS SITE

£ 14.59

ALL VISITORS MUST REPORT TO SECURITY

£ 14.59

PRIVATE PROPERTY KEEP OUT

£ 14.59

BE AWARE THIS IS A SECURITY PATROLLED AREA

£ 14.59

BE AWARE 24 HOUR CCTV IN OPERATION

£ 14.59

BE AWARE THESE PREMISES ARE UNDER CONSTANT SURVEILANCE

£ 14.59

CLOSE THESE GATES AT NIGHT

£ 14.59

KEEP SITE ENTRANCE CLEAR

£ 14.59

ALL RUBBISH TO BE LEFT

£ 14.59

SAFETY EQUIPMENT MUST BE WORN ON SITE

£ 14.59

NO HARD HAT NO WORK

£ 14.59

PERSONAL PROTECTIVE EQUIPMENT MUST BE WORN

£ 14.59

SAFETY EQUIPMENT IS PROVIDED

£ 14.59

APPROVED PERSONAL

£ 14.59

DRIVERS PLEASE BE COURTEOUS

£ 14.59

CAUTION FALLING DEBRIS

£ 14.59

WARNING HEAVY PLANT AND MACHINERY OPERATING

£ 14.59

DANGER SCAFFOLDING INCOMPLETE

£ 14.59

DANGER MEN WORKING OVERHEAD

£ 14.59

DANGER DEMOLITION IN PROGRESS

£ 14.59

FAQs

Where to buy construction safety signs?

SMI makes it easy to stay compliant with site signage.

We stock:

Durable signs for indoor and outdoor use
Clear messages that meet UK safety standards
Multiple styles for hazard, warning, and general information signs

Explore our construction signs range for quick ordering and delivery.

What colour are construction zone signs?

Each sign colour has a specific safety meaning.

Common types include:

Red for prohibition messages (e.g., "No Entry")
Green for safety and exit routes (e.g., "Fire Exit")
Blue for mandatory actions (e.g., "Wear Helmet")
Yellow for warnings (e.g., "Caution: Deep Excavation")

These colours follow standard UK safety guidelines for fast visual recognition.

What are the mandatory signs on building sites?

Site managers are required to display signs that communicate essential safety rules.

These often include:

Entry restrictions for visitors or staff
Emergency exit and first aid locations
Fire safety signage, including extinguisher points
PPE notices for hard hats, hi-vis and safety boots

Visit our PPE section and signage category to make sure your site is fully covered.

What are the 5 types of safety signs in construction?

UK regulations define the five main types of safety signs used in construction.

These are:

Warning signs - yellow triangles with black icons
Prohibition signs - red circles with a diagonal line
Mandatory signs - blue circles with white symbols
Safe condition signs - green rectangles for emergency info
Fire safety signs - red rectangles showing equipment locations

To find the right signage for your site, browse our full signs and labels.