Construction Site Signs45 products
Construction site signs warn workers and the public about the hazards on a live building site, and are made for principal contractors, site managers and builders who need clear danger, warning and keep out messages. Choose from 45 designs covering fragile roofs, deep excavations, overhead work, PPE, permits and unauthorised access. Each sign is printed full colour in A3, A2 or A1 landscape on 3.5mm Correx, 3mm Foamex or 3mm Dibond aluminium composite, and where a matching ISO 7010 symbol exists its code is shown on the product page.
Danger Men Working Below Sign
Warning Unauthorised Lift Machine Access Forbidden Sign
Unauthorised Entry Is Strictly Prohibited Sign
Keep Out Sign
Caution Dangerous Site Keep Out Sign
Warning Construction Site No Trespassing Sign
PPE Must Be Worn Sign
Dangerous Site Children Must Not Play Sign
Danger Construction Site No Unauthorised Access Sign
Danger Construction Site No Trespassing Sign
Unauthorised Entry to This Site Sign
No Hat No Boots No Job Sign
Permit to Work Must Be Obtained Sign
No Admittance Without PPE Sign
No Admittance Without a Work Permit Sign
Private Property No Unauthorised Access Sign
Construction Site No Pedestrian Entry Sign
Private Property Keep Out Sign
Private Property No Trespassers Sign
No Children Allowed on This Site Sign
Caution Concealed Entrance Sign
Construction Site Signs: questions answered
What do the colours on construction site signs mean?
Yellow triangles with a black border are warning signs for a hazard. Red circles with a diagonal bar are prohibition signs for something you must not do. Blue circles are mandatory signs for something you must do, such as wearing a helmet. Green signs show the way to safety or first aid.
What size construction site sign do I need?
Work from the distance people will read it from. An A3 landscape sign reads at about 12 metres, A2 at about 17 metres and A1 at about 24 metres. Site gates and fence lines usually need A1, while doors, ladders and roof access points can take A3.
Which signs does a construction site need?
Your risk assessment tells you. Common examples are access signs such as Keep Out or No Unauthorised Entry at the boundary, PPE signs at the gate, and hazard signs where specific risks remain, for example fragile roofs, excavations or work overhead.
What does the ISO 7010 code on a sign mean?
ISO 7010 is the international standard for safety sign symbols. The letter shows the type, such as W for warning, P for prohibition and M for mandatory, and the number identifies the symbol. W008, for example, is the drop or fall symbol used on our fragile roof and excavation signs.
Are these signs suitable for outdoor use?
Yes, in Correx or Dibond. 3.5mm Correx is waterproof and light, which suits signs that move as the build progresses. 3mm Dibond aluminium composite stays flat outdoors on long projects. 3mm Foamex is better kept for cabins, welfare units and indoor areas.
Guides for site, traffic & hoarding signs
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How solid PVC, mesh and PVC-free banners differ, and which to choose for fences, shop fronts, scaffolding and exposed sites.
Read the guideBuying guideSafety sign colours, shapes and ISO 7010 explained
What each safety sign colour and shape means, what ISO 7010 codes are, what the law expects, and how to choose the right size.
Read the guideBuying guideFoamex vs Dibond vs Correx: choosing a sign board
The three most common sign boards compared, and which to choose for indoor, long-term outdoor and temporary signs.
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