Warning - Construction Site - Keep Out - Safety Signs by Caledonia Signs

Alert people that they are approaching a hazardous construction zone and that unauthorized entry is strictly prohibited. Construction sites present numerous risks, including moving machinery, falling materials, uneven ground, open excavations, and other dangers that may not be immediately visible to someone unfamiliar with the work area. The sign’s message combines a hazard alert with a clear instruction to stay away unless properly authorized and equipped.

This sign should be positioned at all site entrances, access gates, and perimeter fencing, as well as at any informal entry points that might tempt pedestrians to enter. In high-traffic areas, multiple signs may be necessary to ensure visibility from all approaches. For large or multi-stage projects, signs can also be placed near specific high-risk zones within the site to reinforce the restriction.

The primary purpose of using this sign is to protect both the public and workers from accidents and injuries. Unauthorized individuals may not be aware of site safety protocols or the dangers present, and even a brief entry could put them at risk of serious harm. In addition, most workplace safety regulations require that active construction sites be clearly marked with warning signage to comply with legal standards.

For maximum effectiveness, the sign should be weather-resistant, highly visible, and large enough to be seen from a safe distance. It should be paired with physical security measures such as locked gates, fencing, and site surveillance. Together, these precautions ensure that the public is warned clearly and that only trained, authorized personnel have access to the construction area.

Materials Explained

Below is a more detailed description of the materials this particular safety sign is available in. Helping you decide which sign option is most suitable for your application.

Rigid Plastic: This lightweight, gloss white PVC is resistant to weather, moisture, chemicals, and general wear and tear, making it suitable for harsh environments. Its smooth, solid surface allows for crisp printing of text and graphics, enhancing readability and visual impact. Businesses who choose Rigid Plastic signs benefit from fewer replacements and minimal maintenance, making it a practical investment for reliable and effective safety signs.

Self-Adhesive Vinyl: Self-adhesive vinyl is easy to apply and it’s budget-friendly. Its adhesive backing allows for easy application to a variety of surfaces such as glass, metal, plastic, and painted walls, which simplifies installation and reduces setup time. Self-adhesive vinyl provides a clean, professional finish that suits many indoor environments including offices, retail, industrial sites, and vehicles. It is more affordable than many other material types and allows for custom shapes, colours, and graphics.

2mm PET: An excellent material for signage due to its high durability, impact resistance, and optical clarity. It performs well in both indoor and outdoor environments, offering strong resistance to moisture, chemicals, and UV exposure. This makes it ideal for high-traffic areas or locations where hygiene and visibility are crucial. Additionally, PET is lightweight, easy to handle, and fully recyclable, making it an environmentally friendly choice for modern signage solutions.

Rigid Plastic with Self Adhesive Backing: Our standard rigid plastic is a gloss white, smooth, solid material that allows for crisp printing of text and graphics - resistant to weather, moisture, chemicals. A strong peel & stick adhesive backing eliminates the need for tools or hardware, providing a long-lasting bond to most smooth surfaces, saving time and labour costs.

PVC Banner: Our 440GSM PVC banner material is durable, versatile, and cost-efficient. It is resistant to water, flames, rays, and general wear and tear, making it perfect for long-term outdoor use. It supports high-resolution printing, allowing vibrant, full-colour graphics and text. Suitable for a wide range of uses, including promotional banners, construction signage, and directional displays. It can also be finished with hems, eyelets, or sleeves to suit different mounting methods. PVC banners are easy to clean, they are also lightweight and can be rolled or folded, making them easy to transport and store between uses.

Fluted Polypropylene: A lightweight, cost-effective, and highly versatile material ideal for temporary signage. Its corrugated structure provides excellent rigidity and strength while remaining easy to handle and install. Resistant to water, chemicals, and UV exposure, it performs well in both indoor and outdoor environments. 100% recyclable, making it an environmentally conscious choice for short-term construction projects and events. Its smooth surface allows for high-quality print finishes, delivering clear and vibrant graphics at a low cost.