There are several health and safety reasons to use hoardings, especially on construction sites. Here are a few:

1. Safety barrier: Hoardings can act as a safety barrier between the construction site and public access areas, preventing unauthorized entry and reducing the risk of accidents and injuries.
2. Dust and debris control: Construction sites can produce a lot of dust and debris, which can pose a risk to the health and safety of workers and the public. Hoardings can help to contain this dust and debris, keeping the surrounding areas clean and safe.
3. Noise reduction: Construction sites can be noisy, which can be a nuisance to the public and nearby residents. Hoardings can help to reduce noise pollution by providing a sound barrier.
4. Protection from weather: Hoardings can provide protection from the elements, such as wind, rain, and snow, which can create hazardous working conditions.
5. Security: Hoardings can help to prevent theft and vandalism by creating a physical barrier around the construction site.

Overall, using hoardings on construction sites can help to ensure a safe and secure environment for workers and the public, while also providing a professional and visually appealing branding opportunity for businesses.