Construction sites are of course working locations, and often out of bounds to members of the public; however, that does not mean that you will not need any signs until the structure itself is completed. While work is being carried out, there are likely to be certain aspects of health and safety to which your workforce must be alerted, not to mention any passers-by who are not in your employment, and have not received the relevant safety training.
For instance, work carried out close to an airport terminal, or to a rail or bus station, might make it impossible to totally close off public access – signs here can warn pedestrians of the presence of heavy plant, uneven surfaces underfoot, and so on. Beyond health and safety, construction sites are naturally eye-catching, making them a good opportunity to advertise your services to anyone who might be looking for a building firm.
Construction site banners do this effectively, with large and easily legible lettering that can outline your services, company name and contact details. Finally, when work is being carried out on public facilities such as a library, banners can provide more information about what exactly is being done – so that your construction workers are free to do their work without facing questions from interested members of the public.