You can adhere to safety guidance from HSE who recommend you to include pieces of equipment such as ladder guards and perimeter fencing, when it pertains to erecting your scaffolding for your project. http://cse.google.am/url?sa=i&url=http%3A%2F%2Fwww.metooo.co.uk%2Fu%2F6616c67f0c22f011b874aac9