It is common thing to see buildings under construction being covered with some green net-like materials. This is not just for some weird reasons but for so many reasons. The material is not just these normal nets but is a very heavy duty net.
The net is called a scaffold safety net in construction. It is used to create a barrier around a construction sites. The material used to make scaffold net It is a lightweight, strong material such as polypropylene or nylon.
The net is a safety measure that protects construction workers and it is also used to protect surfaces from dust that can affect the desired outcome.