A multiple overlapping layer wireless network system for providing coverage in a multiple-office or business environment with multiple APs, and an improved method of designing and installing these multiple layers of wireless networks. Multiple overlapping wireless networks (i.e., multiple layers) are superimposed in the same area, and offset from each other according to their geometry. This results in a multiple wireless network installation with sufficient signal coverage in all areas for all networks with minimal inter-AP interference, segregated traffic, and multiple connections for each wireless network to one or more wired networks, thereby reducing the possibility of a single point of failure.