Read about the physics background in http://en.wikipedia.org/wiki/Faraday_cage.
Then contact the company where you bought your ubiquity professional datacom stuff to see what outdoor antenna's and such they offer to solve this problem.
Hey guys, I have a pretty complicated set up when it comes to getting internet out to my workplace. We have a ubiquiti(U1) set up a couple of miles away beaming internet to another ubiquiti(U2) at my workplace. Then we have another ubiquiti(U3) wired to that one to send the signal to my house about a quarter of a mile down the road. I have another ubiquiti(U4) that picks up that signal and is connected to a wireless router in my house. I have a metal building in between my workplace(U3) and my house(U4). I can pick up the signal from U3 with my laptop standing outside the metal building but once I go inside, the signal cuts out completely. I was wondering what the best way is to be able to pick up the signal inside the metal warehouse. Thanks for all your help!