You did not say why the antenna must be in the building.
The following information is FYI. Mount a Winegard HD9095P antenna with a Antennas Direct CPA-19 preamp above the roof in such a manner that the antenna has the clearest possible view of the Milwaukee Tv stations transmitting antennas and see what can be received.
Aim the antenna at about 356 degree magnetic compass.
Here is how to aim antennas ,
http://www.kyes.com/antenna/pointing/pointing.html.