No leaking from the nesting box and storage box because it has rubber flashing under the siding and hinges and it also has a termination strip holding it all down. It has an insulated ceiling, vinyl flooring, 2 roosting bars, 3 nesting boxes and a hanging feeder. The windows were from the local do it center, 1 window is a basement window and there are 2 vent windows for glass block tile (which works quite nicely). It can be moved with two people easily.... it has 4 wheels, the front end set are swivel casters wheels and the rear are larger utility trailer wheels. the girls seems to really enjoy it! thanks for all your awesome comments!