I have a steel sided frame building to store my bus in in the winter. I'd keep it in there in the summer too, but there is a problem with condensation... I literally have puddles on the floor under anything over 3" square, and I've seen it literally drip from the ceiling. Here is the deal - it's a frame building, 6" stud walls 12 feet high with an engineered truss ceiling/roof, full span. It's roughly 60 feet by 50 feet, and there is R-20 insulation in the walls and ceiling with vapor barrier plastic. The floor is a concrete slab. There is little to no ventilation in the attic, there is very little ventilation in the building itself unless I open the big sliding doors. On a warm day like today (for here at least) the temperature inside the building is around 20 degrees cooler than outside, and it's very humid so I get the condensation because the floors are below the dew point of the air. My goal is to let it get a bit warmer and find a way to get air circulation so I can get rid of the dampness. My first thought at this point is to remove the R20 bat insulation in the ceiling so the air can circulate, and open up soffit and peak vents in the roof.
Anyone have any experience with these large buildings? Any ideas that don't involve air handlers and dehumidifiers are what I am looking for... I won't be heating the building in the winter, so there is little need for the insulation.
Thanks, Brian