I had a new shop built last summer, and I went back and forth on having windows installed at the time. In the end, no windows were installed. That was a mistake.
The building is 2x6 construction on 24" centers and skinned over with corrugated metal. It will be insulated and drywalled soon after the windows go in. I'm planning the window install now, and would like to get some advice on the subject. I will be building a properly dimensioned rough opening for the windows to fit into. I'm imagining removing sections of metal siding and using new construction windows with mounting flanges and built in J channels. Then I would cut out the metal to be just slightly (1/4" larger than the window), and install it behind the J channel. Caulk between window and siding, and call it good?
Am I missing something? I'm concerned how the window will sit given the fact the metal is corrugated. One side might be on a hump and one side in a valley. I have flexibility and can probably minimize that by making small adjustments to the location, but top and bottom will have lots of peaks and valleys along the width of the window.