We were part of a project at West Point military academy, where the plan was to add interior storm windows after the primary window restoration. It was in officer’s family housing where they needed to remove the old wooden sashes to do offsite lead abatement, so the sashes would be gone for 3-4 weeks.
Because this was occupied housing, they were required to have no more than 50% of the windows boarded up at any one time. Putting plywood in the window openings was going to be expensive and damaging to the original woodwork, and completely unsatisfactory to the residents.
We suggested that the Innerglass Windows should be temporarily installed, instead of boarding up the openings. This resulted in considerable cost savings and happier residents. Scheduling sash removal and re installation was greatly simplified and was able to be done more efficiently.