I'm installing recessed lighting fixtures in the ceiling of my second floor (below the third floor--hence no insulation) in an old Philadelphia house. The problem I've run into is that the hanger bars for the fixtures collapse to 14 inches, but the beams are only 12 inches apart. This is essentially "new construction" because I've removed all of the old plaster ceiling and will be replacing it with sheet rock. I can see a few possible solutions. One is that I create new beams by installing 2x4s between the beams at 14-16 inches apart and then hanging the fixtures as I would if I were working with modern beams on 16 inch centers. Another option would be to modify the hanger bars with a hacksaw to make them collapse to 12 inches. Or, I could look out for some specialty fixtures that would fit. Finally, I could take the Home Depot attendant's advice and "just let 'em sit on top of the sheetrock" (which I'm extremely disinclined to do for a number of reasons). I would appreciate any guidance. Thanks,
Andrew