Good to hear that the beadboard is gone. That crap is one hell of a fire danger, and it amazes me that more folks don't realize how dangerous it is. A lot of half assed basement renovations were done with drop ceilings that had the standard metal grid, but instead of installing the proper, fire rated acoustic tiles, thin beadboard panels (designed for insulation, behind ceiling tiles) are dropped into place. The stuff is a fire nightmare, it off gasses toxins, the flame spread I quick, and it drips molten plastic. Sounds like your doing a great job, AND got rid of a serious life safety issue.