Why would you think the insulation needs replacing?
You do plan on just drywalling right over the old ceiling tiles. right?
If anything you may need more.
http://www.energystar.gov/index.cfm?c=home_sealing.hm_improvement_insulation_table
You do plan on just drywalling right over the old ceiling tiles. right?
If anything you may need more.
http://www.energystar.gov/index.cfm?c=home_sealing.hm_improvement_insulation_table