Insulated Ceiling Tiles do not give you the insulation you think you are getting, since you have a 1 inch gap around each one for the grid that is not insulated.

Only true way to insulate your ceiling is to get rolls of insulation and install them over tile and grid.

Genesis Tiles & Grid are all Class A (1), fire rated, UL 94, Waterproof, Washable, Mold Proof.