Double up on the savings- both labor and materials
Installation instructions for your Decor Ceilings brand ceiling tiles onto a T-Bar ceiling
To put in your tiles onto the existing T-bar system, you first need to make the "false" framework for your ceiling structure on that T-bar system using materials such as MDF, Plywood, Block board etc.
It's really a good idea to color your grids before putting in PVC tiles with either a foam roller or spray gun to correspond with the tiles finish (one example is, whenever putting in Silver tiles you would want to paint the grids silver).
The simplest way would be to utilize old drop tiles for supporting our PVC tiles
Now just glue our tiles one at a time onto the “false” ceiling tiles and put them onto the grids (if need be, trim back the sides of the PVC tiles to ensure a proper fit onto the grids).
If your current tiles are 2'x4', then you've got 2 choices:
Glue a pair of PVC tiles onto the current 2' x 4' tiles
Divide up the 2' x 4' openings in equal halves with 2' x 2' T-bar picks, cut the existing drop tiles to create 2' x 2' tiles, then glue your PVC tiles onto those equal halves one at a time