The easiest ceiling tiles to install are typically those that use a drop ceiling or suspended ceiling grid system. These systems allow tiles to be easily placed and secured within the metal framework without the need for adhesives or complex tools. Lay-in tiles are particularly user-friendly; they simply lay on the grid system, allowing for straightforward installation and easy access to the area above the ceiling for maintenance or repairs.

Yes, you can install ceiling tiles over plaster ceilings. One effective method is to install a suspended ceiling grid system beneath the existing plaster ceiling. This does not disturb the plaster surface but adds a layer underneath where the tiles can be easily inserted. This method is particularly beneficial in older buildings where preserving the original ceilings is essential or where additional insulation or acoustic control is required.

Ceiling tiles are primarily held in place by suspended ceiling grids, which are composed of metal strips called mains and tees. The grid is suspended from the true ceiling using wires, and the tiles are then laid into the sections created by the grid. For direct mount or adhesive ceilings, tiles can be glued directly to a smooth, clean surface with a special ceiling tile adhesive.

The two most common sizes of ceiling tiles are 600x600 mm and 600x1200 mm. These dimensions fit most standard suspended ceiling grids and are widely used in both commercial and residential settings. Choosing between these sizes typically depends on the specific requirements of the space, with 600x1200 mm tiles being preferred in larger areas due to their ability to cover more space with fewer tiles, resulting in quicker installation and fewer seams.