I installed one last year in my basement. This was my first attempt at this.I also used 2' tiles.The salespeople at the store I puchased from were very heplful. I also found some online tutorials. My ceiling is about 20 x 25. It took me about 4 days. Most time comsuming part was trimming the edge of the tile that runs along the wall. Not only do you have to cut to size but also put a recessed edge on it so it seats properly in the grid. I used a lazer level to install the perimeter grid. NIce thing at the placed I bought from was you give em your ceiling size they feed it into the computor. And it gave me a diagram of the grid layout and how much and what size grid I needed. This was a good reference during the installation. Overall it was'nt as hard as I though it would be and it looks great.