Hello all! I am brand-spank'n new to this forum...and I have a question for any pros out there - I bought a house a couple months ago that I would like to completely renovate. One of the first things "we" would like to do is rip up the nasty flooring and install tile and hardwood. However - I noticed that the floor joist are 24 OC While the home inspector said that this will be fine for any flooring I wish to put down, the skeptic side of me wants to reach out to the masses for some more input here... The facts - The house is 9 years old The joist are TJI pro 150 engineered (11 7/8") The sub is 7/8" thick (1/8" thicker than the norm - 3/4") The span (at the longest point) is about 15' The cross beam supports are steel The floor certainly doesn't feel "spongy" or anything - but I'm still concerned... I used to frame houses when I was younger, and I have never installed ANY floor joist wider than 16OC. The inspector claimed that this floor was more sturdy than a floor comprised of 2x10's 16OC - and I would be fine putting down any floor. All that being said - Will I run into any issues with tile and wood floor? I am looking at a ceramic tile (18x18 or 20x20 - suggestions on thickness?). The wood floors are still undecided at this point. I am concerned that there would be some kind of sag developed over time and cause tile grout (or the tile themselves) to crack, etc. The wood floor wouldn't be as big of a concern in my mind being that the planks will run perpendicular to the joist - however, there will still be seems in between in spots (I will stagger the joints - but still) Any advise out there? Are my concerns warranted - or am I being paranoid!? Thanks in advance!