[biosurfer1]

The deck I have on my new (to me) house is garbage so it's getting replaced.

Still zeroing in on what I want to replace with but thinking about Tigerwood for several reasons.

The deck was originally made with 24"OC joists that seem fine for the 2x6 currently out there (I assume, most existing boards are rotted). I know 4/4 x 6 Tigerwood boards would be pushing it but what about 5/4?

From what I have read, it looks like I'll be going to 12"OC most likely, so my next question would be what is the best way to add the joists to an existing deck. Currently the deck is about 3' off the ground. For ease of leveling, should I try and add the joists with the current deck boards left in place? I inspected the existing joists and luckily they have aged well, no rot etc. At least if I have to go to 12" joists I can easily for 4/4 boards.