I'm looking at a ceramic floor project on new construction. Being an 'old timer' I'm not sure the floor system will support the finished job. Here's the specs: New 20x20 porcelian tile in 12'x20' kitchen and dining area. TJI 230 joists spanning 15' with Huber/Advan Tech subfloor. The joists are completly accessable in basement if any 'beefing up' is required. Any feedback appreciated, THANKS!:confused1: