Ok, just want to say in advance thanks for all info. I have seem the process before but never attempted myself. I am currently redoing my house I have about 1000 sq ft of tile to do in the house. I am doing all the same tile in a pinwheel throughout this area. I know the mud is going to be about 1 1/2" thick under the tile. First question is should I use "mud" or jibcrete? Second, I have figured since reading the mix is 4:1 I think I will need 4yds of sand and 1yd of portland for this cubic area. does this seem right? How many and of course what size bags of portland would I need for 1 yd? I would think the jibcrete would be the best way for me to get a better finish however I don't even know the cost of it compared to mud. I realize the labor would be a lot less. Again Thanks and any advice would be appreciated.