Prep your subfloor really well. Screw down subfloor into joists with wood screws, build up with additional plywood, I use another 5/8" on top of existing 5/8" subfloor. Screw down.

Check floor for level. If some areas, like corners, are especially low, pour self-leveling compound to correct. Will save you a lot of hassle and mud when installing tiles.

If you are using any kind of natural stone or porous tile, seal before grouting, then seal again after.

Take time to plan your layout and starting points. Any centering natural hallways or sightlines can be paralleled with the layout.

A good tile saw, with water, is worth renting. Practice a few cuts on scrap, especially if you are installing large tiles.

Good luck!

__________________
Chris
2007 E550 4Matic - 61,000 Km - Iridium Silver, black leather, Sport package, Premium 2 package
2007 GL450 4Matic - 62,000 Km - Obsidian Black Metallic, black leather, all options
1998 E430 - sold
1989 300E - 333,000 Km - sold
1977 280E - sold
1971 250 - retired

"And a frign hat. They gave me a hat at the annual benefits meeting. I said. how does this benefit me. I dont have anything from the company.. So they gave me a hat." - TheDon