If possible don t do it.
Laying tile floor not level.
Tiling over an uneven surface will give you less than stellar results so level out any globs of dried grout with a sander and secure loose tiles with fresh tile adhesive before beginning the project.
If you do not have a good subfloor your tile will not lie flat.
Before installing tile on your floor you must make sure your floor is properly prepared.
A properly prepared floor does not have to be level.
Before beginning remove tiles from the different boxes and randomly mix them to ensure that minor color differences don t form an unwanted pattern in your new floor.
Tiles may crack pop loose or lip a condition that occurs when the corners.
Your tile work is only as good as your substrate or subfloor.
If you have items in the way like radiator pipes or bath pipes you ll need to drill holes in those tiles ahead of time so they can fit in place.
Perimeter tiles will need to be cut.
For more on prepping the floor read prep a tile floor.
It must however be flat.
First make sure you have prepared the subfloor properly before you begin laying tile.
Tile over existing tile floor be sure to break or create a rough surface so the adhesive created proper bonding between both surfaces.
Tile leveling systems can help keep your tiles level aligned properly spaced and held in place while the tile mortar cures.
An uneven floor or wall surface can lead to several problems in a tile job.
Used correctly tile leveling systems can make the process of installing tiles go faster and improve your result.
Self leveling underlayment products can be used on concrete floors wood subfloors that are uneven but still in decent shape and even over ceramic tile floors eliminating the task of tearing.
Tile over hardwood flooring this is not the best option and one very common mistake.
So the question is can i tile say half way and leave my self an out of the room and come back 24hrs later and finsh up the rest or is it better to tile the entire floor at the same time.
The only time the levelness is that a word must be taken into consideration is when drainage is an issue such as on a porch or in a shower.
Tile laying tricks for uneven surfaces.
When you re ready to lay the tile you ll need to start from the exact center of the floor and lay the tile in lines toward either wall leaving a small space between each tile.
I was always taught to follow the tile when installing it so taking that into consideration i am tiling from the doorway in.
Use this home depot guide how to install a tile floor for more information.