Facade protector
At the junction of the back of the door and the floor tile, a moisture-proof tape or a wooden board is skillfully affixed to protect the surface of the door from the moisture of the floor tile.
Tile fitness
If the door is only a few millimeters from the ground, consider reducing the size of the floor tile to leave enough space between the door and the floor tile.
Door frame deformation
If the position of the door is relatively low, you might as well change the door frame to a higher one, or use a detachable door frame and door panel, so it is much more convenient to reinstall the door after pasting the floor tiles.
Porch transformation
If all the above methods fail, you may have to make a big move. Consider replacing the porch to adapt to the new floor tile height. Short doors or heightening the entrance are good choices.
Comprehensive consideration.
No matter which way you choose, remember to measure carefully before you leave, and consider the size, shape and color of the door in an all-round way.