For smaller tiles is advisable to use small spacers.
Gap between floor and wall tiles.
Fill gaps larger than 1 8 inch.
The large format 18 inch tiles should have inch space in between.
Not filling the gap can allow water to migrate undeneath the tiles.
It might loosen them and might rot the floor.
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There is a gap of say 5mm to 8mm give or take high between where the floor tiles meet the wall tiles in the bathroom.
Caulking is the best choice for this application.
If your gap is smaller than 1 8 inch in width use regular caulk.
Instead fill it with an elastic material capable of sustaining the movement of the floor and the movement of the wall.
Gently spread the tiles and place two spacers between them one at the top edge of the seam and one at the bottom edge.
Gap between floor tiles and wall tiles.
It shows how to seal a gap in the corner where the tile floor.
As the tiles increase in size a larger gap becomes acceptable.
The d i y video how to seal a big gap between tile floor and tile wall in a bathroom or shower.
Never fill this gap with grout because tile grout is not flexible.
Gently push the tiles together so the spacers are tight in the joint.
The gap goes 3 5cm to 4cm back to the breeze block.
I m guessing its the thickness of the dot and dab then plaster board then tile adhesive then tile.
The tile council of north america recommends at least a quarter inch gap between the tile floor and the walls.