However it will eventually fail in one of two ways.
Gap between floor tile and wall.
The water being blocked by the sealant will find another gap in your foundation to enter the home.
There shouldnt be a gap between wall and floor.
Never fill this gap with grout because tile grout is not flexible.
Any gap should never be greater than 1 8 inch.
You can try and maybe nothing will happen but if it cracks you will have to dig it out.
The tile council of north america recommends at least a quarter inch gap between the tile floor and the walls.
It shows how to seal a gap in the corner where the tile floor.
However it s not that simple.
Get photos of great finish details include photos with bid and contract.
The d i y video how to seal a big gap between tile floor and tile wall in a bathroom or shower.
Your walls and floors are pretty stiff but there can be movement between the two that will crack the grout.
Ceramic tile wall gap back of tile should rest on finished wall.
In the short term a sealant applied along this gap between your basement floor and wall may prevent leakage.
Whenever tile has a right angle like that grout is prone to fail so caulk is used.
Tile stores generally sell caulks that match the grout.
Typically this will be cracks in your foundation.