This area gets a lot of water and this are this is where the caulking will need to be replaced most often in a tile shower.
Gaps between floor tiles caulk or grout.
Left in a state of disrepair gaps can catch shoe heels allow drafts into the home and capture dirt and dust between the boards making it difficult to clean.
Before refinishing the floors you can solve the problem by caulking between the floorboards to close the gaps.
As with any other gap near your bathtub you ll want to close the opening to prevent any possible water damage.
Similar to the gap that can exist between your wall tile and tub you may have a space between the floor and your bathtub.
At most tile specialty shops you can get or order sanded caulk most floor grouts are sanded that will closely match your existing grout color.
Unsanded caulk may not adhere as well as sanded caulk to wet surfaces and sanded grout.
Since sanded caulk can crack tile and other materials when it expands in too small of a space unsanded caulk should be used to fill tight joints that are smaller than 1 8 inch wide.
Gaps between floorboards are a common problem with older hardwood flooring.
Grout or caulk between floor tile and tub.
This gap may widen over time as your home shifts.
This fix is only practical for interior tile floors and when the gaps between the tiles are 1 4 in.