I foresee water getting in the gap and seams when cleaning the floor.
How to hide a huge gap between tile and wall.
Your tile person will take the largest gap and run a tape line using that as the thickness or the caulk.
The other advantage to using steel studs in these areas is they don t warp or shrink.
If you have tile on the wall adjoining the tub select a caulk that matches the color of the grout.
Tool the caulk by drawing your finger along it to form a concave surface.
Great remodelers and builders consider using galvanized steel studs in locations where there will be tile.
If installed plumb and square the finished tile work looks amazing.
Fill gaps larger than 1 8 inch.
The steel studs are perfectly straight.
Lay painter s tape along the edge of the countertop and the wall just above the gap to keep caulk off these surfaces.
With the uneven look you may need to shape the molding to fit.
If your gap is smaller than 1 8 inch in width use regular caulk.
The only thing to cover the gap would be to use 1 4 round molding.
Choose a color that matches the countertop and spread a thin continuous bead with no voids.