I foresee water getting in the gap and seams when cleaning the floor.
How to hide a huge gap between tile and wall.
Fill gaps larger than 1 8 inch.
Your tile person will take the largest gap and run a tape line using that as the thickness or the caulk.
This will give you say a perfect 3 8 caulk line with an irregular wall to counter gap.
The other advantage to using steel studs in these areas is they don t warp or shrink.
With the uneven look you may need to shape the molding to fit.
Lay painter s tape along the edge of the countertop and the wall just above the gap to keep caulk off these surfaces.
The steel studs are perfectly straight.
If your gap is smaller than 1 8 inch in width use regular caulk.
Choose a color that matches the countertop and spread a thin continuous bead with no voids.
If installed plumb and square the finished tile work looks amazing.
If you have tile on the wall adjoining the tub select a caulk that matches the color of the grout.
Great remodelers and builders consider using galvanized steel studs in locations where there will be tile.
Apply the caulk with a caulking gun.