Use your silicone along this seam.
Tile over tub flange.
I plan to add to 3 8 spacers on the studs at flange area so as to bring the front of the tile flange just back approx.
Maybe cap it off with similar material as your countertop.
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Fill the gap between the tile and the tub with caulk.
That flange needs to be covered or it will look pretty strange.
Above the lip of the tub.
Then apply a generous amount of thin set to the bottom bathtub tile and position it 1 8 in.
They are also easy to clean and can be found in numerous styles colors and sizes.
To tile around a tub or shower start by measuring the height of the back wall from the lip of the tub to the top of the area to be tiled.
That means building a small wall down on that end of the tub that comes up and wraps over the tile flange with tile.
Tile on tile or as i say it.
By using the right kind of materials and tools it is possible for you to tile over the tub flange with ease and efficiency.
Start your first row just about less than a full tile above the tub edge by using a level straight edge tacked to the wall.
Divide the dimension in half and make a mark there.
Most three sided tubs will have a tile flange raising upwards from those three sides.
Apply it to the wall with the bottom edge about 1 4 in.
1 8 from the front edge of the densshield by the way the tub manufacturer oceania in quebec is adamant about no mechanical fasteners in or above the tile flange only silicone to the studs painters tape the tub then fill gap and onto the densshield with kerdi fix then apply kerdi tape and smooth out after drying redgard as much as possible.
You may have to cut the bottom row which is normal but it will give you a custom finish all the way down to the tub edge.
After you finish the wall install the bottom row.
Tile are a very common way of finishing the walls in remodeled and new baths as they are impervious to water and highly stain resistant.