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.
Tile over tub flange.
Divide the dimension in half and make a mark there.
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.
That flange needs to be covered or it will look pretty strange.
Check if you need to adjust this mark to avoid laying slivers of tile at the top and bottom.
Use your silicone along this seam.
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.
The best approach when installing cement board or other tile backer around a tub is to keep the cement board out of the lip area.
Fill the gap between the tile and the tub with caulk.
After you finish the wall install the bottom row.
That means building a small wall down on that end of the tub that comes up and wraps over the tile flange with tile.
And it lasts for 20 years.
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.
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.
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By using the right kind of materials and tools it is possible for you to tile over the tub flange with ease and efficiency.
Tile on tile or as i say it.
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.
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.
Maybe cap it off with similar material as your countertop.