If you don t love the idea of making your shower niche stand out it s perfectly ok to continue the same tile and pattern into the niche.
Niche mitered tiles across main wall.
Natural stone such as marble granite and travertine can be polished so that the edges look finished.
Natural stone tile edge trim.
In some cases the edges may not even need polishing.
The change of substance from grout to sealant will be noticeable.
Here limestone is used as trim for every exposed edge of the ceramic wall tile.
By making the sill stick out by 1 16 he ll make the pencil tile hang out over the main tile by the same distance.
As you can see in this picture steve is using 12x24 wall tile that s the same thickness as the sill.
Photo by scott norsworthy a full height marble mosaic wall is the main feature wall which forms the backdrop for the original clawfoot tub and becomes the wall of the shower.
A storage niche for towels.
If you re planning a wall niche lay out the tile and take some measurements to determine the size of the niche.
It s better that the wall tiles protrude into the opening too much than too little since you.
Ez niches usa 8in x 14in small rectangular niche ready for tile preformed bathroom recess it shampoo shower wall niche shelf 4 4 out of 5 stars 203 45 99 45.
With a diagonal tile layout like the one shown here you ll get full tiles and half tiles.
Just haven t started the wall tiles around the niche yet so i think the jolly is still doable.
I d recommend making sure your tile lines up exactly and the grout line is very clean see above or use a thin pencil trim to frame the box see below the goal is to create a niche that looks well built balanced and has nice craftsmanship.
Understand your issue particularly if the niche is in line with the grout line of the tiles abutting it.
Common practice for corner joints is that the tiler would use some form of extruded aluminium or plastic profile to act as a flashing and to also help align the tile joint.
If you custom size the niche to fit between full tiles you ll get a better looking installation and avoid some cutting.
But you can buy a few pieces of travertine and cut them down into smaller sizes.
First installing the box then.
I ve also already built the niche with tile.
If you re mitering the joints between the wall tiles and niche tiles as i am here the wall tiles must protrude into the niche box by the thickness of the tile and thinset and be mitered before you install them.
The sill tile should hang outside the niche by 1 16 if you ll be using pencil trim tile to frame the niche.