Why the interruptions favor a sheet
A backsplash is broken by outlets, switch plates, a window over the sink, the end of each counter run and the wall behind a range.
Every one of those is an edge that has to be cut to. A sheet gets trimmed between its pieces and the loss is invisible; a field tile has to be cut through its own face, and on a run this short the cuts are a large proportion of what is on the wall.
The material spread is the widest in the catalog
Porcelain leads, then marble, ceramic, glass, pebble, metal and clay.
No other backsplash collection carries that range, and the reason is the area. A backsplash is small enough that a material which would be an expensive or difficult proposition across a floor is a reasonable quantity here. It is the surface where the catalog's whole material list becomes affordable at once.
Matte leads, which is unexpected
Matte is the largest finish group here, ahead of glossy and polished.
That is not what a backsplash range usually looks like, and it comes from the porcelain half: a printed stone mosaic is matte because the stone it copies is. The glossy and polished groups together still outnumber it, and they are the ceramic and marble sheets.
12x12 and the 2x2 chip
12x12 leads the sizes by a very wide margin, with a large 2x2 group and 4x12, 12x24, 2x6, 2x4 and a long tail behind them.
A 12x12 sheet covers a square foot, which on a backsplash is a useful unit: the area is small enough that a tidy relationship between sheets and square feet saves real arithmetic. The 2x2 is a chip size rather than a sheet size.
The 16x48 panels
A group here is supplied at 16x48, which is a four foot panel carrying many small pieces on one backing.
Those exist because the work in a mosaic wall is the number of units handled rather than the number of pieces in them. On a long counter run a four foot panel covers the distance in a fraction of the movements, which is why they turn up in commercial kitchens more than domestic ones.
The joint is a larger share of the wall
A mosaic holds far more grout line per square foot than any field tile, and on a backsplash that joint sits at eye level two feet from anybody at the counter.
So the joint color is a bigger decision here than on a floor, where it is looked at from six feet and mostly underfoot. A joint matched to the pieces gives one continuous textured surface; a contrasting one turns the sheet into a drawn grid. Neither is wrong and they are two different walls.
The shapes the format allows
Behind the plain grids sit herringbones, pickets, hexagons, arabesques and brick patterns, all of them arriving pre-assembled.
That is the other reason a backsplash runs to mosaic. A pattern laid piece by piece is slow and unforgiving over a short run with many edges; on mesh the figure is already set and the work becomes lining sheets up. It puts patterns within reach that would otherwise be specialist work.
White and gray, then the colors
White leads by a long way, then gray and beige, with multicolor, blue, black, brown and green behind them.
The colored sheets concentrate in glass and glazed ceramic rather than in stone, which is the same division that runs through the whole catalog: a quarry produces neutrals at this scale and a kiln produces anything. Mosaic tile is the sheet range in full, floors included.
Thickness is the thing to settle
The figures here run from under a quarter of an inch to over 3/8, which is the widest spread of any backsplash collection.
It follows from holding glass, ceramic, porcelain, marble and pebble together in one collection. Two sheets from this page will not necessarily finish flush against each other, which matters because a mosaic band set inside another material is one of the commonest things people do with these. The figure is on each product page and it is worth comparing before two sheets are ordered for the same wall. Backsplash tile holds the larger formats for the same wall.