Regarding the type of tile to use on the shower floor, it is not advisable to utilize natural stones such as marble or travertine. While this type of material is usually sealed as part of the installation, circular stains or discolorations will begin to appear on different parts of the shower floor after a few months or years. That occurs because natural stones have pores and cracks that cannot be seen with the naked eye but that over time begin to leak water into the interior. Thus, we could say that they act like sponges, capturing small amounts of water within themselves.
Porcelain or ceramic are perfect options for the shower floor since these materials do not have pores; therefore, they repel water more efficiently. As a result, over the years, it does not suffer discoloration caused by water accumulation. Although ceramic tile may show a lack of color or wear in some areas, these are due to the quality of the product and not to the water’s exposure. Later we will talk about the quality of the tiles.
Walls, given their verticality, are less likely to accumulate water inside unless there is a water leak in them (within this blog, there is a post that deals with this issue). Instead, this part of the shower is more exposed to steam and soap scum. Thanks to this, it is possible to be more versatile in the size and kind of tile used. The big problem to consider is the difficulty in keeping the walls clean. Small-format tiles naturally have more grout lines. Depending on the type of grout used and the sealing treatment applied to them, these lines tend to accumulate traces of soap and dirt quickly. Thus, we could say that small tile walls need more care to keep them clean.