What is the difference between floor tiles and wall tiles?

Before we dive into the technical details, it’s important to be clear about what each term actually means. Even though they may look similar, their purpose and properties are fundamentally different.

What is wall tile?

Wall tile, often simply called a tile, is a ceramic element designed exclusively for vertical surfaces, meaning walls. Its body (the base material) is lighter and more porous, which means it has higher water absorption. It is not designed to withstand heavy mechanical loads such as foot traffic, and its surface has lower abrasion resistance. Its main role is to provide an aesthetic and protective finish for interior walls.

What is floor tile?

Floor tile, on the other hand, is a more robust and durable ceramic element primarily intended for installation on floors. Thanks to its denser and less absorbent body, it is much more resistant to mechanical load, abrasion and pressure. It meets stricter technical standards for strength, wear resistance and often also slip resistance. Because of these properties, floor tiles can easily be used as wall tiles as well.

A handy rule of thumb says: “What is designed for the floor can go on the wall. What is designed for the wall must not be used on the floor.” This simple rule will help you avoid serious mistakes when choosing materials.

The basic difference between floor tiles and wall tiles – and why you can’t swap them

The key and most important difference is that floor tiles can be used on both floors and walls, while wall tiles are meant only for walls. The reason lies in the different technical properties of the materials, mainly their strength and resistance to wear. Put simply, wall tile is not engineered to handle foot traffic and may crack under load.

Key technical properties that distinguish floor tiles from wall tiles

When choosing, you need to focus on several technical parameters that define how the material can be used and how durable it is. These properties are crucial for understanding why floor tiles are more hard‑wearing than wall tiles.

Water absorption is one of the most important parameters. It shows how much water the material can absorb. Floor tiles, especially those intended for outdoor use, must have low water absorption (ideally below 0.5% for gres tiles) to be frost-resistant.

Materials designed for outdoor use must be frost-resistant, which means they have water absorption below 3% and are marked with a snowflake pictogram. Wall tiles generally have higher water absorption and are not frost-resistant, so they are suitable for interiors only.

Abrasion resistance, indicated by the PEI scale (from I to V), defines the resistance of a glazed surface to wear. This parameter is especially important for floor tiles, which are mechanically stressed by foot traffic.

• PEI I and II: Suitable for walls (wall tiles) or floors with very light traffic, where people walk in soft footwear (e.g. bathrooms, toilets).
• PEI III: For floors in living areas without direct access from outside (e.g. living rooms, interior hallways).
• PEI IV: For floors with higher traffic, including entrance areas and kitchens.
• PEI V: For heavily used commercial areas such as shops, restaurants and public halls.

Hardness is measured on a scale from 1 to 10 and indicates the surface’s resistance to scratching. Quality floor tiles typically reach values between 6 and 9.

This parameter is especially important for floor tiles in technical and heavily loaded areas such as garages. It defines how much load a tile can withstand without cracking.

Slip resistance is a crucial safety parameter, especially in areas where water is present, such as bathrooms, kitchens or outdoor terraces. It is marked with the letter R (R9 to R13), where a higher number means better slip resistance.

Materials and design: The visual side of your choice

While technical parameters are essential, appearance plays an equally important role when choosing tiles. Modern technologies make it possible to produce floor and wall tiles in a very wide range of designs.

Ceramic tiles are a classic and popular choice for both walls and floors thanks to their durability and easy maintenance. Gres (porcelain stoneware) is a type of ceramic fired at higher temperatures, which makes it extremely durable, frost-resistant and very low in water absorption.

Natural stone (marble, granite) adds a luxurious look but requires specific care. There are also other materials, such as wooden wall cladding, which are suitable almost exclusively for interiors and need careful maintenance.

Glazed tiles have a layer of coloured glass on the surface that gives them their colour and sheen. Unglazed tiles are coloured throughout the entire body, so any chips or damage are much less visible.