When imagining a new floor or wall covering, attention tends to focus on colors, sizes, and textures that give character to a space. Thickness, on the other hand, tends to go unnoticed.
But it is a determining factor in the success of a project because it affects the strength of the material, installation, weight of the slab, and even the everyday functionality of the rooms.
Depending on its thickness, a tile can withstand different loads, perform better in certain environments, or be suitable for withstanding certain factors, such as frost, temperature changes, and wear and tear.
For this reason, it is essential to choose the most suitable thickness for your project and not just focus on aesthetics.
The most common thicknesses of the tiles
Here are the most common types of tiles and their main uses:
3–6 mm: ultra-thin slabs
These are lightweight and versatile tiles, often in large formats, designed primarily for cladding or overlaying without demolition.
Ideal for quick renovations, walls, shower cladding, and installation on existing floors.
Please note: they require professional installation and appropriate equipment.
8–9 mm: the standard for interiors
This is the most common thickness for interior floors and wall coverings. It guarantees an excellent balance between strength, practicality, and aesthetics.
Ideal for: living areas, bedrooms, residential areas.
10–11 mm: for more demanding environments
Greater thickness generally means greater resistance to bending and impact.
Ideal for: kitchens, high-traffic entryways, light commercial surfaces.
20 mm: specifically for outdoor use
20 mm porcelain stoneware is designed to withstand weather conditions, heavy loads, and even “dry” installation on gravel, sand, or grass.
Ideal for: terraces, gardens, walkways, driveways.
How to choose the right thickness
To help you decide, it is useful to consider a few key factors:
• Intended use: residential interiors require different solutions than exteriors exposed to the elements or commercial surfaces;
• Type of installation: glued, raised, or “dry” installation on gravel or sand can influence the choice of thickness;
• Loads and performance requirements: areas that are heavily used or subject to impact may require a slightly greater thickness;
• Design constraints: in the case of renovations, overlays, or the presence of underfloor heating, it may be useful to opt for reduced thicknesses.
The ideal tile thickness for home interiors
For indoor environments, it is important that the floor is balanced: sturdy, durable, but also practical to install and maintain.
The most common thickness for indoor floor tiles is 8–9 mm. It guarantees excellent performance for everyday use and allows you to choose from a wide range of collections, sizes, and finishes.
Some areas of the home require special attention. The kitchen, for example, is subject to falling objects, frequent washing, and constant foot traffic.
Here, a slightly greater thickness may be a more sensible choice.
The bathroom, on the other hand, has requirements related to humidity and the presence of water.
Here too, a thickness of between 8 and 10 mm guarantees stability, adhesion, and durability.
Exteriors and terraces: why thicker tiles are needed
Outdoor floors are exposed to very different conditions than indoor floors: temperature changes, rain, frost, UV rays, and, in some cases, heavy loads.
This is why 20 mm thickness has become the standard for terraces, balconies, porches, walkways, and gardens.
A thicker tile guarantees stability even when laid using the floating or dry method, allows for excellent water drainage, and offers superior resistance in the most demanding situations.
In addition, the 20 mm thickness is compatible with raised substrates and allows for the creation of inspectable flooring, which is an advantage when dealing with systems or slopes.
How to navigate choices, environments, and materials
Choosing the right thickness means balancing aesthetics, functionality, and technical performance, taking into account the real needs of the environment.
Each project has its own specificities; knowing how different thicknesses behave helps to avoid mistakes and achieve a lasting result.
Ceramiche Dordini provides clear technical information, a complete selection of materials, and expert support to identify the most suitable solution for different needs.
Comparing thicknesses, intended uses, and characteristics becomes simple and reliable, allowing you to choose with confidence and assurance.
