How to choose tiles

In the process of designing residential and contract spaces, choose the tiles It is not a merely aesthetic decision, but a real design choice that affects the performance, durability, safety and perceived quality of the intervention.

In this guide we will analyze how choose the tiles Informed, answering the most common questions and paying particular attention to technical features. The goal is to provide clear and practical criteria for making the right, lasting choice, consistent with the intended use of each space.

Why choosing tiles is so important

Tiles aren't just a simple covering, but a true technical surface subjected to constant stress: foot traffic, humidity, temperature changes, chemical agents, impacts, and abrasions. An incorrect choice can lead to:

• Premature surface wear
• Slipperiness or safety issues
• Difficulty in cleaning and maintenance
• Poor aesthetic performance over time

Choosing the right tiles therefore means balancing aesthetics, technical performance and context of use, avoiding unsuitable solutions that could prove costly in the medium to long term.

Evaluate the use and destination of the tiles

The first criterion for choosing tiles is their intended use. Each room in the home has specific needs, which must be met by materials with appropriate technical characteristics.

Living area: living room, dining room, entrance hall

In the living area, tiles are subjected to frequent traffic and must guarantee a good balance between resistance, comfort and aesthetic impact.

The most suitable material is the porcelain stoneware, thanks to:

• High wear resistance (PEI 4 or 5)
• Very low water absorption (≤ 0,5%)
• Excellent resistance to scratches and stains

From a technical and aesthetic point of view, the following are recommended:

• Natural or lapped finishes, which offer an elegant look without being excessively slippery.
• Large formats (60×60 cm, 80×80 cm, 120×120 cm), which reduce the number of joints and increase visual continuity.
• Effects wood, concrete or stone, very realistic thanks to modern digital printing technologies.

Kitchen: durability and ease of cleaning

The kitchen is one of the most technically demanding spaces. Tiles here must resist stains, grease, impacts, and frequent washing.

Key technical features:

• Chemical resistance to household detergents.
• Low absorption to avoid the absorption of liquids and odors.
• Easy to clean surface, preferably matte or satin.

For the floor:

• Anti-slip class R9 or R10, sufficient for dry indoor environments.
• Standard thickness between 8 and 10 mm, suitable for residential use.

For wall covering:

• Small format tiles (10×10 cm, 15×15 cm, metro tile 7,5×15 cm).
• Or large slabs for a modern aesthetic with fewer joints.

Bathroom: safety, humidity and comfort

In the bathroom, the choice of tiles must take into account the constant presence of water and steam.

For the floor:

• High slip resistance: R10 as a minimum, R11 in shower and bath areas.
• Textured or slightly textured surface.
• Excellent resistance to frost and humidity (even in unheated environments).

For the walls:

• Hard Porcelain Tiles glossy or satin.
• Large formats to reduce joints, improving hygiene.
• Marble, stone or 3D surface effects for a SPA-like aesthetic result.

Bedroom: comfort and visual continuity

In the bedroom, the primary requirement is visual and tactile comfort. Porcelain stoneware wood effect It represents a valid alternative to parquet, offering:

• Greater dimensional stability
• No problems with humidity or temperature variations
• Much easier maintenance

From a technical point of view:

• Matte or natural surface.
• Rectified tiles for small joints (1–2 mm).
• Wear resistance class PEI 3 or 4, more than sufficient.

Exteriors: terraces, balconies and gardens

For outdoor environments, choosing tiles means facing more severe conditions: rain, frost, UV rays and temperature changes.

Essential technical features:

• Frost resistance (UNI EN ISO 10545-12).
• Anti-slip class R11 or R12.
• Textured surface.
• High mechanical resistance.

The use of stoneware tiles is becoming increasingly widespread 20 mm thick, ideal for:

• Floating installation on sand or gravel.
• Raised installation on supports.
• High-load outdoor environments.

Choosing the right tile size

The format affects both the aesthetics and the functionality of the surface.

Large formats

• 60×60 cm, 80×80 cm, 120×120 cm or larger
• Leak reduction
• Greater visual continuity
• Ideal for modern and spacious environments

Medium formats

• 30 × 30 cm, 45 × 45 cm, 60 × 60 cm
• Versatile solution
• Easier to install in irregular environments

Small formats

• 10×10 cm, 15×15 cm, hexagonal, mosaic
• Ideal for cladding, niches, showers and decorative details

Technical advice: Rectified tiles allow for minimal joints (2 mm), improving the aesthetic effect and ease of cleaning.

Surface finishes and aesthetic effects

The finish directly influences friction, maintenance and aesthetics.

• Polished / lapped: elegant, reflective, but more delicate
• Matte / satin: balanced, practical and versatile
• Structured: greater non-slip safety, ideal for outdoors and bathrooms

Most popular effects: wood, stone, concrete or resin, marble, brick or cement tiles.

Tile shading: the importance of chromatic variation

When you have to choose the tiles, the shading represents an essential technical parameter for controlling the final aesthetic result. This term indicates the degree of chromatic and graphic variation Between tiles belonging to the same collection, size, and caliber. In modern porcelain stoneware, shade variation is not a production anomaly, but a design feature designed to make surfaces more natural, dynamic, and realistic.

Thanks to high-definition digital printing technologies, each tile can now feature micro-variations in color, grain, and surface texture. This allows for the faithful reproduction of materials like wood, stone, and marble, which by their very nature are never uniform.

Classification of tone dissonance: V1–V4 scale

The chromatic variation is indicated by the manufacturers through a standardized scale:

Class	Description	Visual impact
V1 – Uniform	Almost identical tiles	Homogeneous surface
V2 – Slight variation	Slight differences in tone	Controlled movement
V3 – Moderate variation	Obvious but balanced variations	Natural effect
V4 – High variation	Each tile is different	Very dynamic surface

This classification is essential for predicting the visual behavior of the flooring once installed, especially on large surfaces.

Shading and aesthetic effect

The degree of shading varies depending on the chosen material effect:

• Wood effect: generally V3 or V4, essential for simulating knots, grain and chromatic differences in natural wood.
• Stone effect: V2–V4, depending on the type of reference stone and the desired level of naturalness.
• Marble effect: V2–V3, to ensure variation in the grain without compromising the overall elegance.
• Concrete or resin effect: V1–V2, preferable for minimal environments and visually more uniform surfaces.

Choosing the correct grade allows you to avoid surfaces that are too flat or, on the contrary, excessively uneven.

Design and installation implications

Shade variation directly affects installation methods. In products with medium-high variation (V3–V4) it is essential mix tiles from multiple boxes to evenly distribute color differences. Furthermore, the size and width of the joints influence visual perception: large sizes and small joints tend to make the variation more harmonious.

Difference between color variation and production defects

It is important to distinguish between color variation and any non-conformities:

The tone dissonance is:

• Declared by the manufacturer
• Uniform within the indicated class V
• Also visible in official samples

A manufacturing defect is:

• An unexpected change
• Out of scale with the declared class
• Present only in some isolated tiles

For this reason it is always advisable to check:

• Class V reported on the packaging
• Tone code
• CALIBRO

How to choose the right level of shading

To choose the tiles correctly, the level of shading must be decided based on:

• Room style (modern, classic, rustic)
• Dimension of space
• Natural and artificial lighting
• Tile format
• Continuity with other environments

Practical information:

• Small and minimal spaces → V1–V2
• Large and natural environments → V3
• Exterior, rustic, wood → V4

Choosing tiles: wear resistance, slip resistance and thickness

When you have to choose the tiles In professional practice, parameters related to mechanical resistance and safety of use play a central role. Wear resistance, slip resistance, and thickness are not incidental data, but performance indicators that determine the material's suitability for the application context, level of traffic, and environmental conditions.

A superficial evaluation of these aspects can compromise the durability of the intervention and generate functional criticalities over time.

Wear resistance: abrasion and surface hardness

Wear resistance measures the tile's ability to maintain its aesthetic and functional characteristics unchanged under the action of foot traffic, rubbing, and abrasive particles.

In porcelain stoneware, two main parameters can be distinguished:

• PEI class (for glazed stoneware): indicates the resistance of the enamel to surface abrasion.
  • IEP 3: residential environments with moderate traffic (bedrooms, bathrooms)
  • IEP 4: living areas, entrances, kitchens
  • IEP 5: high traffic environments, even semi-commercial
• Mohs hardness (for technical or full body stoneware): measures scratch resistance. Porcelain stoneware has average values ​​between 5 and 7, making it suitable for intensive use without visible alterations.

From a design perspective, it is essential to correlate the wear resistance class not only to the type of environment, but also to the frequency of use and the presence of abrasive elements (sand, dirt brought in from outside).

Slip resistance: safety and regulations

Slip resistance is an essential functional requirement, especially in humid or wet environments. It is generally expressed through the R classification, derived from tests on an inclined plane.

• R9–R10: suitable for dry residential interior environments
• R11: recommended for bathrooms, showers, kitchens and areas with possible presence of water
• R12–R13: necessary in external or professional contexts with a high risk of slipping

It's important to note that a higher R-value implies a more textured surface, potentially impacting ease of cleaning. The choice must therefore balance safety and maintenance, depending on the actual use of the space.

Tile thickness: structural performance and installation system

The thickness directly affects the mechanical resistance, the installation method and the compatibility with the substrate.

• 6--10mm: standard thickness for internal floors and coverings, suitable for glued installation on traditional screed.
• 3--5mm: thin sheets, mainly for cladding or renovations with overlapping.
• 20 mm: structural tiles for exteriors, ideal for floating installation, on supports or on gravel.

Extra-thick tiles offer greater resistance to concentrated loads and better stability in outdoor environments, where they are subject to temperature variations and higher mechanical stresses.

Correlation between parameters and intended use

To choose the tiles correctly, these three parameters must be evaluated together:

• High wear resistance without adequate slip resistance can be dangerous.
• A highly slip-resistant but undersized surface in terms of thickness may not be suitable for outdoor contexts.
• A high thickness without correct installation planning can generate flatness and drainage problems.

Choosing tiles: prices

Price range	Features
€10–20/m2	Small sizes, basic finishes
€25–50/m2	Quality stoneware, modern formats
€60–100/m2 and above	Large slabs, design, special effects

Conclusion: how to choose the right tiles

Choosing tiles requires a technical and rational approach, as well as an aesthetic one. By analyzing intended use, size, finish, shade variation, and technical parameters such as anti-slip and wear resistance, it's possible to achieve surfaces that are:

• Functional
• secure
• Durable
• Consistent with the style of the home

Porcelain stoneware, thanks to its excellent technical performance, is one of the most reliable and versatile solutions for both interior and exterior floor and wall coverings. A conscious choice today means fewer problems tomorrow and a quality result over time.