Frequently Asked Questions
What types of surfaces are available, and what are they used for?
Different product lines offer different surface finishes, depending on their design. The most common finishes are:
• Glossy (Polish/Lappato)
• Semi-gloss (Semi-polish/Reflex)
• Natural (Naturale/Matt)
• Textured surface with small grains (Grip)
• Highly textured surface with fine grooves (Strutturato)
The choice of surface finish depends on its intended use (for example, the area to be tiled) and the desired look of the space. As a general rule, floors in areas prone to slipping, such as bathrooms, spas, swimming pools, and outdoor spaces, can use tiles with finishes ranging from natural (slightly textured)0 to highly textured. For wall cladding, glossy tiles are also an option. Finally, not every product line comes in all of the finishes listed above. Depending on its design, a product line may offer from 1 to more than 1 different finishes for customers to choose from.
What tolerances are allowed?
Under European (CE) standards, the maximum permitted tolerances for the characteristics of typical tiles, such as size and shade, are 2%.
These permitted tolerances are usually indicated on the product packaging or in the manufacturer's accompanying certificates. For example:
Size 60×60 may have the following calibers:
| 05 | 595×595 |
| 06 | 596×596 |
| 07 | 597×597 |
| 08 | 598×598 |
| 09 | 599×599 |
| 0 | 600×600 |
| 1 | 601×601 |
| 2 | 602×602 |
| 3 | 603×603 |
Or size 50×50 may have the following calibers:
| 3 | 492,6×492,6 |
| 4 | 494,6×494,6 |
| 5 | 496,6×496,6 |
| 6 | 498,6×498,6 |
| 7 | 500,6×500,6 |
Measurements of sizes and tolerances should be carried out using specialized quality inspection and measurement tools.
What is the difference between ceramic and porcelain tiles?
Most tiles are made from clay or a mixture of clay and other materials, then fired in a kiln. These are all part of the broad category of “glazed tiles,” which is divided into two groups: porcelain and non-porcelain. Non-porcelain tiles are commonly referred to as ceramic tiles to distinguish them from porcelain tiles.
Ceramic or non-porcelain tiles are usually made from red or white clay and fired in a kiln. They are typically coated with a surface glaze in a range of colors and patterns. Ceramic tiles are used on both floors and walls and are generally softer and easier to cut than porcelain tiles. Non-porcelain tiles are usually better suited to low-traffic areas (such as public buildings) and have a higher water absorption rate than porcelain tiles.
Porcelain tiles are usually made from pressed kaolin powder or stone powder and fired at temperatures between 1,200 °C and 1,400 °C. Their hardness and durability result from glass compounds and silicate minerals fired at high temperatures. Porcelain tiles generally have a lower water absorption rate (less than 0.5%) than ceramic tiles.
Glazed porcelain tiles are coated with a surface layer, which is then melted and fused into the kaolin body. This type of tile allows for a wide range of designs, patterns, and colors, as well as resistance to stains during use.
Through-body porcelain tiles have the same material and color throughout, from the surface to the interior. They can be used for all purposes, from residential and commercial to industrial applications.
What are rectified tiles?
These tiles have their edges processed after firing to ensure they are square and straight, making them suitable for installations with no grout joints or narrow grout joints.
How much extra should I order?
How much extra should I order? Typically, you should order about 10% to 15% more than the calculated total. This is necessary because tiles may need to be cut or drilled during installation, and a minimum quantity should also be kept in reserve for future minor replacements.