Cerâmica Portinari

Technical Questions

What is a porcelain tile?

A porcelain tile is a ceramic product, stated by the ISO 13006/NBR13818 standard as having a Bla specification, meaning that it is a pressed material with a water absorption level lower than or equal to 0.5%. The porcelain tile is obtained from very pure raw materials, and then they are subjected to compacting pressures above those used in conventional ceramic materials, receiving a heat treatment afterwards. The result is more homogeneous, very dense, glazed, and more resistant than conventional ceramics. Besides being less porous, it is less susceptible to stains and has a very low water absorption index. Its durability is really great because of this, and this turns the porcelain tile suitable for places with high traffic demands such as airports, stations and shopping centers. The fundamental difference between porcelain tiles and ceramic tiles lies in the technology that exists in the manufacture of these products. The porcelain tile implies a more technologically complex process and a more controlled result than ordinary ceramics. It is made with a mixture of porcelain and several minerals, which undergo a heating process of over 1200 degrees Celsius.

What is water absorption?

The water absorption of a tile is related to its mechanical strength. The lower the absorption, the less the space that is between the particles for the water to penetrate the tile. This feature ensures: - High mechanical resistance, which permits it to withstand heavy loads, even considering it has lower weight and thickness than natural stones. - High frost resistance, therefore it can be used in very cold climates. - Very low expansion by hydration, they do not come lose if they are settled correctly. Ceramic tiles are classified regarding the group of absorption according to the NBR 13817/1997 standard. Type of Product Groups of Water Absorption Water absorption (%) Porcelain BIa <0.5 Gres BIb 0.5 <AA <3.0 Semigres BIIa 3.0 <AA <6.0 Semi-porous BIIb 6.0 <AA <10.0 Porous BIII > 10.0

What is Pei and Class of use?

The Pei (Porcelain Enamel Institute) is an acronym that represents the name of the institute that regulated the standards for the classification of the resistance to surface abrasion. The Pei is used to classify the area where the floor and wall tiles will be used. On the other hand, the class use, which is also related to abrasion, classifies the glazed porcelain. The Class of use of a product is related to its wear abrasion, i.e. the wear caused by the friction of shoes or tires in contact with abrasive dirt on the glazed surface of the tile. It is one of the most important features when buying a product. It is important to choose according to the place of use, because the choice of the appropriate class use can provide beauty and longer life to the covering. Otherwise, an inappropriate choice can condemn a high quality product to a very short life. Class of use 1: Use on Walls Class of use 2: Use in bathrooms and residential bedrooms Class of use 3: Use in areas that do not have access to the outside. Class of use 4: Use in all residential areas Class of use 5: Use in all residential and commercial areas with medium traffic Class of use 6: Use in all residential and commercial areas with heavy traffic.

Is there glazed and non-glazed porcelain?

Yes. There are two types: the glazed porcelain, which is the one that receives a layer of glaze on the surface, and the technical porcelain or full body porcelain, which is the one when the surface finish of the product is done directly on its body.

What do bold and ret mean?

Bold and Ret are different types of finishes that give the final dimensions of the tiles. After being fired, Ret finished products undergo a cutting process on their sides made by diamond wheels that ensure fine and precise dimensions, allowing for the total alignment during the installation. A Bold product is one that has not gone through the cutting wheels process, so the sides are curved. These products should always be installed with larger joints when compared to the rectified ones.

Are the products different for each area of use?

When choosing a covering, also consider the characteristics of the place where it will be seated, such as internal or external area, with heavy traffic, on a flat surface, uphill, downhill, or requiring frequent cleaning. These factors will prevent possible future problems like difficulty in cleaning and safety, for example.

Where should I use non-slip products?

Non-slip products are suitable for outdoor areas exposed to rain and humidity, or those that need increased safety when walking. However, the rougher surface of the non-slip products, which prevents slipping, also ends up influencing in their cleaning. Ideally, use scouring powder and a stiff bristle brush to wash this type of flooring. It is a slightly heavier cleaning, so the non-slip porcelain tiles are not suitable for locations where cleaning needs to be frequent.

Can we use porcelain tiles on walls?

Yes. In addition to the specific wall coverings, porcelain tiles can also be applied at this location.

Which products are recommended for the barbecue area?

To cover the grill on the outside we can use any porcelain tile. In contact with the fire, the best choice is the yellow firebricks made with high-alumina, separated from the grill structure by a rockwool insulating board. The adhesive mortars for the barbecue area should be elastic, as the AC-2 or AC-3 type. The grill must be isolated with an elastic union joint/de-solidarisation (flexible polyurethane on a cellular billet, for example) Thus, the grill area heats and cools everything that is necessary without affecting the environment and without touching the area against it.

What care needs to be taken with satin products?

Cleaning satin products is simple. This should be done with water and a mild detergent, rubbing lightly with a cloth or sponge. One important caution: it is not recommended to use epoxy grout with this covering. The process of applying or removing the excess from this product can leave the pieces with a shine on the sides, forming a frame.