Porcelain vs Ceramic vs Glazed Vitrified Tiles: A Buyer’s Guide

Start with the body, then the surface

Every tile has two layers of decision. The body is the pressed and fired clay mix underneath; its density decides water absorption, strength and frost behaviour. The surface is the glaze, digital print and finish on top; it decides appearance, wear resistance, cleanability and slip behaviour.

Trade names often blur the two. “Marble-look porcelain”, “PGVT” and “ceramic floor tile” each describe a mix of body and surface, and the same name can mean different things in different markets. When you compare ranges from different suppliers, separate the questions: what is the body, and how was it tested? and what is the surface, and how will it perform where it is installed?

Water absorption: the classifier that matters

ISO 13006, the international product standard for ceramic tiles, groups tiles by how they are shaped (extruded or dry-pressed) and by water absorption, measured using methods in the ISO 10545 series. Most tiles exported from India are dry-pressed, so the “B” groups are the ones you will see on data sheets.

In North America, ANSI A137.1 defines porcelain tile as tile with water absorption of 0.5% or less, tested to ASTM C373. Verify the porcelain definition and test method that apply in each destination market

Absorption matters beyond the label. Low-absorption bodies are generally stronger and more stain-resistant, and are a prerequisite for frost resistance, although frost resistance is tested separately. They also bond differently: dense porcelain and vitrified tiles usually need an improved, polymer-modified adhesive rather than a basic one. Follow the adhesive manufacturer’s guidance for the exact tile and substrate.

Ceramic, porcelain and glazed vitrified: what each label usually means

Ceramic tiles

Ceramic wall tiles have a porous red or white body, typically in the BIII group. They are lighter, easier to cut and drill, and the look is carried entirely by the glaze. They suit kitchens, bathrooms and feature walls, and some ranges are rated for light-traffic floors. They are not normally suitable where tiles may freeze while wet. See our ceramic wall tile ranges.

Porcelain tiles

Porcelain tiles are dense, BIa-group tiles. Glazed porcelain carries its design in a glaze layer, so a chip shows a body of a different colour. Unglazed, full-body or through-body porcelain has colour running through the thickness, so chips and wear are less visible; it is often chosen for commercial floors and exteriors. Browse porcelain tiles.

Glazed vitrified (GVT) and polished glazed vitrified (PGVT)

In India, “vitrified” describes a body fired to very low absorption. A GVT has a digitally printed design applied in or under a glaze on that body; a PGVT is glazed and then polished to a high gloss. You will also meet double-charge tiles (two layers of coloured powder pressed together, then polished), full-body vitrified tiles, and soluble-salt or nano-polished tiles (colour absorbed into the surface, with a sealing treatment on the polished face).

These are trade names, not standard classifications. Many GVT ranges test within the BIa group and may be sold as porcelain in some markets; others may not. Verify: a GVT may be marketed as porcelain only if its tested absorption meets the destination market’s definition Ask for the absorption test result for the exact product before you print “porcelain” on a carton or price list. See our glazed vitrified tile ranges.

Side-by-side comparison

Formats are worth a separate conversation. Large formats and slabs (for example 800 × 1600 mm and above) need flatter substrates, more careful handling and often different packing. See large-format tiles and our export packing guide.

Finishes and surface performance

Finish names

Common finishes include matt, satin, glossy, polished (full polish, as on PGVT), lappato or semi-polished (partly polished, so high points shine while low points stay matt), carving or structured (relief textures created with digital glazes and moulds), and grip, anti-slip or outdoor finishes. Finish names are not standardised; one factory’s “satin” can be another’s “soft matt”, so judge the physical sample.

Wear resistance

For glazed floor tiles, surface abrasion is tested to ISO 10545-7 and reported as a class, widely known as the PEI rating (0 to 5). A higher class indicates better resistance to visible wear in that test. Unglazed tiles are tested for deep abrasion instead (ISO 10545-6). Verify the abrasion class required for each application in your market High-gloss and polished faces show scratches sooner whatever the class, so think about grit at entrances.

Slip resistance differs by market

• Germany and much of Europe: ramp-test R-ratings (R9 to R13), now tested under EN 16165 Annex B, which replaced DIN 51130 in Germany.
• UK and Australia: pendulum test values (PTV) are widely used.
• North America: wet DCOF to ANSI A326.3; 0.42 or above is the benchmark for level interior spaces expected to be walked on when wet. It is not a guarantee of suitability for every project.

Verify which slip test and minimum value your market, project type or specifier requires The same finish name can test differently from one factory to another, so ask for the result for the exact product.

Outdoor use

For exteriors, ask for frost resistance tested to ISO 10545-12 where freezing occurs, an exterior-appropriate slip result and the right thickness. Some factories offer thicker outdoor porcelain for raised or paved installations. Verify outdoor thicknesses and frost-test results with the supplier for each product See outdoor tiles.

How to specify for your market

Before you shortlist designs, write down what the tile must do. These points make supplier answers comparable:

• Application: wall or floor, interior or exterior, residential or commercial, wet or dry area.
• Required absorption group and the test method your market recognises.
• Slip test and class or value your market uses, and where it applies.
• Abrasion class for glazed floor tiles; deep abrasion for unglazed.
• Frost resistance for exteriors in cold climates.
• Size, thickness, edge (rectified or not) and acceptable shade variation.
• Any market marking, such as CE marking against EN 14411 for the EU. Verify market marking and declaration requirements with your customs broker or notified body

Then carry these requirements into your tile RFQ and check them again at the sample stage.