Porcelain Tiles vs Vitrified Tiles: The Real Difference & Which to Choose

Porcelain tiles are defined by ISO 13006 as fully vitrified ceramic tiles with water absorption of 0.5% or less. In India, the term “vitrified tile” is commonly used for low-water-absorption tiles. Check the declared water absorption and classification rather than relying on the product name alone.

Walk into a tile showroom and you may be shown a “porcelain” range at one counter and a “vitrified” range at the next, often at different prices. Search online and it gets more confusing: some guides say porcelain absorbs less water, others say vitrified tiles do, and a few contradict themselves on the same page.

This guide explains the difference between porcelain and vitrified tiles using the standards that actually define them. It covers why the labels became confusing, which properties really change from one tile to the next, and how to choose the right tile for each part of your home.

Are Porcelain and Vitrified Tiles the Same?

Porcelain and vitrified tiles can overlap in their technical classification, but the product name alone does not confirm their properties. Under ISO 13006, porcelain tiles have water absorption of 0.5% or less. Check the declared classification and product specifications when comparing tiles.

What Is a Porcelain Tile?

Under ISO 13006, porcelain tiles are classified in Group BIa for dry-pressed tiles, with water absorption of 0.5% or less.

North America uses the same threshold: the American standard ANSI A137.1 defines porcelain tile as ceramic tile with water absorption of 0.5% or less, tested to ASTM C373.

Porcelain tiles can be glazed or unglazed, and both can be polished.

What Is a Vitrified Tile?

“Vitrified” describes what happens in the kiln. During firing, fluxing minerals in the tile body — mainly feldspar — melt and form a glassy phase that fills the pores between the other particles. The more completely the pores are sealed, the lower the tile’s water absorption. This is why “vitrified porcelain” is not a separate product: porcelain is, by definition, a fully vitrified tile.

In India, “vitrified tile” is commonly used as a trade term for tiles with low water absorption. IS 15622:2017 classifies pressed ceramic tiles into groups based on water absorption and other technical characteristics. Its Group BIa has a water-absorption limit of 0.08% or less, while ISO 13006 defines Group BIa for dry-pressed tiles at 0.5% or less. Check the applicable standard and the manufacturer’s declared specifications rather than relying on the trade name alone.

Where Ceramic Tiles Fit?

Ceramic tiles are classified into groups according to their manufacturing method and water absorption under ISO 13006. For dry-pressed tiles, the following groups describe the water-absorption ranges. These classifications help compare tile bodies, but the group name alone does not determine the tile’s suitability for a particular application.

Note for Indian buyers: IS 15622:2017 is the Indian standard for pressed ceramic tiles. When comparing products sold in India, check the classification and declared water-absorption value against the applicable standard and the manufacturer’s product documentation. Do not assume that similarly named groups under different standards have identical limits.

Why Do Sources Disagree About Porcelain and Vitrified Tiles?

The confusion comes from labels, not from the material. If you have read several comparison articles, you will have seen them contradict each other. Comparison articles sometimes describe porcelain and vitrified tiles as different products, particularly when discussing water absorption, firing, price and lifespan. These differences can be confusing because trade names, surface finishes and technical classifications are not always clearly distinguished.

Three things explain how this happened:

1. Two names for one class. International standards say “porcelain”. The Indian industry built its category around “vitrified”. When imported porcelain ranges appeared alongside local vitrified ranges, the two words began to be presented as competing products.
2. Range names used as positioning. Some brands use “porcelain” as the name of particular collections — wall elevation tiles or stone-look slabs, for example — which makes it look like a different material.
3. Surface type confused with body type. A glazed vitrified tile, a double charge tile and an unglazed full-body tile can all have a Group BIa body, yet they look, wear and cost differently. Those differences are real, but they come from the surface, not from “porcelain versus vitrified”.

The practical rule: ignore the label and check the declared water absorption and the standard the tile is tested to.

Porcelain vs Vitrified Tiles: Comparison Table

Porcelain and vitrified tiles share the same core properties when both are declared in Group BIa. The table compares the two terms as they are used in standards and in the Indian market. Where a property depends on the specific product rather than the category, the last column says what decides it.

The Difference Between Porcelain and Vitrified Tiles That Actually Matters

When two tiles share a Group BIa body, the real difference is how the surface is made. That is where most differences in appearance, wear and price come from — and it applies whether the box says porcelain or vitrified.

You can read more about each format in our guide to the types of vitrified tiles.

Glazed Porcelain vs Glazed Vitrified Tiles

A glazed porcelain tile and a glazed vitrified tile (GVT) are built the same way: a fired glaze on a low-absorption body. Compare them on the glaze’s wear rating (PEI class), the finish and the slip value, not on the name.

Double Charge Vitrified Tiles vs Porcelain Tiles

This comparison mixes two different things. “Double charge” is a surface technology; “porcelain” is a body classification. A double charge vitrified tile with a Group BIa body is a porcelain tile in international terms. The useful comparison is double charge against GVT or full body.

Performance Properties Explained

Water absorption, strength, hardness and slip resistance measure four different things. A tile can score well on one and poorly on another, so check each one against the room you are tiling.

Water Absorption

Water absorption is the property used to define porcelain tiles. Under ISO 13006, porcelain tiles have water absorption of 0.5% or less. When comparing porcelain and vitrified tiles, check the declared water absorption and classification on the product data sheet.

Low absorption does not make a floor waterproof. In bathrooms and on terraces, water gets through grout joints and around drains, so the waterproofing beneath the tiles still matters.

Strength

Strength indicates how well a tile withstands loads before it breaks. Performance depends on factors such as tile thickness, size, support and installation quality. Check the manufacturer’s declared specifications to determine whether a tile is suitable for its intended application.

Scratch and Wear Resistance

Hardness and wear resistance are not the same thing. Scratch hardness (Mohs) tells you how easily a surface scratches. Wear resistance is measured in two different ways depending on the surface: the PEI class applies only to glazed tiles, while unglazed tiles are tested for deep abrasion in cubic millimetres. If a seller quotes a PEI rating for an unglazed full-body tile, ask for the deep abrasion result instead.

Stain Resistance

Glazed surfaces resist staining well. Polished unglazed tiles are different: polishing opens microscopic pores on the surface, so these tiles can stain even though their body absorbs very little water. Some are factory-treated to close those pores — ask the seller whether yours is.

Slip Resistance

Slip resistance depends on the tile’s surface finish and the conditions in which it is used. For bathrooms, kitchens, balconies and other areas that may become wet, choose a finish suitable for the intended application. Check the manufacturer’s product specifications when comparing tiles.

Porcelain or Vitrified: Which Is Better for Each Area?

Neither label is better in itself. For each area, choose the surface type, finish and declared values that suit how the space is used.

For kitchens, our guide to kitchen floor tiles covers finishes, slip ratings and sizes in more detail. For living areas, see vitrified floor tiles.

For outdoor installations in areas exposed to freezing temperatures, check the tile’s declared frost resistance and suitability for the intended conditions.

Installation and Maintenance

Installation and maintenance depend on the tile’s properties, surface finish, substrate and intended application. Follow the tile and installation-product manufacturers’ recommendations.

Installation

• Use a tile adhesive suitable for the tile, substrate and installation conditions, following the tile and adhesive manufacturers’ recommendations. Dense, low-absorption tiles require an appropriate bonding system. Large-format tiles need a suitably flat substrate, adequate adhesive coverage and careful handling. Provide movement joints as required by the installation design and use grout suitable for the application.
• Cut and drill with diamond blades and bits.

Maintenance

• Sweep regularly and mop with a pH-neutral cleaner.
• Avoid harsh acid cleaners, which can damage grout and some surface finishes.
• In kitchens and bathrooms, a stain-resistant grout or grout sealer keeps joints cleaner. Sealing the tiles themselves is covered in the FAQs below.

Limitations to Know Before You Buy

Potential limitations depend on the tile’s surface finish, thickness, installation and intended application. Consider the following points before buying.

• They feel hard and cool underfoot.
• Glossy and polished finishes are slippery when wet.
• Cutting and drilling requirements depend on the tile’s material, thickness and construction. Use suitable tools and follow the manufacturer’s recommendations.
• They need the right adhesive; poor installation leads to hollow or loose tiles.
• A chipped tile is hard to repair invisibly, so keep spare tiles from the same batch.
• Large-format tiles are heavy and need skilled laying.

For a fuller list, read our guide to the benefits and drawbacks of vitrified tiles.

Are Porcelain Tiles More Expensive Than Vitrified Tiles?

Not because of the name. Two tiles with the same water absorption can be priced very differently, and a “porcelain” label does not reliably mean a higher price. What actually sets the price is:

• Size and format — large slabs generally cost more to make, transport and lay.
• Thickness — thicker outdoor and heavy-duty tiles use more material.
• Surface technology — full body and double charge carry colour through more of the tile than a printed glaze or soluble salt, which can add cost.
• Design and finish — book-matched, high-gloss, carved and textured surfaces add cost.
• Grade and brand — first-quality tiles from established manufacturers cost more than commercial grades.
• Installation — adhesive, labour and cutting waste, which are similar for both labels.

When comparing quotes, compare like with like: same size, thickness, surface type and grade. For current price ranges by type, see our guide to vitrified tiles price per sq ft.

How To Check What You Are Actually Buying?

The product name alone may not tell you all the technical properties of a tile. Before buying, review the product carton and the manufacturer’s product documentation.

1. Water absorption: Check the declared water absorption value and tile classification.
2. Standard and classification: Check the applicable product standard and declared classification in the manufacturer’s documentation.
3. Product specifications: Review the declared properties and applicable test information provided by the manufacturer.
4. Surface type: Identify whether the tile is glazed, polished, double charge, full body or another type. If the construction is unclear, ask the manufacturer for clarification.
5. Wear resistance: Check the relevant wear or abrasion information for the tile’s surface type.
6. Slip resistance: For bathrooms, kitchens, balconies and outdoor areas, check the declared slip-resistance information and suitability for the intended application.
7. Breaking strength: Review the declared strength specifications for the tile size, thickness and intended use.
8. Batch, shade and calibre codes: Check the markings on the cartons and follow the manufacturer’s guidance to help maintain a consistent appearance during installation.
9. Product certification: Where certification is claimed, check the relevant certification details and verify them with the issuing organisation, where applicable.
10. Test reports: If you need further technical information, ask the manufacturer or supplier for the relevant product data sheet or test report.

Porcelain vs Vitrified Tiles: Final Recommendation

If both tiles declare water absorption of 0.5% or less, treat “porcelain vs vitrified” as a naming difference and decide on what actually affects performance:

• High-traffic floors: full body or double charge, with an abrasion result to match.
• Wet floors: a matte or textured finish with a declared slip value.
• Living areas where looks come first: GVT, PGVT or large formats — accepting that high gloss needs more care.
• Outdoors: full body or outdoor-grade tiles with a textured finish and suitable thickness.
• If a seller says porcelain is better or cheaper: ask for the water absorption, abrasion and slip figures, and compare them.

Aparna Enterprises manufactures vitrified tiles in a range of surface types and finishes. Explore the vitrified tiles range.

References

• ISO 13006:2018 — Ceramic tiles: Definitions, classification, characteristics and marking
• Bureau of Indian Standards — product manual for IS 15622:2017, pressed ceramic tiles
• ANSI — porcelain tile definition under ANSI A137.1 and ASTM C373
• TileLetter — porcelain tile sealing and maintenance
• Wacker — why tile adhesives fail on dense tiles
• Crossville — DCOF ratings and applications