Porcelain Tiles: Meaning, Composition and Application Areas

Porcelain tiles are dense ceramic tiles made from refined clay, feldspar and quartz, pressed and fired at about 1,200°C. The heat turns the body almost glass-like, so a porcelain tile soaks up 0.5% of its weight in water or less.

That low absorption makes porcelain tiles hard and stain-resistant. They work on floors, walls, wet areas and outdoor spaces.

What Are Porcelain Tiles?

A porcelain tile is a ceramic tile with a water absorption of 0.5% or less. That figure places it in group BIa of ISO 13006, the international standard for ceramic tiles.

In India, IS 15622:2017 is the Bureau of Indian Standards (BIS) specification for pressed ceramic tiles. IS 15622 uses the same absorption-based groups.

• Water absorption: the share of its own weight a tile soaks up. Lower means denser and stronger.
• Vitrification: the stage of firing where the clay body fuses and turns glass-like.
• Body: the fired clay under any print or glaze.

What Are Porcelain Tiles Made Of?

Porcelain tiles are made of three main raw materials: clay, feldspar and quartz. Each one has a job in the fired tile.

The making process follows six broad steps:

1. Raw materials are ground with water into a fine slurry.
2. The slurry is spray-dried into a free-flowing powder.
3. Hydraulic presses compact the powder into tiles.
4. The tiles are dried, then printed or glazed if the design needs it.
5. A roller kiln fires the tiles at about 1,200°C until the body vitrifies.
6. Some tiles are polished, rectified (edges ground square) or textured.

Full-body porcelain carries its colour through the whole thickness. Glazed porcelain carries the design in a thin top layer, so a deep chip can show a different colour below.

Porcelain vs Ceramic vs Vitrified Tiles: What Is the Difference?

The main difference is water absorption. Porcelain tiles absorb 0.5% or less, vitrified tiles up to 3%, and ceramic tiles more than 3%.

"Vitrified" is a broad Indian trade term. Many tiles sold as GVT, PGVT, double charge or full body have porcelain-type bodies. Porcelain is the densest end of that family.

For walls and light-traffic rooms, see our explainer on ceramic tiles and where they suit.

Which Porcelain Types and Finishes Can You Buy?

Porcelain tiles come in three body types and five common finishes.

• Glazed porcelain (GVT, PGVT): a printed design under a glaze. Allows marble, wood and stone looks.
• Double charge: a thick decorative top layer pressed over a plain base.
• Full body: one colour and pattern through the whole tile, so wear shows less.

Popular porcelain tile designs include marble-look, wood-look, stone-look, terrazzo and concrete-look. Whites and beiges make small rooms feel larger; greys and darker tones hide dirt better.

The PEI rating (Porcelain Enamel Institute scale) grades how well a glazed surface resists wear, from class 0 to 5. Class 3 suits all home floors. PEI applies to glazed tiles, not full-body porcelain.

What Are the Pros and Cons of Porcelain Flooring?

The main advantage of porcelain tiles is very low water absorption, which brings strength, stain resistance and long life. The main drawbacks are cost, weight and harder installation.

Porcelain tiles are water-resistant, but a tiled floor is not waterproof. Water can pass through grout joints, so bathrooms and terraces still need waterproofing below the tiles.

Which Rooms and Outdoor Areas Suit Porcelain?

You can use porcelain tiles in almost every room, on floors and walls, indoors and outdoors. The finish and slip rating matter more than the tile body.

Bengaluru has no frost, so frost resistance matters less here than in colder countries. Monsoon rain, moss and garden soil are the real risks on open terraces.

For driveways that take car loads, also compare interlocking paving blocks, which are easier to lift and replace.

What Tile Size Should You Choose?

For most Indian homes, 600x600 mm or 600x1200 mm porcelain tiles suit living rooms and bedrooms. Smaller anti-skid tiles suit bathrooms and balconies, where the floor slopes to a drain.

• 300x300 and 300x600 mm: bathrooms, balconies, utility areas.
• 600x600 and 800x800 mm: bedrooms, kitchens, mid-size living rooms.
• 600x1200 and 800x1600 mm: large living rooms and corridors.
• Slabs up to 1600x3200 mm: feature walls, counters, open-plan spaces.

Larger tiles mean fewer grout lines but need a flatter base and careful handling. Rectified tiles have edges ground square after firing, which allows very thin joints.

How Much Does Porcelain Flooring Cost in Bengaluru?

Porcelain tiles cost about ₹60–200 per sq ft for most ranges, material only. Large-format slabs start from about ₹90–150 per sq ft, depending on the source. Type, size, finish and brand drive the price.

Laying tiles in Bengaluru costs about ₹35–55 per sq ft in labour, plus ₹15–30 per sq ft for tile adhesive. Large formats cost more to lay. Also budget for grout, spacers, skirting, wastage and transport.

Check pieces per box on the label; 2 is illustrative. Keep the spare box for repairs, since later batches rarely match in shade.

How Is Porcelain Installed and Maintained?

Porcelain tiles are fixed with a polymer-modified tile adhesive on a flat, cured base, then grouted. Plain cement mortar grips dense tiles poorly, which leads to hollow-sounding tiles.

1. Level and cure the base. Large formats need a flatter base than small tiles.
2. Use an IS 15477:2019 Type 2 adhesive, the class for vitrified tiles and tiles over 300x300 mm.
3. Spread with a notched trowel and back-butter large tiles for full coverage.
4. Use spacers, and leave movement joints at walls and across large floors.
5. Grout after the adhesive maker's curing time. In wet areas, consider epoxy grout, which resists stains and water.
6. Cut with a wet saw or a cutter rated for porcelain, and drill with diamond bits.

Open a few boxes before the tiler starts. Reject the batch if you see:

• Different shade or batch numbers on the boxes
• Warped tiles that rock on a flat surface
• Chipped corners or cracked edges
• Pinholes, print smudges or glaze defects
• Size differences between tiles in one box

Porcelain tiles need little care. Sweep or dust-mop daily and damp-mop weekly with a pH-neutral cleaner.

• Avoid acid cleaners; they eat cement grout.
• Avoid abrasive pads on polished tiles; they leave fine scratches.
• Deep scratches on polished tiles are permanent; replace the tile from your spare box.
• Seal unglazed or polished porcelain only if the maker's guidance asks for it.