THINGS TO CHECK BEFORE BUYING A TILE

✅ Things to Check for Tile Durability

Tile durability depends on its material, hardness, thickness, water absorption, and how it performs under impact, pressure, and wear. Below are the most important factors to evaluate before choosing a tile.

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1. Tile Material Type

Different tile materials have different durability levels:

• Porcelain – Extremely durable, dense, low absorption

• Ceramic – Less dense but good for light/medium use

• Natural stone (marble, granite, travertine) – Durable but requires sealing

• Glass – Strong but best for walls, not floors

• Cement tile – Very durable but porous; needs sealing

Best for durability: Porcelain and granite.

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2. PEI Rating (Wear Rating)

The Porcelain Enamel Institute (PEI) rating measures surface hardness and abrasion resistance.

• PEI 1 – Walls only

• PEI 2 – Light foot traffic

• PEI 3 – Medium foot traffic

• PEI 4 – Heavy foot traffic

• PEI 5 – Commercial, high-traffic areas

Choose PEI 4 or 5 for floors that get heavy use.

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3. Mohs Hardness

Measures scratch resistance (scale 1–10).

• Porcelain tile: typically 7+

• Stone tile: 3–6 depending on the type

Higher Mohs rating = better scratch resistance.

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4. Water Absorption Rate

Important for bathrooms, kitchens, outdoor areas.

• Porcelain: ≤ 0.5% (best)

• Ceramic: 3–7%

• Stone: varies; many types absorb moisture unless sealed

Lower absorption = better durability and freeze-thaw resistance.

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5. Breaking Strength

Measured in pounds-force (lbf).
Indicates how much weight the tile can withstand before breaking.

• Floor tiles should typically have ≥ 250–400 lbf or more, depending on area.

Higher breaking strength = better for floors and heavy-use areas.

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6. Tile Thickness

Thicker tiles generally handle impact and weight better.

Typical thicknesses:

• Wall tile: 6–8 mm

• Floor tile: 8–12 mm

• Outdoor porcelain pavers: 20 mm

If it’s going on the floor, avoid thin tiles.

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7. COF / DCOF (Slip Resistance)

Not directly durability—but affects safety and longevity in wet areas.
A higher coefficient of friction (COF) or DCOF makes the tile more slip-resistant.

• Indoor floors (wet): DCOF ≥ 0.42

• Outdoor areas: DCOF ≥ 0.60

Slip-resistant tiles wear better in high-moisture spaces.

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8. Glaze Quality (for Glazed Tiles)

Check the glaze for:

• Even thickness

• Smooth finish

• No pinholes or weak spots

Higher-quality glaze = better stain resistance and longer life.

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9. Density & Porosity

Denser tiles are:

• Stronger

• Less prone to cracking

• Less absorbent

Porcelain is very dense; ceramic is less dense.

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10. Edge Type

Pressed edges vs. rectified edges:

• Rectified tiles (machine-cut) are more precise and tend to be denser/higher quality.

• Pressed tiles may vary slightly in dimension.

Not a strict durability test, but rectified tiles often imply higher manufacturing quality.

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11. Surface Finish

Some finishes are more durable than others:

• Matte: best scratch resistance, hides wear

• Polished: beautiful but easier to scratch

• Textured: best for outdoor and wet areas

Choose a finish based on your traffic conditions.

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12. Suitability Rating

Manufacturers often label tiles as:

• Wall tile only

• Indoor floor

• Outdoor floor

• Shower floor

• Commercial use

If a tile is not floor-rated, it’s not durable enough for standing weight.

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13. Manufacturer Standards & Certifications

Check for:

• ISO certification

• ASTM testing results (breaking strength, water absorption, etc.)

• Factory quality labels

• Warranty information

Good brands provide testing data—cheap tiles often don't.

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14. Impact & Chip Resistance

Ask about:

• Surface chip resistance

• Edge chip resistance

• Resistance to falling objects (important for kitchens)

Porcelain performs best here.

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🧪 Quick Tile Durability Test at Home (Simple Checks)

You can test samples yourself:

1. Coin Scratch Test

Scratch the surface lightly with a coin.
If it marks easily → low durability.

2. Water Drop Test

Put a few drops of water on the tile:

• If it absorbs fast → not good for wet areas.

• If it beads → dense and durable.

3. Weight / Pressure Test

Stand or step hard on the tile sample.
If it flexes or cracks → not suitable for floors.

4. Edge Tap Test

Tap the tile edge with another tile.
A hollow sound often means lower density.

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⭐ Conclusion: What Matters Most?

If you want the most durable tile, prioritize:

✔ Porcelain
✔ PEI 4–5
✔ Low water absorption (< 0.5%)
✔ High breaking strength
✔ Thicker tiles (8–10+ mm)
✔ Matte or textured finish
✔ Good manufacturing standards