Scratch the tile surface with a sharp object. If scratches appear, it indicates that the glaze is not durable and may wear off over time, making the tile harder to clean once the glaze is damaged. A high-quality tile should have clear and natural color patterns, showing good porcelain quality. If the colors look dull or unclear, it may suggest lower quality. When buying, check the surface closely from one meter away with your naked eye. If you see pinholes, it means the glaze hasn’t fully fused, which can lead to dirt accumulation over time.
1. Place a few drops of tea or water on the back of the tile. After a few minutes, observe how much the liquid is absorbed. If the water remains as droplets and doesn’t spread, it means the tile has low water absorption, which is a sign of better quality.
2. Tap the tile gently with your fingers or a small object. A crisp, ringing sound indicates a denser and harder tile, which is usually of higher quality. A dull sound may mean the tile is less dense and more prone to damage.
3. Use a sharp object to scratch the tile’s surface. If visible scratches appear, it shows that the glaze is weak and may wear off easily, making cleaning more difficult after polishing.
4. Check the color and pattern of the tile. If they are clear, natural, and well-defined, it suggests a high-quality porcelain tile. If the colors look blurred or uneven, it could indicate lower quality.
5. When purchasing, inspect the tile’s surface for pinholes from a distance of about one meter. If you spot any, it means the glaze wasn’t fully fused during manufacturing, which can lead to dirt buildup and reduced durability.
6. Examine the edges of the tile to check for warping. A straight edge shows better craftsmanship. If the tile is warped, it may affect its stability and performance when installed, especially in large areas.
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