When purchasing tiles, there are several important factors to consider in order to ensure you choose high-quality products that suit your needs. Here’s a detailed guide to help you make an informed decision:
1. **Water Absorption Rate**: The lower the water absorption rate of a tile, the more stable and durable it is. This makes it ideal for areas with high humidity or moisture, such as bathrooms or kitchens. A good tile will not develop black spots or mold due to moisture. To test this, place a few drops of water on the back of the tile. If the water spreads slowly and the tile feels dense, it's likely to be top-grade.
2. **Density and Hardness**: Tap the tile gently with your hand or a small object. A crisp, clear sound indicates a dense and hard tile, which is usually of higher quality. If the sound is dull or squeaky, it may mean the tile lacks proper sintering and has a weaker structure.
3. **Color and Surface Quality**: Check the color of the tile by using a hard object to scratch the glazed surface. If marks are left behind, it suggests poor quality. Also, look for any pinholes or imperfections that could trap dirt over time. A high-quality tile should have a smooth, even finish without visible flaws.
4. **Flatness**: Ensure the tile is flat by placing four tiles on a level surface and checking if they sit evenly. If they are uneven or not aligned diagonally, it may affect the overall appearance when installed.
5. **Glaze Quality**: High-gloss tiles should appear crystal clear and shiny, while matte or semi-matt glazes should feel soft and even. Scratching the surface with a hard object can reveal whether the glaze is strong enough. Poorly glazed tiles may become stained or difficult to clean over time.
6. **Product Specifications and Packaging**: Always check the packaging for the manufacturer's name, location, and trademark to avoid "three-no" (no name, no address, no quality) products. Look at the water absorption rating—lower absorption means better strength and frost resistance. For flooring or outdoor use, porcelain or enamel tiles are recommended. For interior walls, ceramic tiles with higher absorption may be suitable, but they require better resistance to cracking and staining.
7. **Friction and Wear Resistance**: If you're buying tiles for floors, pay attention to the friction coefficient and wear resistance. These factors determine how safe and long-lasting the tiles will be.
8. **Surface Appearance**: Stand about one meter away from the tile sample and check for any surface defects like chipping, cracks, or uneven glaze. At three meters away, observe the color consistency and gloss level. Tapping the tile with your hand or a hammer can also help: a metallic echo suggests a solid structure, while a dull sound may indicate internal issues.
By carefully evaluating these aspects, you can select tiles that are not only aesthetically pleasing but also durable and suitable for your specific environment.
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