ceramic tile selection method 1. Look at the appearance. The color of ceramic tiles should be uniform, the surface smoothness and flatness should be good, the periphery should be regular, and the pattern should be complete. Take out four or five pieces from a box to see if there are any defects such as color difference, deformation, lack of edges and corners.
ceramic tile selection method 2. Listen to the sound. Tap with a hard object, the clearer the sound, the higher the degree of porcelain and the better the quality. You can also hold a corner of the tile between your left thumb, forefinger and middle finger, and hang it down easily. Tap the middle and lower part of the tile with your right forefinger, if the sound is clear and pleasant, it will be the top grade, if the sound is dull and stagnant, it will be the bottom grade. (Now, many tiles with different brands can sound crisp, which needs to be distinguished professionally.)
Tile selection method III. Drip test. You can drop water on the back of the tile to see the speed of infiltration after the water is dispersed. Generally speaking, the slower the water absorption, the greater the density of the tile; On the contrary, the faster the water absorption, the sparse density, and its internal quality is better than the former. (The test can't be measured by surface smearing. The smooth surface without water absorption is probably due to the fact that there are more antifouling agents and waxes on the surface, so the brick without water absorption will be slippery and unsafe.)
Tile selection method IV. Size. The higher the accuracy of the side length of ceramic tile, the better the effect after paving. Buying high-quality ceramic tile is not only easy to construct, but also saves working hours and accessories. Use a tape measure to measure whether there is any difference in the size and periphery of each tile, and the one with high accuracy is the top grade.
ceramic tile selection method 5. Observe the hardness. Ceramic tiles are top-grade with good hardness, strong toughness and non-fragile. Scratch each other with the edges and corners of the fragments of ceramic tiles to see whether the broken fragments are fine or loose, hard, brittle or soft, leaving scratches or scattered powder. If the former is the top grade, the latter is the poor quality.