How can we differentiate between glazed ceramic tiles that are waterproof and non-waterproof?    1) First, take a piece of dry ceramic tile and wipe both the front and back surfaces clean.    2) Then, take a cup of water or red ink and pour it onto the back surface of the tile. Pour it slowly, making sure not to cover the whole back of tile to facilitate clear observation.    3) Allow the tile to absorb the water for a while,    4) and finally, turn back the tile and check for any watermark. If there is a watermark, it means that the tile is non-waterproof. If there is no watermark, it means that the tile is waterproof.    Please check the following video, that will be more easy to understand. This kind interior wall tiles are used for bathroom and kitchen. If can accept price, we will suggest you to take waterproof finish.    How do you separate them? Any ideas, please contact us. Thank you!

Difference between porcelain tiles and ceramic tiles? 1, Different water absorption     In the water absorption rate, porcelain tiles are generally within 0.5%, and ceramic tiles are more than 1%, such as range 1-3% vitrified tile, 3-6% or 6%-10% rustic tile and so on. 2，Different structure     Porcelain tile is made from porcelain clay and is fired at extremely high temperatures. It is a very dense tile and virtually does not absorb water. Porcelain is the hardest and strongest commercial tile available. The average PEI rating of porcelain is 5.     Ceramic tiles are any kiln-fired clay-based tiles. it is made from various red and white clays. It does not need to be fired at as high a temperature, and is not as durable or moisture resistant as porcelain. The average PEI range of ceramic tiles is 0-3.      Ceramic tiles structure will be rough, knocking, the sound will be low, and porcelain tiles are very delicate, have a good gloss, knocking will issue a clear and pleasant sound. 3，Different hardness and strength     The hardness and strength of porcelain tiles are better, stronger and wear-resistant than ceramic tiles.     Please check the following datas as main difference.     Welcome you to contact us. Thank you!