Because porcelain is pressed under higher pressure than other tiles, in the range of 6,000 pounds per square inch, it is more dense than ceramic tile. It is also fired at a temperature of 2200° F, while ceramic tile would be fired at 1800° F, providing a much lower rate of absorption. The international standard for porcelain tile states that for tile to qualify as Porcelain, it must have water absorption of 0.5% or less. This tile typically has an absorption rate or less than 0.1%.
The water absorption rate for porcelain tile makes it suitable for interior and exterior applications in all climates. The water absorption rate of ceramic tile is usually greater than 3%, which means that it is not suitable for exterior applications.
Using applicable ASTM tests, Porcelain Stone has a breaking strength of 390-400 pounds versus approximately 250 for regular ceramic tile. The Compressive Strength of the tiles range from 36,000 to 38,000 psi. This product have an absorption rate that allows them to be rated as frost proof, not frost resistant.
Porcelain Stone Eco-Cycle contains a minimum 40% recycled content, and Color Blox EC contains 20% recycled content.