This is where porcelain tile is generally categorized Reflecting the density of the tile body, ceramic tiles are also classified by their water absorption rate apart from the resistance to wear and tear. Tiles with low water absorption, or below 0.5%, are categorised as porcelain tiles Ceramic floor tiles have a water absorption rate of 3 to 10%, whereas ceramic wall tiles have a water absorption rate of more than 10% and are suitable specifically for walls. This is tested by first, weighing fired tile. The ‘b1a’ designation indicates impervious tiles, which have the lowest water absorption rate
They are extremely dense and resistant to water, making them perfect for any environment, especially those with high moisture exposure. Tiles exhibiting 0.5% or less Tiles exhibiting more than 7.0% Porcelain tile, however, is considered impervious, meaning that it absorbs less than 0.5% In normal, everyday use, most ceramic tile will not be affected by its absorption rating because it has a glaze covering its clay body. In general, porcelain tiles absorb very little water—less than 0.5%
Porcelain tile has a water absorption rate of less than 0.5% and falls under the “impervious” category, making it incredibly resistant to water and a preferred choice for wet areas.
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