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Is there any truth in the matter that concrete tiles absorb water and thereby “double” in weight?

April 26, 2017concrete tiles Truth water weight

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Is there any truth in the matter that concrete tiles absorb water and thereby “double” in weight?

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This is just a myth. In practice the absorption of water by capillary action during periods of heavy rain would increase their weight by just around 5 per cent. But this weight increase is unlikely to cause any doubling or roof failure.