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Why is it such an advantage that Si-Rex03 is permeable to water vapor yet at the same time water-repellent (beading effect)?

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Why is it such an advantage that Si-Rex03 is permeable to water vapor yet at the same time water-repellent (beading effect)?

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Because the coating is permeable to water vapor the substrate is able to breathe; the beading effect prevents water absorption. The combination of these two properties makes silicone resin emulsion paint the superior coating system for concrete and masonry facades with added benefits of extremely high durability and dirt repellent effect.

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