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Liquid applied multi-purpose waterproofing coating: KÖSTER 21

Standing for “waterproofing in the 21st century” the product´s name expresses the combination of many advantages from different waterproofing materials and its applicability in a very broad range of application areas.

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A high quality, fast setting mineral underlayment that hardens tension free to a smooth, level surface ready to receive subsequent flooring systems. It hardens within hours to a smooth, strong, and multifunctional leveling layer. KÖSTER SL is easy to mix and spread, is pour- and pumpable, and is self leveling and highly flowable during application. KÖSTER SL can be used for area covering from 2 to 25 mm and can fill depressions up to 25 mm. KÖSTER SL hardens crack free and has a high surface strength and a very good adhesion to the substrate.



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