Technical datasheet

BYK® -1693 SD

Supplied byBYK- Last Updated on Aug 29, 2025

BYK® -1693 SD by BYK is a VOC-, mineral oil-, PFAS-, and silicone-free powder defoamer. It is blend of polyether and vegetable oils, adsorbed on an inorganic carrier.
  • It offers strong and long-lasting defoaming performance over the entire application window.
  • It reduces air void content and enhances both the workability of fresh mortar and the physical properties of the hardened system.
  • It has good compatibility with various binder systems.
  • BYK® -1693 SD contains 54% bio-based organic carbon content.
  • It is used for aqueous mineral- and dispersion-bound building material formulations, especially for hybrid systems.
  • It is used in waterproofing membranes (polymer cement mortar), concrete repair mortar (polymer cement concrete), skim coats, leveling compounds (self-leveling underlayment and self-leveling overlay), and screeds applications.
  • Recommended use level is 0.05-0.5%.
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BYK® -1693 SD properties

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