Silicone Impregnation Powders

Silsan® silicone impregnating powders, developed by Graf Chemie, are silane/siloxane-based additives designed for incorporation directly into dry-mix building materials. Unlike liquid water repellents that must be added during processing, these powders are blended into plasters, mortars, tile adhesives, or fillers during production, ensuring uniform distribution and reducing processing errors.

Once mixed with water and applied, Silsan® powders provide excellent hydrophobic protection, significantly lowering water absorption while maintaining vapor permeability. The result is longer service life, reduced energy loss in damp conditions, and durable resistance against algae, mould, frost damage, and efflorescence. In addition to water repellency, they enhance the beading effect on surfaces without affecting appearance or breathability.

Ideal for cement- and lime-based plasters, polymer-bound dry-mix coatings, tile adhesives, joint fillers, and even cement paints, Silsan® powders are the efficient, sustainable solution for high-performance façade and construction systems. By combining technical reliability with ease of processing, they help manufacturers deliver products that meet modern building protection standards while ensuring economic efficiency.