Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Wacker SILRES BS 3003 Silane/Siloxane

Wacker SILRES BS 3003 is a silane/siloxane-based water-repellent impregnation agent from Wacker’s SILRES BS series, designed for deep penetration into mineral substrates like concrete and masonry. It forms hydrophobic, breathable protective layers without altering appearance, offering durable resistance to water, frost, and salts while maintaining substrate vapor permeability.
  • wacker silres bs 3003 silane siloxane_fd4cf571
  • wacker silres bs 3003 silane siloxane_fd4cf571

Features Of Wacker SILRES BS 3003 Silane/Siloxane

  1. Hydrophobic and oleophobic surface protection for mineral substrates.

  2. Reactive silane functionality enables covalent bonding to silica, concrete, and masonry.

  3. Low-VOC, solvent-based formulation compliant with major regional environmental regulations.

  4. Excellent resistance to UV radiation, alkali, and weathering without film formation.

  5. Penetrating treatment that preserves substrate breathability and natural appearance.

Typical Applications Of Wacker SILRES BS 3003 Silane/Siloxane

  1. Water repellent treatment for concrete façades and precast elements.

  2. Protective impregnation for natural stone, limestone, and sandstone cladding.

  3. Surface protection of mortar joints and grouts in architectural masonry.

  4. Weatherproofing agent for restoration and conservation of historic brickwork.

  5. Functional additive in high-performance cementitious coatings and renders.

Specifications Of Wacker SILRES BS 3003 Silane/Siloxane

Chemical TypeAlkylalkoxysilane / siloxane hybrid
Product FormLiquid concentrate
AppearanceClear, colorless to pale yellow liquid
Solvent BaseAromatic hydrocarbon mixture
Primary ApplicationsImpregnation of porous mineral building materials
Key FeaturesNon-film-forming, vapor-permeable, reactive penetration
BenefitsLong-term water repellency without discoloration or gloss change
Storage Stability≥12 months in original sealed container at 5–25 °C


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