SUNOIT™ Silicone Water Repellents: Building a Green, Long-Lasting Protective Barrier

Modern buildings demand long-term durability and self-cleaning. SUNOIT supplies high-performance silanes, silicone oils, and silicone resins for the building protection market, delivering excellent water repellency, breathability, and stain resistance for concrete, stone, insulation systems, and exterior coatings.

Silanes (e.g., isobutyltriethoxysilane) deeply penetrate concrete capillaries and chemically bond with the substrate to form a lasting hydrophobic network. This effectively blocks water, chlorides, and carbon dioxide intrusion, slowing rebar corrosion—ideal for bridges, marine structures, and highway protection. They also preserve substrate breathability, resist freeze-thaw and efflorescence without altering appearance, making them perfect for historic masonry restoration.

Aqueous silicone emulsions are environmental friendly and easy to use, When added to façade coatings or textured finishes, they create a water-beading effect that washes away dirt for self-cleaning. In AAC panels and insulation boards, they build an even hydrophobic film that stops water uptake without blocking vapor diffusion. For stone backside treatment, they prevent mortar moisture and alkali penetration, avoiding stains and yellowing.

Silicone resins form highly crosslinked, weather-resistant films. As clear topcoats or color bases, they provide outstanding gloss and color retention against UV and acid rain. On ceramic or cement roof tiles, they create a hard, transparent protective layer that boosts water repellency and algae resistance, keeping roofs attractive long-term.

SUNOIT offers a complete range from high-purity monomer silanes, multi-viscosity silicone oils to custom silicone resins—low VOC, compatible with impregnation, spray, and admixture application—delivering complete silicone solutions for building protection.