Silicone Water Repellent For Concrete H-9383

H-9383 Solvent-based Silicone Water Repellent is a high-quality, versatile water repellent designed for use in both impregnating and priming mineral and highly alkaline substrates. This advanced formulation builds upon our concentrated general-purpose silicone water repellent, offering superior dilution capabilities and enhanced performance. It can be easily diluted with a range of organic solvents, including alcohols, esters, and hydrocarbons, making it adaptable to different application needs.

H-9383 is widely applied in the waterproofing of surfaces such as cement concrete, stone, wood, and other mineral materials. Its powerful water-repellent properties help protect these surfaces from moisture penetration, ensuring long-lasting durability and weather resistance.


Price: $11.50/kg        Inquiry Now

Product Features

  • Excellent penetration depth due to its small molecular weight and positive charge.
  • Suitable for waterproofing various substrates, whether alkaline or neutral, and can cure into a hydrophobic film at room temperature.
  • Non-tacky after curing.
  • Resistant to strong alkalis (unlike sodium or potassium methylsiliconate water repellents, which are not alkali-resistant).

Application Areas

  • Waterproofing various types of concrete, including aerated concrete, reinforced concrete, highways, airport runways, bridge concrete, and tunnel concrete.
  • Waterproofing cement mortar, cement fiberboards, natural stone and artificial stone, wood, and fiberboards, as well as gypsum boards, mineral, and clay surfaces. (For waterproofing wood and clay surfaces, a catalyst additive is required).
  • Anti-graffiti coating applications.
  • Other uses, such as in combination with phenolic resin for special paper (automotive filters).

Typical Physical Data

Appearance
Colorless, transparent liquid
Active Content
≥98%
Density
0.90±0.05 (20~30°C)
Viscosity
<10mPa.s (20~30°C)
Dilution ratio
10~20

Waterproofing Process

1. Cleaning: Clean the surface of the building materials (cement, bricks, tiles, stone, etc.) by removing dust, oil stains, and debris, and let it dry. Fill any visible cracks with waterproof paste and allow it to dry.

2. Diluting the concentrated water repellent: Use alcohol or hydrocarbon solvents like ethanol, isopropanol, or petroleum solvents to dilute the concentrate into a working solution. To reduce harm to operators and the environment, avoid using methanol, benzene, or chlorinated solvents. The ideal solvent boiling range is 140-190°C, with a flash point above 40°C, to prevent drying too quickly or too slowly and to reduce fire hazards. The dilution ratio of solvent to concentrate ranges from 1:9 to 1:20. For slightly damp substrates, hydrocarbon solvents are preferable to alcohols.

3. Application: For spray application, cover surrounding areas that do not require waterproofing with plastic sheeting to prevent contamination. For brush application, clean and dry the brush before use, and clean it with solvent after use for future applications. Both spray and brush applications may require two or more coats, with the second coat applied after the first is surface-dry.

Coverage

The estimated coverage per liter of working solution for different materials is as follows:

  • Cement concrete: 5-10 m²
  • Cement mortar: 5-10 m²
  • Lime mortar: 5-10 m²
  • Natural stone (marble, granite): 10-20 m²
  • Cement fiberboard: 5-10 m²

Safety, Packaging, and Storage

180kg drums. Store in a cool, dry place, away from high temperatures and moisture. Keep the inner and outer lids tightly sealed, especially for unused working solution.

Keep away from open flames and hidden flames (e.g., cigarette butts). If the solution contacts the skin, wash with soap and water. Wear a mask during application to prevent inhalation, and seek medical attention if inhaled.