BRB SILOEN®WRC4

BRB Siloen® WRC4 is a solvent-free thixotropic impregnating water-repellent agent, based on alkyl silane suitable for the protection of building materials. BRB Siloen® WRC4 is also recommended as a chemical damp proofing agent.

• Hydrophobizing impregnation of medium and low absorbency high-density porous mineral, silicate, alkaline substrates (concrete, reinforced concrete, plasters, clay, and terracotta bricks).
• Hydrophobic agent to stop rising damp in masonry.

• Excellent penetration thanks to its paste consistency allowing long contact time.
• Water-based, environmentally friendly.
• Alkali resistant.
• Significantly reduces water uptake as well as water-soluble pollutants uptake.
• High water penetration resistance by capillarity without clogging pores.
• High vapor permeability, breathability.
• Invisible protection doesn’t change the aesthetic of the substrate.

• Protection against rain and runoff water.
• Prevents efflorescence and stops the growth of microorganisms.
• Enhanced durability.
• Creates a chemical barrier against rising damp.

Masonry water repellent: BRB Siloen® WRC4 is typically applied undiluted in one layer in the desired thickness depending on the substrate conditions (porosity, humidity, etc.). The substrates to be treated should be dry (less than 5% surface moisture) and clean. Cracks bigger than 0.3 mm have to be repaired before the treatment. In the case of new concrete, it is recommended to wait at least four weeks (aging) before treating with BRB Siloen® WRC4.

On large surfaces, BRB Siloen® WRC4 is typically applied by an airless gun, while on smaller areas the product can be applied with a trowel followed by a roller to get a uniform coat-weight.

Typical dosage depends on porosity and humidity of the building material, generally between 100 to 700 gr/m² applied. Avoid applying too much material as it may liquefy at the surface and disappear by runoff. Protect the substrate from rain for at least 4 hours after application.

Rising Damp Proofing Chemical: BRB Siloen® WRC4 can be injected into walls affected by capillary rising damp. It disperses more homogeneously into the walls compared to higher solid products, especially in cases of moderate damp, creating a water-repellent chemical barrier.

A Product Safety Data Sheet should be obtained from your BRB office prior to use. Before handling, read product information, Product Safety Data Sheets, and container labels for safe use and any physical and/or health hazard information.

The information given in this product data sheet is believed to be fully accurate. However, BRB International BV shall not be liable for its content and makes no warranty with respect thereto. For additional information, please contact BRB International BV or visit their website: www.brb-international.com.