BRB SILOEN®SR 619

BRB Siloen® SR 619 is a solvent dilutable alkylsilane/siloxane concentrate used as a masonry water repellent.

• Impregnating agent for mineral and highly alkaline building materials
• Primer for mineral building materials

• Good depth of penetration
• Very good water repellency
• Easy to dilute in solvents
• High resistance to alkalinity
• Tin catalyst free

• Suitable for porous mineral building materials such as:
  • Fired clay bricks (terracotta)
  • Sand lime brickwork
  • Cement and concrete substrate including cement fiberboards
  • Aerated concrete
  • Mineral (silicic composition) natural and artificial stone
  • Mineral plaster and paints
• Fast development of water repellency
• Little or no influence on the appearance of the substrate

BRB Siloen® SR 619 may be used as received or diluted prior to use. Dilution of the material prior to use in solvent is recommended. Suitable solvents include White Spirit 130/175, White Spirit 145/200, other petroleum hydrocarbons, and low aromatic hydrocarbons. The solvent should have a boiling range of 140-190°C and an evaporation number of 30-90. Normal dilution in weight ratio ranges from 1:11 up to 1:15.

In case of possible contact with solvent-sensitive materials, BRB Siloen® SR 619 can also be diluted in alcohol, provided it is totally anhydrous. Usable alcohols are ethanol or isopropanol. In this case, BRB Siloen® SR 619 should be diluted 1:12.

After dilution, BRB Siloen® SR 619 can be applied by flooding, spraying, brushing, or rolling until the substrate is saturated. Multiple layers are recommended to achieve the best performance; wet-on-wet application is the best-recommended procedure. The substrate must be dry and free of significant cracks (maximum 0.3 mm).

BRB Siloen® SR 619 provides early water resistance; however, the best performance builds up after 1 week to 10 days from application.

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.