Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® WR1290
SiSiB® WR1290

Masonry Water Repellents

SiSiB® WR1290 is a solventless silicone concentrate based on a mixture of silane and siloxane. It is dilutable with organic solvents.

Dilute solutions of SiSiB® WR1290 in organo silane and siloxane solvents may be used as high quality general purpose water repellents for impregnating and priming mineral and highly alkaline substrates. It is similar to Wacker's Silres BS1290.

SiSiB® WR1290

Technical Data

Color and Appearance

Colorless Clear Liquid

Density 25/25°C


Active Ingredient


Dilution: SiSiB® WR1290 is suggested to be diluted to 6-16% solution.


  • SiSiB® WR1290 is widely used as silicone based water repellent for marble, granite, sandstone, splitting tile, aerated concrete, ferroconcrete, bridge concrete, tunnel concrete, cement fiberboards, mineral plasters, mineral-based natural and artificial stone.

  • When applied to the mineral substrate, SiSiB® WR1290 reacts with the atmospheric moisture or pore water in the substrate and generate active ingredient while liberating alcohol. The active ingredient lowers the water absorbency of the substrate.

  • SiSiB® WR1290 by SiSiB is also used as primer for exterior paints. SiSiB® WR1290 is not suitable for rendering gypsum water repellent.

Packing and Storage

  • SiSiB® WR1290 is supplied in 25Kg and 180Kg drum.】

  • In the unopened original container SiSiB® WR1290 has a shelf life of 2 year in a dry and cool place.

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SiSiB® WR1290