| Product description: SILRES® BS 290 is a solventless silicone concentrate that is based on a mixture of silane and siloxane. SILRES® BS 290 is dilutable with organic solvents. Dilute solutions of SILRES® BS 290 in organic solvents serve as high-quality general-purpose water repellents for impregnating and priming mineral and highly alkaline substrates. Special features: - good depth of penetration
- high resistance to alkalis
- tack-free drying
- effective even on damp substrates
- rapid development of water repellency
After application to the mineral substrate, SILRES® BS 290 reacts with the atmospheric moisture or pore water in the substrate, thereby generating the active ingredient while liberating alcohol. The active ingredient greatly lowers the water absorbency of the substrate, which nevertheless retains a very high degree of water vapour permeability since neither pores nor capillaries are clogged. Application: SILRES® BS 290 is suitable for imparting water repellency to absorbent, porous, mineral construction materials, e. g.: - brickwork
- all kinds of concrete
- aerated concrete
- sand-lime brickwork
- cement fiberboards
- mineral plasters
- mineral-based natural and artificial stone
- mineral paints
SILRES® BS 290 is also suitable as primer for exterior paints. SILRES® BS 290 is not suitable for rendering gypsum water repellent.Information provided by Wacker Chemie AG. |
