SiSiB® WR5055 is a free-flowing, redispersible hydrophobic powder based on reactive silane/siloxane compounds encapsulated within a mineral carrier. Upon mixing with water, the silicone is rapidly released, chemically bonding to the cementitious matrix and forming a highly durable water-repellent barrier.
Durable water repellency via chemical bonding
Prevents liquid penetration by surface or capillary action
Highly efficient at low dosage (0.2-1.0%)
Reduces efflorescence and surface staining
Maintains breathability of mortars and plasters
Improves freeze-thaw resistance and durability
Excellent compatibility with binders, fillers, and redispersible powders
Easy dry blending and high storage stability in drymix formulations
Color and Appearance | Free Flowing White Powder |
Bulk Density (g/L) | 400-600 |
pH (10% aqueous dispersion) | 6.0-8.0 |
Active Content (%) | 65 (Silane/Siloxane) |
These values are typical and not intended for specification purposes.
SiSiB® WR5055 is ideal for use in a wide range of cementitious and gypsum-based drymix products, including:
Waterproof mortars
Decorative plasters and textured renders
Tile adhesives and grouts
Repair mortars
Cementitious sealants and skim coats
EIFS base coats and top coats
SiSiB® WR5055 is supplied in 20Kg bag.
In the unopened original packing SiSiB® WR5055 has a shelf life of at least 12 months in a dry and cool place.
Storage beyond the date does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.