Penetrating Primer and Water Repellent for Concrete and Masonry
Si-Prime is a water-borne blend of silanes, siloxanes and acrylics used for priming porous concrete and other mineral substrates.
Si-Prime impregnates the surface making the penetrated zone hydrophobic (water repellent) that creates a dry zone beneath the coating. This is an additional layer of waterproofing protection for the substrate to the topcoat applied subsequently.
The dry zone created by Si-Prime helps protect the topcoat underside from salts and alkalis that can be transported to the surface.
Being of low viscosity, Si-Prime penetrates well into the substrate and once cured allows entrapped moisture in the substrate to outgas as moisture vapor.
Si-Prime also helps bind and consolidate weak or powdery surfaces.
Fully compatible with Si-Rex03 Silicone Resin Emulsion Paint, Si-Prime helps equalize surface porosity to allow a more even application of the topcoat.
Refer Product Data Sheet (TDS) for use and application guidelines.
Klaas Coatings (North America) LLC
PO Box 25122
Dallas, TX 75225-1122
T: 866-317-3633 (toll free)
Markets We Supply
Commercial and Retail
Warehousing and Distribution
Precast Concrete Fabricators
Condominiums and Multi-Family
Schools and Colleges
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All orders supplied ex-factory – products not available through retailers.
Some regional building product distributors may carry, or order in, product as needed.
(packed volume by weight):
Si-Rex03 - 5 Gallon Pail or 55 Gallon Drum
Si-Prime - 5 Gallon Pail
Si-Rex03 orders are custom batch tinted at factory. Batch tinting ensures exact same color pail-to-pail. Minimum Order Quantities (MOQ) apply; contact for details.