Silway 714 Silicone Water Repellent Water-Dilutable Solution of 42% Concentration Potassium Methyl Siliconate for Impart Water Repellency to Masonry Surfaces. Water Repellent Solution: Water-dilutable 42% concentration potassium methyl siliconate for masonry surfaces. Reduces Water Absorption: Minimizes spalling from freeze-thaw cycles and efflorescence, extending substrate life. Colorless and Non-Yellowing: Preserves the natural appearance of bricks, sandstone, limestone, and ceramics. Penetrating and Breathable: Forms an insoluble water-resistant treatment while allowing substrate to breathe. Low VOC and Nonflammable: Environmentally friendly formula that is safe and easy to handle. Fast Curing Time: Reacts with air carbon dioxide to form treatment within 24 hours. Customizable Packaging: Available in 200L or 1000L drums, or customized according to customer request. 12 Months Shelf Life: Stable product with 12-month shelf life when stored in closed containers.