Rainguard Micro-seal 5 Gal Concentrate (makes 50 Gal) Clear Penetrating Silane Siloxane Professional Grade Water Repellent Sealer - Concrete, CMU, Block, Brick, Stucco, Stone, Wood Surfaces, Apply Low Temp 35F & to New Concrete, 10 Year Warranty Easy to Apply - Does not alter surface appearance, will not yellow 10 Year Labor and Material Mfg Warranty Available Stain resistant to oil, gas and anti-freeze & Excellent mold and mildew resistance A proprietary ingredient called Micro-Lok ensures a long lasting mechanical bond and creates a hydrophobic barrier not affected by weathering, salt, dirt, freezing temperatures, UV light and wind-driven rain Concentrate Makes 50 Gallons ready-to-use product - Simple mixing with water