The Armor SC25 is a cost-effective water based Siliconate water repellent sealer that requires only one coat. The fast-reaction time of the sealer will start to bead water almost immediately after applying. It is a great sealer if you are looking for a fast, affordable way to seal a concrete surface for up to 10 years.The Armor SC25 will not leave behind a visible surface film and it won"™t change the look or color of the concrete surfaces. Surfaces sealed with the Armor SC25 will become more resistant to freeze-thaw cracking and spalling, mold and mildew growth, and the formation of efflorescence. It is a great sealer for concrete driveways, warehouse floors, garage floors, walkways and patios.• Reduces cracking, spalling, pitting, and staining caused by water absorption• Reduces the growth of mold, mildew, and algae on the surface• Reduces freeze-thaw and salt damage• Will maintain the natural, unsealed look and feel of the substrate• Breathable, low VOC