Water-based sealers are protective coatings that use water as a primary solvent. They are commonly used on surfaces like wood, concrete, and masonry to enhance durability and resist moisture. These sealers dry quickly and emit fewer volatile organic compounds (VOCs), making them a safer choice for indoor applications. These sealers come in various formulations, including acrylic and polyurethane types, each offering different levels of protection and finish. They are easy to apply with brushes or rollers and can be cleaned up with soap and water. Overall, water-based sealers provide an effective way to preserve and protect surfaces while being environmentally friendly.