The answer: it depends on the type of concrete, and what you are looking for. Some sealers provide simple water-proofing while others provide a decorative, glossy appearance. According to our research, the best environmentally-compliant sealers are Surecrete’s HS 200LV and 300LV sealers. Both products combine the decorative qualities of an acrylic overlay with the advanced chemical attributes of silanes to create a bond with concrete that outperforms other sealers on the market today.