Ames, gallon, regular grade blue max, a special blend of adhesive, high strength elastomeric liquid rubber, impenetrable, rubber technology for waterproofing in extreme wet situations such as below grade foundations & basement walls, high in solids & dries to a tough 800% elastic membrane that resists cracking & peeling, remains flexible from -30 degrees to 150 degrees Fahrenheit, impervious to water when applied in a uniform & seamless fashion with adequate millage, flows into cracks & crevices as a liquid & sets up as a durable rubber to seal leaks wherever they occur, uv sensitive, must be top coated if exposed to sunlight.