The selection of your sealant type should follow the ASTM types below. ASTM D6690, Type I (formerly ASTM D1190): The ASTM D1190, “Standard Specification for Concrete Joint Sealer, Hot-Applied ...

The MA4 was designed to make longitudinal joint sealing easy for any paving crew to perform and enables paving crews to invest in longitudinal joint sealant freeing them of expensive alternatives.

You want to make sure you're not sealing in bacteria or mold ... Otherwise, make sure you use a scraper and apply each layer of joint compound as thinly as possible. There are many types of concrete ...