MasterSeal 5 Gal Self Leveling Sealant

BASF SL-1 joint sealant is a one-component, self-leveling, UV resistant, exterior grade, non-priming polyurethane sealant designed for creating, sealing and waterproofing all type of concrete and metal expansion joints up to 1-1/2" in width.

For joints wider than 1-1/2", SL2 is recommended.
SL1 requires no mixing and bonds to many materials without a primer, including concrete, masonry, metals, fiberglass, etc.