Carboguard 1340 WB is a two component, waterborne epoxy primer used as a primer/sealer for concrete substrates. It promotes the adhesion of a variety of topcoats including polyurethane/polyurea elastomers. It can be used on dry or damp concrete. It is particularly effective to prime damp concrete substrates prior to the application of topcoats that might otherwise be compromised by any surface moisture.