HydroFlor® Sealer GC is a breathable, zero VOC, epoxy floor primer, to be used in conjunction with Duromar’s HydroFlor epoxy floor coating. The Sealer is used to prevent outgassing during the application of HydroFlor. It has a unique breathable structure, which allows moisture vapor to escape from the concrete. The sealer is extremely easy to apply, requiring little or no surface profiling. It may also be applied to damp, clean concrete.