These systems involve a solvent free flexible membrane for bridging of hairline cracks in order to prevent ground contamination. This membrane is than coated with a chemically resistant topcoat specific to its use.
Special care must be administered to containment walls. Concrete pitting on vertical surfaces are traps for corrosion. These voids must be filled with an epoxy paste to provide a suitable substrate and to achieve containment prior to the application of the membrane.