No. F-120 Underlayment and Repair Mortar by Sauereisen

The F-120 Underlayment by Sauereisen is a fast setting, high early strength, resurfacing material available in trowelable, castable, or gunite formulations. The F-120 is designed to be used with resinous systems and may be top-coated with an epoxy as early as 5 hours.