GacoFlex A4121

Water-borne Acrylic Primer

GacoFlex A4121 is a water-borne, single component elastomeric acrylic coating characterized by excellent hardness, strength, adhesion and water resistance. A4121 is primarily for use as a temporary primer over GacoRoofFoam as a protective covering until an additional layer of GacoRoofFoom or a GacoFlex coating can be applied.




QUICK DRY. Drying time is 1 to 2 hours.

PDS-GacoFlex A4121

Safety Data Sheet


Case Histories

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