Super Build 4:1 is a two-component hybrid polyester epoxy primer surfacer that has exceptional filling capabilities and patented 4:1 mix ratio technology.
It is ideal for holding down troublesome repairs on fiberglass and SMC. Super Build 4:1 passes 500 hours in salt spray tests (ASTM B117) and can be applied over properly sanded and cleaned bare metal. It is compatible with waterborne paint systems and VOC compliant.
Must be catalyzed with 100733 4:1 Polyester Primer Catalyst or 100734 Fast 4:1 Polyester Primer Catalyst only!
SUBSTRATES: Aluminum, SMC, Rigid Plastics, Bare Metal, Fiberglass, Body Filler or Putty