MasterEmaco N 425 is a trowel-grade, lightweight, polymer-modified, silica fume-enhanced repair mortar with an integral corrosion inhibitor. 

Product Highlights

  • Non-sag consistency able to be placed in 2" (51 mm) thick lifts

  • Readily sculpted, shaved, and finished to match existing substrate

  • Very low chloride permeability and an integral corrosion inhibitor protects reinforcing steel

  • Only requires the addition of potable water

  • Low shrinkage produces stable, durable bond

  • Lightweight microscopic beads improve vertical and overhead workability

  • Polymer modification improves adhesion and provides increased freeze/thaw stability 


  • Interior and exterior

  • Vertical and overhead

  • Above and below grade

  • Spalls or holes in concrete Deteriorated edges


  • Concrete

  • Masonry

  • Structural Concrete