MasterEmaco N 423RS: Fast-setting concrete-repair mortar for horizontal, vertical and overhead use

Formerly: Emaco FS

How does MasterEmaco N 423RS work?

MasterEmaco N 423RS is a fast-setting, polymer-modified, cementitious repair mortar for horizontal, vertical or overhead surfaces.

Recommended uses:

  • Interior and exterior
  • Vertical and overhead
  • Horizontal
  • Above and below grade
  • Spalls or holes in concrete
  • Deteriorated edges

What are the unique features of MasterEmaco N 423RS?

  • Non-sag consistency able to be placed in 1" (25 mm) thick lifts
  • Fast-setting
  • Only requires the addition of potable water

What are the benefits of MasterEmaco N 423RS?

  • Polymer modification improves adhesion and provides increased freeze/thaw stability
  • Can be mixed with MasterEmaco A 400 to increase high-performance properties

On the Job Videos

US / Canada Product Information

Data Guide

Data Guide (French)

Certification Letter

LEED Letter

Direct contact

Master Builders Solutions Technical Support

Construction Systems


Safety Data Sheet (SDS)

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Related Literature

Certification Letter

pdf (89.98 Kb)

Data Guide

pdf (274.82 Kb)

Data Guide (French)

pdf (132.50 Kb)

LEED Letter

pdf (92.94 Kb)