Concrete Solutions for architects, engineers and builders since 1974

StarSeal Assist RTU

STARSEAL ASSIST RTU is a ready to use evaporation retardant that is applied to fresh concrete during finishing to extend working time.

When properly applied, StarSeal Assist RTU forms a thin, continuous monomolecular film that reduces early moisture evaporation between the various placing and finishing operations, a major cause of plastic shrinkage cracking.


  • Formulated for instant usage
  • No dilution required
  • Helps prevent plastic shrinkage cracking
  • Holds in surface moisture reducing evaporation rate
  • Extends finishing time
  • Minimizes rapid drying due to high wind, direct sunlight and high temperatures
  • Dyed yellow as visual application aid


Gurad/Film Forming Sealers

Penetrating Sealer and Concrete Curing in one easy-to-use product.