Rapid Set WunderFixx Bag


Concrete Smoothing and Patching Compound



WunderFixx is a high performance, gray concrete smoothing and patching compound that is durable in wet environments with excellent bonding characteristics. Apply from skim coat to 1/2″ thick. Use for cosmetic patching, detailing and smoothing on tilt-up panels, precast, formed work, concrete block and other concrete and masonry surfaces. Tested in accordance with: ASTM C109.

  • Patch, sand and paint the same day.
  • Grit free, ultra-smooth finish.
  • Self-Curing Technology (SCT).