Concrete Smoothing and Patching Compound

Patch, sand and paint the same day.

Grit free, ultra-smooth finish.

Self-Curing Technology (SCT).

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.