Rapid Set


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.

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Technical Documents

WunderFixx® resources available in PDF format

Document Name
Best practices to minimize color variation and yield better color consistency with Rapid Set cement products.