Prefabricated Cleanroom Floor Forming Systems

CSSI’s Prefabricated Cleanroom Floor Forming System is a pre-formed, stay-in-place modular waffle/cheese slab solution engineered for the demanding requirements of semiconductor fab cleanrooms and controlled environments. Delivered as a complete, ready-to-set forming system in 8’ x 24’ modules, it arrives on-site ready to accept rebar and concrete pour—reducing labor, simplifying logistics, improving safety, and accelerating schedules versus conventional forming or precast, while delivering a cleaner finish, tighter tolerances, and superior performance from the ground up.

Key Structural Features

  • Stay-in-place form system eliminates stripping and minimizes field finishing.
  • Reusable bulkheads for pour breaks allow rebar pass-through.
  • Autophoretic, paint-ready finish compatible with cleanroom paint systems—no patching or grinding.
  • Cleanroom-approved, primed components help ensure visible surfaces meet contamination control requirements.
  • Bottom metal covering for waffle beam bottoms—no exposed concrete.
  • Unistrut-ready design in beam bottoms and openings for horizontal and vertical utility supports.


Build Faster. Build Smarter, Build Safer.

No reusable dome forms needed eliminating costs for purchase, handling, storage, and removal.
Minimal concrete finishing saves on labor for patching and surface prep.
Simplified sourcing one solution for all waffle opening components.
Optimized logistics modules delivered and hoisted directly into place with no staging required.
Reduced crane use material handling does not require cranes walking through the building footprint.
Lower freight cost when using modular, stackable design reduces freight and hoisting cost.
Quick lead times mean faster availability than traditional steel, plastic, or fiberglass forms.
No stripping or underside finishing accelerates follow-on work by 2–3 weeks.
Immediate MEP start sealed modules allow early dry-in, shaving 3+ months off project timelines.

Superior Quality

  • Precision manufacturing—machine-tolerance templates ensure a super-flat surface.
  • Accurate fit—modules align perfectly with bay dimensions for seamless integration.
  • Clean, uniform surface—Autophoretic coating produce a surface immediately compatible with field paint and finishing systems.

Enhanced Safety

  • No heavy form stripping—avoids lifting and handling of 200+ lb forms.
  • Reduced congestion—fewer trades on-site thanks to earlier MEP starts.
  • Improved weather protection—sealed forms keep lower levels dry from day one.