Rapid Flex CJ – Control Joint Filler

Rapid curing, semi-rigid polyurea control joint filler.

Rapid Flex CJ is a 100% solids, two component, UV resistant, semi-rigid, rapid curing, polyurea for filling control and construction joints in industrial concrete floors.

RapidFlexCJ-cartridgeRapid Flex CJ allows for joints to be shaved quickly for fast turnaround.

Compliance with ACI 302, section 4.10 recommendation for joint fillers used in saw cut/control joints with a Shore A Durometer of 85. 

USDA accepted and authorized for use in federally inspected meat & poultry plants.

Rapid Flex CJ can be used for the repair of damaged or spalled joint nosing and cracks. 

Finished-Control-JointIdeal for filling control and construction joints in: 

  • Industrial and commercial concrete floors subject to heavy forklift traffic
  • Heavily trafficked retail concrete floors 
  • Repair of cracks and joints in old concrete floors
  • Freezer floors

Features & Benefits 

  • Pourable, dark gray consistency
    Rapid Flex CJ Safety Data Sheet

    Safety Data Sheet

    Rapid Flex CJ Technical Data Sheet

    Technical Data Sheet

    Rapid Flex CJ Product Sell Sheet

    Product Sell Sheet

  • Easy 1-to-1 mix ratio
  • Semi-rigid flexibility that does not weld slabs together or become brittle with age
  • High elongation (200%) to resist tearing due to excessive movement
  • Optimum hardness (Shore A = 85) to transfer wheel loads while allowing moderate movement
  • Can be applied and cured down to -20 F
  • Available in 22 fl oz cartridges and 10 gallon units

Product Resources

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SpecChem Product Selection Guide

SpecChem Product Category Overview

SpecGuide: SpecChem Product Catalog


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