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CSS-UCG Unidirectional Carbon Grid

CSS-UCG is a unidirectional, high-strength, non-corrosive carbon grid designed to be field installed with CSS-CM cementitious matrix to create a fabric-reinforced cementitious matrix (FRCM) composite for structural reinforcement applications. This product has been evaluated per ICC-ES AC434 for concrete and unreinforced masonry strengthening using fabric-reinforced cementitious matrix (FRCM) and steel reinforced grout (SRG) composite systems. This product is part of the tested assembly in UL Design No. N859, which achieved a four-hour fire rating when subjected to ASTM E119 / UL 263 full-scale fire testing. Please refer to UL Online Certifications Directory for the UL listing.

Key Features

  • High strength
  • Ambient cure
  • Non-corrosive
  • Molds to fit various shapes
  • Low aesthetic impact
  • Compatible with many finish coatings
  • UL listed
  • Component of Class A flame spread/smoke developed indices test
  • Weight: 13 oz./yd.2 (440 g/m2)


  • Seismic retrofit
  • Load rating upgrade
  • Damage repair
  • Defect remediation
  • Blast mitigation

Storage Conditions

  • Store material in a dry area with no exposure to moisture

Shelf Life

  • 10 years in unopened, undamaged packaging


Roll Size (Width x Length) / Model No.

  • 77 in. x 164 ft. (1.95 m x 50 m) / CSS-UCG19550

Limited Warranty

  • This product is covered by the Simpson Strong-Tie RPS Product Five-Year Limited Warranty, which is available at strongtie.com/limited-warranties or by calling Simpson Strong-Tie at (800) 999-5099

Related Literature

Code Reports & Compliance