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FX-207 Slurry Seal

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FX-207 Slurry Seal is a two-component, polymer-modified cementitious coating designed for fire insulation with FRP materials as well as waterproofing and damp-proofing concrete and masonry substrates. This product is part of the tested assembly in UL Design No. N861, 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.

CSI Specification

  • 07 16 00 Cementitious Waterproofing
  • 9 96 43 Fire Retardant Coatings

Key Features

  • Trowel or slurry consistency
  • Convenient pre-measured kit
  • Excellent bond strength
  • Can be applied by brush, roller, spray or trowel
  • UL listed


  • Coating over FRP materials for fire insulation and flame/smoke spread resistance
  • Horizontal and vertical surfaces
  • Above-grade and below-grade applications
  • Waterproofing and damp‑proofing concrete and masonry
  • Interior and exterior applications
  • To protect concrete and masonry from freeze/thaw cycles

Application Rate

  • Damp-proofing: 40 WFT mils total applied in one coat, 40 ft.2/US gal. (1 m2/L) depending on surface profile and porosity
  • Waterproofing: 80 WFT mils total applied in two coats, 40 ft.2/US gal. (1 m2/L) per coat depending on surface profile and porosity


  • 0.50 ft.3 (0.014 m3) per kit


  • Gray

Mixing Ratio

  • Preproportioned kit. Use entire contents of all components.

Storage Conditions

  • Store dry between 40° and 95°F (4°–35°C). Protect liquid component from freezing.

Shelf Life

  • 1 year in unopened packaging


  • 10 g/L (mixed)


3.9 US gallon (15 L) kit (FX207KT1-1) contains:

  • 1 US gallon (3.8 L) jug of Component “A” (FX207-1A)
  • 50 lb. (22.7 kg) bag of Component “B” (FX207-B50)
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