LP FlameBlock

Meet Code. Exceed Expectations.

Image courtesy of KTGY Group and Avalon Bay

A Single Fire-Rated Panel
That Allows You To Do More With Less

LP® FlameBlock® Fire-Rated OSB Sheathing is ICC-certified to meet code and provides additional value—strength, savings and greater design flexibility. It helps you build fire-rated wall assemblies and roof deck faster—at a lower cost—than most common alternatives.

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Code Approved

  • ICC-certified (ESR-1365)
  • Class A and 30-Minute Flame Spread Rating (ASTM E84, UL 723)
  • Combines flame-spread resistance and burn-through resistance
  • 15-Minute Thermal Barrier Protection (UBC 26-2)
  • Component of fire-rated interior and exterior wall assemblies and roof decks
  • Exposure 1 classification; withstands normal exposure to moisture during construction

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Installation Instruction Video for UL No. U350B Wall Assembly

This animated video provides a side-by-side comparison showing how the U350B wall assembly featuring LP® FlameBlock® Fire-Rated OSB Sheathing installs faster and easier than traditional shaft wall. On average, U350B assemblies save 4 inches of floor space per 4-foot wall compared to shaft wall.

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Landmark College Park Meets Strict Fire Codes With LP® FlameBlock® Fire-Rated Sheathing

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Wall Assembly

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