UL Design P826

2-Hour Fire Rated Steel Roof Deck — SFRM deck, joists and beam

UL Design P826 — roof-ceiling: Class A/B/C roof covering over 1"–5" foamed plastic insulation on 5/8" gypsum board over min 22 MSG, 1-1/2" fluted steel roof deck on min W6x16 beams or 10K1 joists; deck, joists and beam sprayed with SFRM. CAFCO 300-series option at 2 hr: deck 1-1/16", joist 1-3/16", beam 13/16" (Type DC/F, HP, II families require more).

Roof covering + foam insulation + 5/8" gypsum + fluted deck on joists, SFRM by rating

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  • Layer-by-layer components with thicknesses
  • Cross-section diagram
  • Applicable code sections and test standard
  • 6 related assemblies
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