UL for Building Envelope

UL for Building Envelope

Carl Gardner Brown
20+
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Knowledge Expert for the Underwriters Labratories for Buidling Envelope Specific Standards and Testing Methods
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  • Could you explain the implications of using polyisocyanurate foamed plastic insulation boards in terms of minimum and maximum thickness requirements for achieving various fire-resistance ratings?
  • What are the key considerations when choosing between hot mopped bituminous materials and single-ply roofing membranes for roof coverings in terms of fire-resistance classifications?
  • How does the inclusion of gypsum wallboard influence the restrained and unrestrained assembly ratings of steel roof deck systems?
  • Can you detail the mechanical fastening requirements for steel roof decks to ensure compliance with the specified fire-resistance ratings?