Guest User
1/10/2008
Hello, Can anyone help me find the best UL desing for a 1hr roof for the following system" SS metal roof 4" Z-Purlins 6" Suppport brackets fastened to bottom flutes of steel deck 1 1/2" steel decking Wide flange steel strctural framing. I need r-24 of insulation. The best/ closet desing I have seen so far is P711, but this has a maximum thickness of 4 7/8" insulation of Mineral fiber board. Even counting for fireproofing the bottom of the deck this is keeping me below r-24. I would prefer fiberglass batt insualtion, but I see not UL provisions for it.
Todd Miller
Classic Products, Inc.
2/6/2008
First of all, this will be based upon how the roofing manufacturer has tested and had their product approved. One option would be Elk VersaShield I believe.
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