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FIRE RATED POLY SHEET

thread334-12641

FIRE RATED POLY SHEET

FIRE RATED POLY SHEET

(OP)
We build sound proof enclosures for power generation.  Our insulation system includes a vapour barrier.  Our present choice has a decent fire rating, but still performed badly in an actual fire.  Since this additional precaution seems to have bought us little, we are considering substituting 6 mil poly sheet (or some equivalent in price and service) if one exists with ASTM E-84 Flame Spead Index <25 and Smoke Development Index <450.  Does anyone if such a thing exist?
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