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fire ratings

Posted by Harold Kestenholz - Hydronic Network on July 11th, 2001 12:24 PM
In reply to partical board exposed to extreme heat by June on July 11th, 2001 09:59 AM [Go to top of thread]
"Fire Resistance:
B1 - according to DIN 4102.
Class 0, BS476 part 6. Fire Propagation.
Class 1, BS476 part 7. Surface Spread of Flame"
"Eggers' fire retardant particle core panels are designed to meet Class l fire code requirements. Finished particle core panels with Underwriters' Laboratories, Inc (r), labels are constructed with fire retardant particle core treated with compatible chemicals, modern synthetic heat resistant adhesives, and special finishing materials."
"2. By way of comparison, standard particle board has a Flame Spread Index of up to 400."
"Flame spread is Class C or III with smoke toxins higher in the crop materials than in the finished product. (Additives or coatings are available to improve flame spread.)"
"In Underwriters Laboratories tunnel tests; unmodified standard Strandex WPC has achieved flame-spread ratings of 46 (c.f. redwood = 100). This can be improved by the addition of flame and smoke retardants at the mixing stage to improve performance."

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