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Forest Products Laboratory
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Madison, WI 53726-2398
Phone: (608) 231-9200
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Requested Product

Title: Degradation of Fire-Retardant-Treated Plywood: Current Theories and Approaches

Source: 1991 International Symposium on Roofing Technology, 1991 April 17-19; Montreal, Canada. 1991 Rosemont, IL: National Roofing Contractors Association; 1991; pp. 517-522.

Author(s): Still, Mary Rose; LeVan, Susan L.; Suffleton, Joseph D.

Publication Year: 1991  View PDF »

Category: Conference Proceedings

Abstract: Premature deterioration of plywood roof decking which has been treated with fire-retardant chemicals has rendered roofs across the United States structurally unsafe and has catapulted cost estimates for potential damage and replacement of damaged plywood into the billions of dollars (U.S.). The historical and economic development of chemical formulations, building code allowances and cost-saving alternatives to parapet wall construction in multifamily dwellings has dramatically increased the production and usage of fireretardant-treated (FRT) plywood since 1982. At the same time, industry practices and inherent shortcomings in FRT plywood design may have spurred the proliferation of FRT problems which manifest themselves after the fact.

Keywords: Acid-catalyzed dehydration, fire retardants, kiln drying, multifamily dwellings, plywood, strength, thermal degradation

Publication Review Process: Non-Refereed (Other)

File size: 209 kb(s)

Date posted: 08/08/2014
RITS Product ID: 68258

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