- Author
-
Sweet, M. S.
|
LeVan, S. L.
|
White, R. H.
|
Tran, H. C.
|
DeGroot, R.
- Title
- Fire Performance of Wood Treated With Combined Fire-Retardant and Preservative Systems.
- Coporate
- Forest Products Lab., Madison, WI
USDA Forest Service, Washington, DC
- Report
-
FPL-RP-545,
March 1996,
11 p.
- Keywords
-
wood
|
fire retardant treatments
|
fire tests
|
heat release rate
|
amino resins
- Identifiers
- preservative; shingles; Pacific silver fir; western hemlock; western redcedar
- Abstract
- The availability of western redcedar has decreased in recent years, and other species of wood are being considered as substitute materials for wood shakes and shingles. However, the wood of these alternative species is more susceptible to decay than is western redcedar. The objective of this study was to evaluate the fire performance of combined fire retardant and preservative treatments using different fire test methods. Several amino resin fire retardants were used in combination with several wood preservative compounds that imparted both fire retardancy and decay resistance to wood. Treated specimens underwent fire tube tests and based on the results of these tests, two fire retardants and two quaternary ammonium preservatives were selected for additional fire testing. These treated materials were subjected to a modified Schlyter test and a burning brand test. The heat release rate was also measured. Both weathered and unweathered specimens were evaluated. The unweathered and weathered treated material exhibited good fire performance.