- Author
-
Jessup, D. A.
|
Weber, C. G.
|
Weissberg, S. G.
- Title
- Stability of Fiber Sheathing Boards as Determined by Accelerated Aging.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
BMS 69,
January 22, 1941,
6 p.
- Keywords
-
fiberboards
|
aging (materials)
|
stability
|
exposure
|
tests
|
insulating boards
|
thermal conductivity
- Abstract
- Fiber sheathing boards were aged by exposure to wetting, freezing, drying, and to outdoor weathering. Judgment of stability was based on changes produced in the properties of the boards. The properties tested were weight, thickness, expansivity, thermal conductivity, flexural properties, nail-holding strength, and permeability to air and water. Data were obtained on the resistance of the boards to rot-producing fungi. In general, the retention of the essential properties under the aging treatments was excellent. Practically no loss of insulating value was noted, and the strength and water resistance of most of the samples after aging were satisfactory. The boards were not readily subject to mold growth even at excessively high humidities.