Jordan, B. A., Schmidt, E. L., Huelman, P. H., Krupa, S. V. and Mayer, B.
2004
Wood and Fiber Science, 36(3): 378-386
| Abstract
 Online abstract (Online source), Online abstract (Online source)
Many current problems in moisture-related deterioration of housing are found in the building envelope. Components such as interior surfaces, siding, millwork, sheathing, and framing are damaged due to excessive moisture accumulation, which leads to potential biodeterioration (mold and decay). The monetary and health implications of such widespread failures are severely impacting the housing industry. In certain individual cases of wood wetting, the source of liquid water is readily determined: typically, a failure of external sealing allows direct ingress of precipitation into the wall system. There is, however, still a debate on the role of subsequent moisture movement or condensation (from water vapor movement to a cool surface) in wall and roofing system failures. Here we show that deuterium-labeled water introduced into wood through either liquid or vapor phase can be recovered via distillation or mechanical expression. The use of deuterium as a moisture tracer can assist in determining the origin of moisture (particularly through the vapor phase transition), provide insight into current recommended practices for moisture control in buildings, and assess the application of current moisture modeling on existing moisture failures.
Jordan, B.A.a , Schmidt, E.L.a , Huelman, P.H.b , Krupa, S.V.c , Mayer, B.d Correspondence address
a Department of Wood and Paper Science, University of Minnesota, 2004 Folwell Ave, St. Paul, MN 55108, United States
b Cold Climate Housing Coordinator, University of Minnesota, Minnesota Extension Service, 2004 Folwell Ave, St. Paul, MN 55108, United States
c Department of Plant Pathology, University of Minnesota, 495 Borlaug Hall, St. Paul, MN 55108, United States
d Dept of Phys/Astron/Geol/Geophys, University of Calgary, Calgary, Alberta T2N 1N4, Canada |