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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
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Samuel V. Glass
Samuel V. Glass

Samuel V. Glass

Building and Fire Sciences
Unit: FPL-4716
Research Physical Scientist
One Gifford Pinchot Drive
Madison, WI
United States
53726-2398

Phone: 608-231-9401
Fax: 608-231-9303
samuel.v.glass@usda.gov

Current Research

Wood structures can endure for centuries if they remain sufficiently dry. As the construction industry evolves, research is needed to protect wood buildings from the potential effects of moisture. Proper design, operation, and maintenance of wood buildings are critical to prevent moisture-induced damage, such as mold growth, wood decay, and corrosion of metal fasteners.Dr. Glass conducts research within the Building and Fire Sciences Research Work Unit at the Forest Products Laboratory. His research focuses on the building envelope, the collective elements that separate the interior and exterior environments, including the foundation, exterior walls, and roof. Dr. Glass investigates the relationships between moisture, energy efficiency, and durability in residential and non-residential wood buildings. Primary research objectives include

  • Advancing the fundamental understanding of wood–moisture interactions;
  • Quantifying moisture transfer in the building envelope;
  • Developing tools for predicting moisture-induced damage in buildings; and
  • Developing moisture control strategies for cross-laminated timber, a relatively new engineered wood product with vast potential for use in mid-rise and high-rise buildings.


Research Interest

  • Wood−moisture interactions
  • Water vapor sorption in wood
  • Moisture-related properties of wood and wood products
  • Cross-laminated timber (CLT)
  • Moisture control in buildings
  • Heat, air, and moisture transfer in the building envelope
  • Interior and exterior moisture loads on the building envelope
  • Tools for predicting mold growth, wood decay, and corrosion of metal fasteners
  • Hygrothermal modeling
  • Instrumentation for monitoring moisture levels in building assemblies


Past Research

Dr. Glass conducted his doctoral research in the Department of Chemistry at the University of Wisconsin-Madison. He investigated how surfactant films at the gas-liquid interface control gas uptake and evaporation of water. These studies contributed to understanding chemical reactions that occur in sulfuric acid droplets in the upper troposphere and lower stratosphere, which affect ozone levels.


Research Importance

Moisture control in wood buildings is important for human health, building sustainability, and conservation of the forest resource. Excessive moisture levels in buildings can lead to mold growth and respiratory health problems for occupants. Preventing moisture problems contributes to building sustainability by extending the service life. The sustainability and health of America's forests depend on sound conservation practices, including utilization. Efficient wood utilization reduces the risk and impacts of wildfire, provides incentives for private landowners to maintain forest land, and provides a critical source of jobs in rural America. Use of wood as a green building material is important for climate change mitigation because wood products store carbon for as long as the building exists. Wood products require less energy to process than other building materials such as steel or concrete, and use of wood produces less air pollution, solid wastes, and greenhouse gases. These benefits hinge on efficient and proper use of wood in construction.


Education

  • University of Wisconsin-Madison, Ph.D. Physical Chemistry , 2005
  • Calvin College, Grand Rapids, MI, B.A. Chemistry/Classical Civilization/Archaeology , 1998

Professional Experience

  • Research Physical Scientist, USDA Forest Products Laboratory 2005 - Current
  • Research Assistant, University of Wisconsin-Madison, Department of Chemistry 2001 - 2005
  • Teaching Assistant, University of Wisconsin-Madison, Department of Chemistry 1999 - 2001

Professional Organizations

  • Society of Wood Science and Technology (SWST), Member (2008 - Current)
  • American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), Member Standing Standard Project Committee 160, Criteria for Moisture-Control Design Analysis in Buildings; Technical Committee 1.12, Moisture Management in Buildings; Technical Committee 4.4, Building Materials and Building Envelope Performance (2005 - Current)

Below are the 75 US Forest Service publications sorted by year. You may re-sort the list by: Title, Date Posted, Category, Publication or Year.

Publication Year: 2022
 
Title: Serviceability limit state model for fungal growth on wood materials in the built environment
Source: Journal of Building Engineering journal
Author(s) Lepage, Robert ; Glass, Samuel V; Bastide, Paul de la; Mukhopadhyaya, Phalguni
Year: 2022   view abstract, download publication »
Publication Year: 2021
 
Title: A Nondestructive Longitudinal Laboratory Test Method for Detection of Incipient Ultrastructural Changes in Wood
Source: Journal of Testing and Evaluation
Author(s) Lepage, Robert ; Glass, Samuel V; de la Bastide, Paul Y.; Mukhopadhyaya, Phalguni
Year: 2021   view abstract, download publication »
Title: Common sorption isotherm models are not physically valid for water in wood
Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Author(s) Thybring, Emil E.; Boardman, Charles R.; Zelinka, Samuel L.; Glass, Samuel V
Year: 2021   view abstract, download publication »
Title: Exponential decay analysis: a flexible, robust, data-driven methodology for analyzing sorption kinetic data
Source: Cellulose
Author(s) Glass, Samuel; Zelinka, Samuel; Thybring, Emil Engelund
Year: 2021   view abstract, download publication »
Title: Interpreting Dynamic Vapor Sorption (DVS) Measurements: Why Wood Science Needs to Hit the Reset Button
Source: paper in proceedings
Author(s) Zelinka, Samuel; Thybring, Emil E.; Glass, Samuel
Year: 2021   view abstract, download publication »
Title: Long-Term Moisture Monitoring Results of an Eight-Story Mass Timber Building in the Pacific Northwest
Source: Journal of Architectural Engineering
Author(s) Pei, Shiling ; Stogdill, Jake ; Glass, Samuel V; Zelinka, Samuel ; Kordziel, Steven ; Tabares-Velasco, Paulo Cesar.
Year: 2021   view abstract, download publication »
Title: Moisture relations and physical properties of wood
Source: Chapter 4 in FPL-GTR-282
Author(s) Glass, Samuel; Zelinka, Samuel
Year: 2021   view abstract, download publication »
Publication Year: 2020
 
Title: Effects of wood moisture content and the level of acetylation on brown rot decay
Source: Forests. 11(3): 299
Author(s) Zelinka, Samuel L.; Kirker, Grant T.; Bishell, Amy B.; Glass, Samuel V
Year: 2020   view abstract, download publication »
Title: Evaluation of previous measurements of water vapor sorption in wood at multiple temperatures
Source: Wood Science and Technology. 54(4): 769-786
Author(s) Zelinka, Samuel L.; Glass, Samuel V; Thybring, Emil Engelund.
Year: 2020   view abstract, download publication »
Title: Fungal Diversity Associated with Zones of the AWPA Fungal Decay Hazard Map
Source: Paper in proceedings
Author(s) Kirker, Grant T.; Bishell, Amy; Glass, Samuel; Bechle, Nathan; Cappellazzi, Jed; Palmer, Jonathon; Hickey, William
Year: 2020   view abstract, download publication »
Title: Hygrothermal characterization and modeling of cross-laminated timber in the building envelope
Source: Building and Environment. 177: 106866. 13 p.
Author(s) Kordziel, Steven ; Glass, Samuel V; Boardman, Charles R.; Munson, Robert A.; Zelinka, Samuel L.; Pei, Shiling ; Tabares-Velasco, Paulo Cesar.
Year: 2020   view abstract, download publication »
Title: Improving the Accuracy of a Hygrothermal Model for Wood-Frame Walls: A Cold-Climate Study
Source: Buildings
Author(s) Boardman, Charles R.; Glass, Samuel V
Year: 2020   view abstract, download publication »
Title: Moisture redistribution in full-scale wood-frame wall assemblies: measurements and engineering approximation
Source: Buildings. 10(8): 141. 25 p.
Author(s) Boardman, Charles R.; Glass, Samuel V; Zelinka, Samuel L.
Year: 2020   view abstract, download publication »
Publication Year: 2019
 
Title: Biodeterioration models for building materials: critical review
Source: Journal of Architectural Engineering. 25(4). 15 p.
Author(s) Lepage, Robert ; Glass, Samuel V; Knowles, Warren ; Mukhopadhyaya, Phalguni
Year: 2019   view abstract, download publication »
Title: Field moisture performance of wood-framed walls with exterior insulation in a cold climate
Source: Res. Pap. FPL-RP-698. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 1-42.
Author(s) Boardman, C.R. ; Glass, Samuel V; Munson, Robert ; Yeh, Borjen ; Chow, Kingston
Year: 2019   view abstract, download publication »
Title: Hygrothermal modeling of wall drying after water injection
Source: In: Proceedings, Thermal performance of the exterior envelopes of whole buildings XIV international conference. Clearwater, FL: 887-894.
Author(s) Boardman, Charles R.; Chow, Kingston ; Glass, Samuel V; Yeh, Borjen
Year: 2019   view abstract, download publication »
Title: Kinetics of water vapor sorption in wood cell walls: state of the art and research needs
Source: Forests. 10(8). 26 p.
Author(s) Thybring, Emil Engelund; Glass, Samuel V; Zelinka, Samuel L.
Year: 2019   view abstract, download publication »
Title: Structure moisture monitoring of an 8-story mass timber building in the Pacific Northwest
Source: Journal of Architectural Engineering. 25(4). 14 p.
Author(s) Kordziel, Steven ; Pei, Shiling ; Glass, Samuel V; Zelinka, Samuel ; Tabares-Velasco, Paulo Cesar.
Year: 2019   view abstract, download publication »
Title: The parallel exponential kinetics model is unfit to characterize moisture sorption kinetics in cellulosic materials
Source: Cellulose. 26(2): 723-735.
Author(s) Thybring, Emil E.; Boardman, Charles R.; Glass, Samuel V; Zelinka, Samuel L.
Year: 2019   view abstract, download publication »
Publication Year: 2018
 
Title: Apparatus for gravimetric measurement of moisture sorption isotherms for 1-100 g samples in parallel
Source: Wood and Fiber Science. 50(3): 244-253.
Author(s) Zelinka, Samuel L.; Bourne, Keith J.; Glass, Samuel V; Boardman, Charles R.; Lorenz, Linda ; Thybring, Emil Engelund.
Year: 2018   view abstract, download publication »
Title: Experimental investigation of the influence of temperature on thermal conductivity of multilayer reflective thermal insulation
Source: Energy and Buildings. 174: 26-30.
Author(s) Pásztory, Zoltán ; Horváth, Tibor ; Glass, Samuel V; Zelinka, Samuel
Year: 2018   view abstract, download publication »
Title: Moisture monitoring and modeling of mass-timber building systems
Source: In: Proceedings, WCTE 2018-World conference on timber engineering. Seoul, Republic of South Korea: Korean Institute of Forest Science. 7 p.
Author(s) Kordziel, Steven ; Glass, Samuel V; Pei, Shiling ; Zelinka, Samuel L.; Tabares-Velasco, Paulo Cesar.
Year: 2018   view abstract, download publication »
Title: Moisture monitoring of wood-frame walls with and without exterior insulation in the Midwestern U.S
Source: In: Proceedings, 7th international building physics conference. Syracuse, NY: 163-168.
Author(s) Glass, Samuel V; Boardman, C.R. ; Yeh, Borjen ; Chow, Kingston
Year: 2018   view abstract, download publication »
Title: Moisture monitoring throughout the construction and occupancy of mass timber builidings
Source: In: Proceedings, 1st international conference on new horizons in green civil engineering (NHICE-01). Victoria, BC: University of Victoria: 32-36.
Author(s) Zelinka, S.L. ; Kordziel, S. ; Pei, S. ; Glass, S.V. ; Tabares-Velasco, P.C.
Year: 2018   view abstract, download publication »
Title: Myth versus reality: do parabolic sorption isotherm models reflect actual wood–water thermodynamics?
Source: Wood Science and Technology. 52(6): 1701-1706.
Author(s) Zelinka, Samuel L.; Glass, Samuel V; Thybring, Emil Engelund.
Year: 2018   view abstract, download publication »
Title: Quantifying and reducing errors in equilibrium moisture content measurements with dynamic vapor sorption (DVS) experiments
Source: Wood Science and Technology. 52(4): 909-927.
Author(s) Glass, Samuel V; Boardman, Charles R.; Thybring, Emil Engelund; Zelinka, Samuel L.
Year: 2018   view abstract, download publication »
Publication Year: 2017
 
Title: Analysis of improved criteria for mold growth in ASHRAE standard 160 by comparison with field observations
Source: In: Mukhopadhyaya, P; Fisler, D., eds. Advances in hygrothermal performance of building envelopes: materials, systems and simulations, ASTM STP1599. West Conshohocken, PA: ASTM International: 1-27.
Author(s) Glass, Samuel V.; Gatland II, Stanley D.; Ueno, Kohta; Schumacher, Christopher J.
Year: 2017   view abstract, download publication »
Title: Development of a mold risk model for wood buildings
Source: fplrip-4723-030-COSchoolofMines-Zelinka-Glass-Pei.
Author(s) Pei, Shiling; Glass, Samuel V.; Zelinka, Samuel L.
Year: 2017   view abstract, download publication »
Title: Effect of weight percent gain and experimental method on fiber saturation point of acetylated wood determined by differential scanning calorimetry
Source: Wood Science and Technology. 51(6): 1291-1305
Author(s) Passarini, Leandro ; Zelinka, Samuel L.; Glass, Samuel V; Hunt, Christopher G.
Year: 2017   view abstract, download publication »
Title: Short hold times in dynamic vapor sorption measurements mischaracterize the equilibrium moisture content of wood
Source: Wood Science and Technology (2017). 51: 243-260
Author(s) Glass, Samuel V.; Boardman, Charles R.; Zelinka, Samuel L.
Year: 2017   view abstract, download publication »
Title: Simple and accurate temperature correction for moisture pin calibrations in oriented strand board
Source: Building and Environment. 112 (2017): 250-260.
Author(s) Boardman, Charles; Glass, Samuel V.; Lebow, Patricia K.
Year: 2017   view abstract, download publication »
Publication Year: 2016
 
Title: A solution thermodynamics definition of the fiber saturation point and the derivation of a wood-water phase (state) diagram
Source: Wood Science and Technology, Vol. 50(3). pp. 443-462.
Author(s) Zelinka, Samuel L.; Glass, Samuel V.; Jakes, Joseph E.; Stone, Donald S.
Year: 2016   view abstract, download publication »
Title: Cell wall domain and moisture content influence southern pine electrical conductivity
Source: Wood and Fiber Science
Author(s) Zelinka, Samuel L.; Passarini, Leandro; Colon Quintana, José L.; Glass, Samuel V.; Jakes, Joseph E.; Wiedenhoeft, Alex C.
Year: 2016   view abstract, download publication »
Title: Comparison of the corrosion of fasteners embedded in wood measured in outdoor exposure with the predictions from a combined hygrothermal-corrosion model
Source: Corrosion Science
Author(s) Zelinka, Samuel L.; Glass, Samuel V.; Boardman, Charles R.; Derome, Dominique
Year: 2016   view abstract, download publication »
Title: Control of solar-driven moisture diffusion in cross-laminated timber walls with absorptive claddings
Source: fplrip-4716-015-Glass
Author(s) Glass, Samuel V.
Year: 2016   view abstract, download publication »
Title: Effects of Exterior Insulation on Moisture Performance of Wood-Frame Walls in the Pacific Northwest: Measurements and Hygrothermal Modeling
Source: 3rd Residential Building Design & Construction Conference - March 2-3, 2016 at Penn State, University Park PHRC.psu.edu 2016
Author(s) Glass, Samuel V.; Yeh, Borjen; Herzog, Benjamin J.
Year: 2016   view abstract, download publication »
Title: Improvements to water vapor transmission and capillary absorption measurements in porous materials
Source: Journal of Testing and Evaluation. 44(6): 2396-2402
Author(s) Zelinka, Samuel L.; Glass, Samuel V.; Boardman, Charles R.
Year: 2016   view abstract, download publication »
Title: Moisture storage and transport properties of preservative treated and untreated southern pine wood
Source: Wood Material Science and Engineering
Author(s) Zelinka, Samuel L.; Glass, Samuel V.; Boardman, Charles R.; Derome, Dominique
Year: 2016   view abstract, download publication »
Publication Year: 2015
 
Title: Anatomically informed mesoscale electrical impedance spectroscopy in southern pine and the electric field distribution for pin-type electric moisture metres
Source: Wood Material Science & Engineering
Author(s) Zelinka, Samuel L.; Wiedenhoeft, Alex C.; Glass, Samuel V.; Ruffinatto, Flavio
Year: 2015   view abstract, download publication »
Title:  Thermal Insulation System Made of Wood and Paper for Use in Residential Construction
Source: Forest Products Journal
Author(s) Pásztory, Zoltán; Horváth, Tibor; Glass, Samuel V.; Zelinka, Samuel L.
Year: 2015   view abstract, download publication »
Title: Basement radon entry and stack driven moisture infiltration reduced by active soil depressurization
Source: Building and Environment, Volume 85, 2015; pp. 220-232.
Author(s) Boardman, C.R.; Glass, Samuel V.
Year: 2015   view abstract, download publication »
Title: Force-displacement measurements of earlywood bordered pits using a mesomechanical tester
Source: Plant, Cell & Environment
Author(s) Zelinka, Samuel L.; Bourne, Keith J.; Hermanson, John C.; Glass, Samuel V.; Costa, Adriana; Wiedenhoeft, Alex C.
Year: 2015   view abstract, download publication »
Title: Hygrothermal Performance of Mass Timber Construction
Source: Presentation: 2015 Mass Timber Research Workshop, Forest Products Laboratory (FPL), Madison, Wisconsin; November 3-4, 2015
Author(s) Glass, Sam
Year: 2015   view abstract, download publication »
Title: Moisture Performance of Energy-Efficient and Conventional Wood-Frame Wall Assemblies in a Mixed-Humid Climate
Source: Buildings
Author(s) Glass, Samuel; Kochkin, Vladimir; Drumheller, S.; Barta, Lance
Year: 2015   view abstract, download publication »
Title: Moisture transfer through the membrane of a cross-flow energy recovery ventilator: Measurement and simple data-driven modeling
Source: Journal of Building Physics 2015, Volume 38, number 5, 2015; pp. 389-418.
Author(s) Boardman, CR; Glass, Samuel V.
Year: 2015   view abstract, download publication »
Title: Subcellular Electrical Measurements as a Function of Wood Moisture Content
Source: Proceedings of the 58th International Convention of Society of Wood Science and Technology, June 7-12, 2015 – Grand Teton National Park, Jackson, Wyoming, USA. pp. 568-576.
Author(s) Zelinka, Samuel L.; Quintana, José L. Colon; Glass, Samuel V.; Jakes, Joseph E.; Wiedenhoeft, Alex C.
Year: 2015   view abstract, download publication »
Title: Wood Structural Panel & Foam Insulation Systems: Hygrothermal Behavior & Lateral Load Resistance-Experimental Studies
Source: Final Report - USDA Joint Venture Agreement 11-JV-11111136-070 APA -The Engineered Wood Association. 67 p.
Author(s) Yeh, Borjen; Herzog, Benjamin J.; Glass, Samuel
Year: 2015   view abstract, download publication »
Publication Year: 2014
 
Title: Investigation of Historic Equilibrium Moisture Content Data from the Forest Products Laboratory
Source: USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-229, 2014; 37 p.
Author(s) Glass, Samuel V.; Zelinka, Samuel L.; Johnson, Jay A.
Year: 2014   view abstract, download publication »
Title: The effect of moisture content on the corrosion of fasteners embedded in wood subjected to alkaline copper quaternary treatment
Source: Corrosion Science, Volume 83, 2014; pp. 67-74.
Author(s) Zelinka, Samuel L.; Glass, Samuel V.; Derome, Dominique
Year: 2014   view abstract, download publication »
Publication Year: 2013
 
Title: Chapter 10: Enclosure--Building enclosure design for cross-laminated timber construction
Source: In: CLT handbook: cross-laminated timber / edited by Erol Karacabeyli, Brad Douglas. -- U. S. ed. (Special publication, ISSN 1925-0495; SP-529E); 2013; 55 p.
Author(s) Glass, Samuel V.; Wang, Jieying; Easley, Steve; Finch, Graham
Year: 2013   view abstract, download publication »
Title: Hygrothermal Anaylsis of Wood-Frame Wall Assemblies in a Mixed-Humid Climate
Source: Forest Products Laboratory, Research Paper, FPL-RP-675, 2013; 27 p.
Author(s) Glass, Samuel V.
Year: 2013   view abstract, download publication »
Title: Hygrothermal Simulation: A Tool for Building Envelope Design Analysis
Source: Wood Design Focus, Volume 23, Number 3; Fall Issue 2013; pp 18-25.
Author(s) Glass, Samuel V.; TenWolde, Anton; Zelinka, Samuel L.
Year: 2013   view abstract, download publication »
Title: Investigating Wind-Driven Rain Intrusion in Walls with the CARWASh
Source: Published by ASHRE 2013, Thermal Performance of the Exterior Envelopes of Whole Buildings XII International Conference; 2013; 11 p.
Author(s) Boardman, C.R.; Glass, Samuel V.
Year: 2013   view abstract, download publication »
Title: Mechanism of Transport Through Wood Cell Wall Polymers
Source: JOURNAL OF FOREST PRODUCTS & INDUSTRIES, Volume 2, Number 6, 2013; pp. 10-13.
Author(s) Jakes, Joseph E.; Plaza, Nayomi; Stone, Donald S.; Hunt, Christopher G.; Glass, Samuel V.; Zelinka, Samuel L.
Year: 2013   view abstract, download publication »
Title: Moisture in Crawl Spaces
Source: Wood Design Focus, Volume 23, Number 3, fall issue 2013; pp. 11-17.
Author(s) TenWolde, Anton; Glass, Samuel V.
Year: 2013   view abstract, download publication »
Publication Year: 2012
 
Title: Build Green: Wood Can Last for Centuries
Source: Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-215, 2012: 27 p.
Author(s) Clausen, Carol A.; Glass, Samuel V.
Year: 2012   view abstract, download publication »
Title: Examination of water phase transitions in Loblolly pine and cell wall components by differential scanning calorimetry
Source: Thermochimica Acta, 533 (2012) 39-45. 10.1016/j.tca.2012.01.015
Author(s) Zelinka, Samuel L.; Lambrecht, Michael J.; Glass, Samuel V.; Wiedenhoeft, Alex C.; Yelle, Daniel J.
Year: 2012   view abstract, download publication »
Publication Year: 2011
 
Title: Combining hygrothermal and corrosion models to predict corrosion of metal fasteners embedded in wood
Source: Building and Environment, 46 (2011) 2060-2068. doi:10.1016/j.buildenv.2011.04.017
Author(s) Zelinka,Samuel L.; Derome, Dominique; Glass, Samuel V.
Year: 2011   view abstract, download publication »
Title: Insulating raised Floors in Hot, Humid Climates
Source: LSU AgCenter Pub. 3187. Baton Rouge: Louisiana State University Agricultural Center. 2011
Author(s) Glass, Samuel V.; Carll, Charles G.; Reichel, Claudette Hanks; Shupe, Todd F.; Wu, Qinglin; Curole, Jay P.; Voitier, Matthew D.
Year: 2011   view abstract, download publication »
Title: Moisture Meter Calibrations for Untreated and ACQ-Treated Southern Yellow Pine Lumber and Plywood
Source: Journal of Testing and Evaluation, Vol. 40, No. 1 pp. 1-10; 2011 Paper IDJTE103895
Author(s) Boardman, C.R.; Glass, Samuel V.; Carll, Charles G.
Year: 2011   view abstract, download publication »
Publication Year: 2010
 
Title: .Wood Handbook, Wood as an Engineering Material (All Chapters)
Source: Forest Products Laboratory. Wood handbook - Wood as an engineering material. General Technical Report FPL-GTR-190. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 508 p. 2010
Author(s) Bergman, Richard; Cai, Zhiyong; Carll, Charlie G.; Clausen, Carol A.; Dietenberger, Mark A.; Falk, Robert H.; Frihart, Charles R.; Glass, Samuel V.; Hunt, Christopher G.; Ibach, Rebecca E.; Kretschmann, David E.; Rammer, Douglas R.; Ross, Robert J.; Star
Year: 2010   view abstract, download publication »
Title: A laboratory facility for research on wind-driven rain intrusion in building envelope assemblies
Source: 2009 Wood and Fiber Product Seminar: VTT and USDA Joint Activity, September 22-23, 2009. Edited by Ali Harlin & Minna Vikman. (VTT Symposium 263) Helsinki, Finland : VTT, c2010. 176, A3 p. ISBN 978-951-38-7589-3.
Author(s) Glass, Samuel V.
Year: 2010   view abstract, download publication »
Title: Chamber for Analytic Research on Wall Assemblies Chamber for Analytic Research on Wall Assemblies Exposed to Simulated Weather
Source: Forest Products Laboratory Factsheet 0016. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory; 2010. 2 p.
Author(s) Glass, Samuel V.
Year: 2010   view abstract, download publication »
Title: Estimating Foundation Water Vapor Release Using a Simple Moisture Balance and AIM-2: Case Study of a ContemporaryWood-Frame House
Source: In: Thermal Performance of the Exterior Envelopes of Whole Buildings XI International Conference,
Author(s) Boardman, C.R.; Glass, Samuel V.; Carll, Charles G.
Year: 2010   view abstract, download publication »
Title: From Laboratory Corrosion Tests to a Corrosion Lifetime for Wood Fasteners: Progress and Challenges
Source: In: Proceedings of the International Convention of Society of Wood Science and Technology and United Nations Economic Commission for Europe - Timber Committee October 11-14, 2010, Geneva, Switzerland; 2010
Author(s) Zelinka, Samuel L.; Derome, Dominique; Glass, Savuel V.
Year: 2010   view abstract, download publication »
Title: Moisture Performance of Insulated Raised, Wood-Frame Floors: A Study of Twelve Houses in Southern Louisiana
Source: In: Thermal Performance of the Exterior Envelopes of Whole Buildings XI International Conference,
Author(s) Glass, Samuel V.; Carll, Charles G.; Curole, Jay P.; Voitier, Matthew D.
Year: 2010   view abstract, download publication »
Title: Water Vapor Sorption Isotherms for Southern Pine Treated with Several Waterborne Preservatives
Source: ASTM Journal of Testing and Evaluation 38(4):521-525; 2010
Author(s) Zelinka, Samuel L.; Glass, Samuel V.
Year: 2010   view abstract, download publication »
Title: Wood Handbook, Chapter 04: Moisture Relations and Physical Properties of Wood
Source: General Technical Report FPL-GTR-190. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 4-1 - 4-19. Chapter 4.
Author(s) Glass, Samuel V.; Zelinka, Samuel L.;
Year: 2010   view abstract, download publication »
Publication Year: 2009
 
Title: Development of Moisture Management Instructional Videos
Source: FPL RIP-4716-006
Author(s) Glass, Samuel; Peavey, John;
Year: 2009   view abstract, download publication »
Title: Moisture Meter Calibration for Untreated and ACQ-Treated Southern Yellow Pine Plywood
Source: USDA Forest Service, Forest Products Laboratory, FPL-RN-0312, March 2009
Author(s) Samuel V. Glass; Charles G. Carll
Year: 2009   view abstract, download publication »
Title: Occurrence of Mold in a Two-Story Wood-Frame House Operated at Design Indoor Humidity Levels
Source: United States Department of Agriculture, Forest Service, Forest Products Laboratory, FPL-GTR-186, October 2009
Author(s) Carol Clausen; Jessie Glaeser; Samuel Glass; Charles Carll
Year: 2009   view abstract, download publication »
Title: Review of Moisture Balance Models for Residential Indoor Humidity
Source: Citation: Glass, S.V.; TenWolde, A. Review of moisture balance models for residential indoor humidity. In: Proceedings, 12th Canadian Conference on Building Science and Technology, Vol. 1:231-245; 2009
Author(s) Glass, Samuel V.; Ten Wolde, Anton
Year: 2009   view abstract, download publication »
Publication Year: 2008
 
Title: A percolation model for electrical conduction in wood with implications for wood-water relations
Source: Wood and fiber science. Vol. 40, no. 4 (Oct. 2008): Pages 544-552.
Author(s) Zelinka, Samuel L.; Glass, Samuel V.; Stone, Donald S.
Year: 2008   view abstract, download publication »
Publication Year: 2007
 
Title: Measurements of moisture transport in wood-based materials under isothermal and nonisothermal conditions
Source: 30 Years of Research : Proceedings, Thermal Performance of the Exterior Envelopes of Whole Buildings X : U.S. Department of Energy, Oak Ridge National Laboratory : Buildings X Conference, Dec. 2-7, 2007. Atlanta, Ga. : American Society for Heating, Refri
Author(s) Glass, Samuel V.
Year: 2007   view abstract, download publication »
Title: Review of in-service moisture and temperature conditions in wood-frame buildings
Source: General Technical Report FPL-GTR-174. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 53 pages.
Author(s) Glass, Samuel V.; TenWolde, Anton
Year: 2007   view abstract, download publication »
 
Publication Year: 2020
Wetting system in a wall
cavity, used to investigate wall drying.
Highlight ID: 1663
Improving the Tools and Practice for Designing Moisture-Safe Wood Buildings

FPL researchers predict the future! Will this new wood structure be safe and durable in the climate for which it is designed? ...

The relationship between mass loss and moisture content at end of tests, each
horizontal was calculated using different methologies. The top row represents the traditional approach (mass loss), the
second row represents mass loss corrected for fungal growth, and the bottom row represents mass loss corrected for
moisture production due to fungal metabolism. This figure highlights the difficulties in separating interacting effects
in studying acetylated wood.
Highlight ID: 1673
Investigating the Role of Moisture in Durability of Acetylated Wood

FPL researchers join international effort to investigate fungal decay resistance of acetylated wood ...

 
Publication Year: 2019
Schematic representation of moisture transport and gradients during the process of water vapor absorption. USDA Forest Service.
Highlight ID: 1323
Development of New Kinetics Models for Water Vapor Sorption in Wood

Wood is constantly exchanging water with its environment and these exchanges control nearly all of wood's amazing properties. Research has recently shown that this process is still not understood and old models that were thought to explain these proc ...

Researchers built a test hut with a variety of different exterior insulations and interior vapor retarders in order to test some common cases in the cold climate of Wisconsin. USDA Forest Service
Highlight ID: 1328
Keeping Wood-Frame Housing Safe and Warm

Is it okay to add exterior insulation (covering the wood sheathing) in order to make your home even more energy-efficient? FPL researchers investigate under what conditions this is safe. ...

Building under construction featuring glue-laminated timber columns and beams and cross-laminated timber floors. Colorado School of Mines
Highlight ID: 1330
Monitoring Moisture Levels in Mass Timber Buildings

Detailed measurements on moisture levels in mass timber buildings in the United States are scarce. Researchers are working with Colorado School of Mines to monitor conditions in mass timber buildings in three different U.S. climates. ...

 
Publication Year: 2018
Automated sorption balance. USDA Forest Service
Highlight ID: 1313
Improving the Accuracy of Automated Instruments for Moisture in Wood

Automated instruments are increasingly used for measuring the equilibrium moisture content of wood. Research finds that common methods have much larger errors than claimed in the literature, so researchers developed a method to improve accuracy. ...

Cover of ASHRAE Standard 160-2016
Highlight ID: 1312
Updating a Building Design Standard with Improved Criteria for Preventing Mold Growth

A consensus standard for building design that addresses moisture control analysis was recently revised to improve the criteria for preventing mold growth. ...

 
Publication Year: 2017
Dynamic vapor sorption instrument.
Highlight ID: 1292
Improving experimental techniques that probe wood-moisture interactions

Prior methods using dynamic vapor sorption instruments mischaracterized the equilibrium moisture content of wood. Equilibrium is reached after much longer times than previously claimed. This project provides a basis for methods that improve accuracy ...

Phase diagram describing the states of water in wood.
Highlight ID: 1282
Scientists study how water changes wood

Water causes a host of wood damage mechanisms such as mold, decay, fastener corrosion, and splitting. This research elucidates how water changes wood and leads to these wood damage mechanisms. ...

 
Publication Year: 2015
Exterior walls of test huts viewed from the southeast. Lance Barta, Home Innovation Research Labs
Highlight ID: 617
Managing Moisture in Energy-efficient Wall Systems

Moisture durability is critical for design and construction of energy-efficient buildings. Field measurements of moisture characteristics for highly insulated walls in mixed-humid climates are lacking. Researchers from the Forest Service's Forest Pro ...

 
Publication Year: 2014
Computer-based simulation tools allow designers to gauge the risk of moisture problems in building design. Tivoli Gough, USDA Forest Service
Highlight ID: 581
Possibilities and Pitfalls of Computer Simulation for Building Moisture Analysis

Moisture problems are much less expensive to correct in the building design phase than after the building is constructed. Computer-based simulation tools allow designers to gauge the risk of moisture problems. Although simulation can be useful as a d ...

 
Publication Year: 2013
Installation of a cross-laminated timber panel for Promega building in Fitchburg, Wisconsin. Steve Schmieding, USDA Forest Service
Highlight ID: 439
Wood Construction Goes Beyond Its Traditional Roots

As interest in sustainable building options continues to grow. Wood construction is going beyond its traditional roots in housing and expanding into mid-rise, high-rise, and non-residential applications. To support this trend, a new U.S. guide for th ...

 
Publication Year: 2011
Homes with raised floors in New Orleans, Louisiana. Samuel V. Glass, Forest Service
Highlight ID: 286
Moisture Control in Crawl Spaces in Louisiana

Builders and homeowners in the Gulf Region often ask how to insulate a crawl space to avoid moisture problems. The Forest Products Laboratory (FPL), in cooperation with Louisiana State University Agricultural Center, monitored conditions in a dozen h ...

 
Publication Year: 2010
Schematic of the innovative impedance spectroscopy experiments performed at the US Forest Service Forest Products Laboratory that showed electrical conduction in wood is governed by percolation theory. Forest Service
Highlight ID: 154
A percolation model for water and electrical conduction in wood with implications for durability

Recently, researchers at the Forest Products Laboratory and University of Wisconsin have developed a new model of electrical conduction in wood that provides a good fit to experimental data, offers insight into the mechanism of conduction, and integr ...


Highlight ID: 170
Centennial Edition, Wood Handbook—Wood as an Engineering Material

The Wood Handbook—Wood as an Engineering Material serves as a primary reference document for a wide variety of users-from the general public through architects and design engineers who use wood in highly engineered structures. ...

Physical phenomena described by mathematical models for indoor humidity in homes. Forest Service
Highlight ID: 153
Modeling indoor humidity in homes

Indoor humidity levels in a home influence not only occupant comfort and indoor air quality but also the durability of the building, especially in cold climates. Researchers at the Forest Products Laboratory undertook a critical assessment of the lit ...

TitleDate Posted
Paper Poised to Fill New Gaps as Insulation:

Buildings account for 40% of energy usage in the United States. In a world that stresses increased levels of responsible energy use, ensuring that new and existing construction is as efficient as possible will be vital to meeting our nation's sustainability goals. Wood has long been the material of ...

01-21-2016

Radon is the second leading cause of lung cancer.January is National Radon Action Month:

The hustle and bustle of the holiday season is over and here in Wisconsin, the weather is cold. Our doors and windows are closed, and that’s one of the first steps in getting good results from a radon test...

01-21-2015

Vctorian-houseWhat Can Be Done to Promote Long Service Life from Wood?

Build Green: Wood Can Last for Centuries provides many helpful tips for the homeowners...

07-14-2014

wood-fenceTips for Protecting Other Wood Structures

According to Build Green: Wood Can Last for Centuries, the same principles of decay that are applicable to buildings also apply to wooden decks, fences, boardwalks, pergolas, gazebos, planters, and playground structures...

07-10-2014

Paint-sealDoes Painting Protect from Wood Decay?

Carol Clausen and Samuel Glass tell us about another easy and inexpensive trick for preserving your building projects in Build Green: Your Wood Can Last for Centuries. Coatings that form a moisture-impervious film are effective in preventing decay if the seal where two pieces of wood are joined is k...

07-08-2014

dry-rotKeeping Wood Dry Isn't Always Enough:

Build Green: Wood Can Last for Centuries by Carol Clausen and Samuel Glass tells us that most wood-decay problems only occur when decay fungi grow in wet wood. But one kind of fungus is uniquely capable of transporting its own water from a source of moisture (usually soil) into wood that is typical...

07-07-2014

floor replacement fig 16Condensed Moisture-Another Source of Wood Decay

Build Green: Wood Can Last for Decades warns the homeowner of yet another danger: moisture that can condense, accumulate in wood, and lead to decay in walls, attics, and crawl spaces.The causes of this condensation are a source of moisture, a way for moisture to be transported into wood, and a lack ...

06-06-2014

EasleyWood Decay from Water Flowing off the Roof

In Build Green: Wood Can Last for Centuries, Carol Clausen and Sam Glass write about yet another way that moisture decays wood. Many decay problems are caused by roof construction that does not allow rain to move off the roof and away from the house. In some houses, water flow over the roof is inter...

04-25-2014

houghtonRain Seepage--Another Source of Wood Decay

Build Green: Wood Can Last for Centuries by Carol Clausen and Sam Glass tells about how rain seepage can cause wood decay. Decay frequently occurs in joints, where boards or beams are joined together, while the rest of the structure remains sound. One reason is that water gets trapped in the joints....

04-18-2014

Rain-mapInvestigating Historic Wood Moisture Data

Wood and water have a delicate relationship. For over a century, the Forest Products Laboratory (FPL) has provided data on how wood products and moisture interact under various conditions. This includes equilibrium moisture content (EMC) values of wood for given temperature and relative humidity con...

04-16-2014

Rain-mapFrequent Rains:

In Build Green: Wood Can Last for Centuries, Carol Clausen and Sam Glass remind readers that moisture causes wood to decay, and another source of moisture that the homeowner must guard against is frequent rains...

03-26-2014

CLT offers outstanding structural, thermal, and acoustic performance.Opportunity Knocks…on Wood

Research at FPL often works toward moving new or improved wood products into mainstream use. Cross-laminated timber (CLT) is one such product. CLT is a solid panel made of bonded layers of lumber intended for roof, floor, or wall applications. It is a highly “green” material made from an abund...

06-27-2013

Supervisory Microbiologist Carol Clausen briefs Secretary Vilsack on FPL’s Moisture Test Facility.Protecting Wood Buildings from Moisture Damage

Protecting wood against moisture damage is key to long-lasting durability for wood structures. In "Build Green: Wood can last for Centuries," FPL wood-protection experts Carol Clausen and Samuel Glass explain why wood decays and how homeowners can best protect against moisture-related damage...

06-03-2013