Banner for LabNotes
From Lab Notes
Contact Information
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592


You are here: FPL Home  / Information Products & Services  / Publications

Requested Product

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

Publication Year: 2009  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4723-1

Abstract: Moisture balance models for indoor humidity have been developed and used by researchers and practitioners to generate realistic interior humidity conditions for hygrothermal analysis of building envelopes and to analyze humidity levels and moisture production rates. This paper reviews moisture balance models for residential indoor humidity in cold-climates. We provide background on various simplified approaches to handling water vapor exchange (buffering) with hygroscopic materials in contact with indoor air. We discuss the application of models in actual occupied buildings, comparing modeled indoor humidity values with measured values and describing how models have been used to estimate moisture production rates. We show that there is rather large variability in moisture production rates and argue that the combined uncertainty in moisture production and air exchange rates warrants the use of simple models for moisture buffering. Finally, we evaluate the time scale for which moisture buffering is significant, concluding that the data currently support only short-term effects.

Keywords: Dwellings; heating; ventilation; wooden buildings; moisture; buildings; dampness in buildings; humidity; wooden-frame houses; environmental engineering; testing; wood moisture; weathering; airtightness; mathematical models; water vapor; moisture content; moisture control; moisture content of wood in service; durability; review article

File size: 206 kb(s)

Date posted: 06/26/2009

This publication is also viewable on Treesearch:  view
RITS Product ID: 30793
Current FPL Scientist associated with this product
Glass, Samuel V.
Research Physical Scientist

Additional items that might interest you
View the video celebrating FPL's 100 years of public service in 2010, from the producers of the Greatest Good....view

Research Highlights from FPL....view

Termite Eradication: A search for the Holy Grail.... view

Moisture Management in Residential Construction Series videos...view

Wood Floor Systems in Residential Construction Series videos....view
- FPL's Mission and Strategic Plan -

FPL's mission is to identify and conduct innovative wood and fiber utilization research that contributes to conservation and productivity of the forest resource, thereby sustaining forests, the economy, and quality of life. ... ..more »

- FPL Research Emphasis Areas -
Advanced Composites

As an integral part of the FPL mission, we improve the long-term sustainability of our Nation's forests by creating valuable composite products from biobased materials ... ..more »

Advanced Structures

The FPL has been in the forefront of wood-frame housing research since 1910 and has long been recognized as a world leader in such housing-related areas as engineered wood ... ..more »

Forest Biorefinery

We all know the compelling reasons that the United States needs to reduce its dependence on fossil fuels. Historically, the greatest increases in energy demand have been for transportation fuels ... ..more »


A leader in wood products research for over a century, the FPL is positioning itself to become the lead Federal research facility for the application of nanotechnology in forest products ... more »

Woody Biomass Utilization

Forests in the United States contain a substantial amount of small-diameter, overstocked, and underutilized material.FPL research projects are exploring the potential of the small-diameter ... ..more »