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Hygrothermal Performance Of A Hygroscopic And Permeable Wall Assembly: Impact Of A Vented Wall Cavity, Diane Bastien, Martin Winther-Gaasvig
Hygrothermal Performance Of A Hygroscopic And Permeable Wall Assembly: Impact Of A Vented Wall Cavity, Diane Bastien, Martin Winther-Gaasvig
International Building Physics Conference 2018
Building envelopes that are hygroscopic and permeable to water vapour can contribute to improve the Indoor Environmental Quality (IEQ) in buildings by reducing indoor humidity fluctuations and the concentration of some contaminants like CO2. However, risks of interstitial condensation and mold growth need to be assessed to ensure the durability of such building envelopes. The objective of this paper is to perform hygrothermal simulations of a case study house designed with a Hygroscopic and Permeable Building Envelope (HPBE) and to assess the impact of having a vented cavity compared to a face-sealed wall. This contribution presents hygrothermal simulations of a …
Moisture Monitoring Of Wood-Frame Walls With And Without Exterior Insulation In A Midwestern U.S. Cold Climate, Samuel V. Glass, C. R. Boardman, Borjen Yeh, Kingston Chow
Moisture Monitoring Of Wood-Frame Walls With And Without Exterior Insulation In A Midwestern U.S. Cold Climate, Samuel V. Glass, C. R. Boardman, Borjen Yeh, Kingston Chow
International Building Physics Conference 2018
Continuous exterior insulation is becoming more common in North American above-grade walls in both retrofit applications and new construction, as a means to improve the thermal performance of wall assemblies. Although moisture performance of wood-frame wall assemblies has been studied extensively, the drying capability of wall assemblies with exterior insulation and an interior vapor retarder in cold climates is not well characterized. This study monitored the hygrothermal performance of wall assemblies with and without exterior insulation under high and low interior humidity conditions and with intentional wetting of the wood structural panel sheathing. Moisture content and temperature of standard 38 …