Review and Assessment of the Health and Productivity Benefits of Green Schools An Interim Report (2006) / Chapter Skim
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2 Building Envelope, Moisture Management, and Health
2 Building Envelope, Moisture Management, and Health
Pages 20-25
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From page 20... ...
The committee believes that the design, construction, and maintenance of the building envelope are critical to green schools and therefore should have a more prominent place in any set of green school guidelines, for the reasons outlined below. BUILDING ENVELOPE AND MOISTURE MANAGEMENT It is popularly thought that green buildings are those buildings that are constructed using specific materials, systems, and technologies.
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From page 21... ...
Vapor diffusion is a relatively weak force but also requires careful detailing and execution of building assemblies. Excellent resources for proper moisture control design include The Moisture Control Handbook, Principles and Practices for Residential and Small Commercial Buildings by Joseph Lstiburek and John Carmody (1994)
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From page 22... ...
The report Damp Indoor Spaces and Health considered separately the common respiratory symptoms (wheeze, cough, shortness of breath) and the diagnosis of asthma (usually based on reported physician diagnosis, reversible obstruction measured by lung function tests, or use of appropriate medication by the respondent)
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From page 23... ...
First, many people with asthma demonstrate IgE-mediated sensitization to mold, so the possibility exists that symptoms are related to specific immune mechanisms. Mold produces a number of materials such as peptidoglycans and polysaccharides that induce inflammation through the innate immune pathways; other materials such as volatile organic compounds3 and toxins may have direct effects because asthmatic airways have a characteristic hyperresponsiveness and are excessively responsive to exposures to irritants.
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From page 24... ...
· Lower respiratory illness in otherwise healthy children Sufficient Evidence of an Association Between Mold or Other Agents and Respiratory Health · Asthma symptoms in sensitized persons · Cough · Wheeze · Upper respiratory (nose and throat) tract symptoms · Hypersensitivity pneumonitis in susceptible individuals Limited or Suggestive Evidence of an Association · Lower respiratory illness in otherwise healthy children SOURCE: IOM, 2004.
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From page 25... ...
· Guidelines for green schools typically do not adequately address the design detailing, construction, and long-term maintenance of building envelopes to ensure that allergen sources are controlled, moisture is controlled, and a building is kept dry over the long term. · Well-designed, constructed, and maintained building envelopes are critical to the control and prevention of the excessive moisture and molds that have been associated with adverse health effects in children and adults.
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