Building Tightness Guidelines: When Is a House Too Tight?
After more than a decade of training and field experience, low-income weatherization crews are substantially increasing the air tightness of homes. [continue reading]
Moisture and Mobile Home Weatherization
Most newer manufactured homes in the Pacific Northwest, as well as many older mobile homes, have a vapor retarder on the inside of the wall cavity--typically right behind the gypsum board. However, many older mobile homes, especially those built before the 1980s, were manufactured with a vapor retarder on the outside of the wall cavity--generally right behind the metal (or sometimes wood) siding. [continue reading]
Carbon Monoxide from Ovens: A Serious IAQ Problem
Traditionally, few people have considered gas ovens to be a major source of carbon monoxide (CO), even though all their exhaust products are often vented directly into the indoor air of a residence. Yet unvented space heaters with a similar output of combustion gases have been banned in many states because of indoor air quality (IAQ) dangers inherent in their use. [continue reading]
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