Tag Archives: Vented attics

Failures: Beware of condensation in the attic

Prior to the adoption of the 2015 International Building Code (IBC), vents were required in the roof assembly to allow the “attic” space—between the underside of the roof deck and the top of the ceiling below—to vent to the exterior. However, the volume of air movement provided by these vents is rarely sufficient to mitigate moisture problems.

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To Vent or Not to Vent: Q&A

Designers have long used cross-ventilation to minimize the potential for moisture accumulation and condensation in attics and crawl spaces. However, unvented attics have become popular in both residential and commercial applications, pushed by emerging claims of energy savings and moisture control.

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To Vent or Not to Vent: Tips for insulating vented attics

Designers have long used cross-ventilation to minimize the potential for moisture accumulation and condensation in attics and crawl spaces. However, unvented attics have become popular in both residential and commercial applications, pushed by emerging claims of energy savings and moisture control. While these ‘new-style’ attics can be successfully used in many circumstances, this author believes there are reasons to employ vented assemblies in many situations.

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