Exceed Prescriptive R-Value Requirements With Continuous Insulation

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Dow Building Solutions published this 4-page white paper, in July 2009, detailing how continuous insulation (ci) can be used to achieve specified R-values and optimum moisture control in steel stud walls. It also explains that continuous insulation moderates temperatures inside the wall cavity, reducing the potential for convective heat loss—and increasing the insulation value of the wall system. According to the paper, by simply varying continuous insulation thickness to maintain prescribed U-factors, it is possible to meet both ASHRAE 90.1-2007 and 2009 IECC Commercial Building energy standards for steel-framed walls for all U.S. climate zones with continuous insulation alone.

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