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I’m looking for whole-wall R-values and thermal bridging information for Faswall/Durisol block to compare against a SIPs wall.

Claire Anderson | Posted in Green Products and Materials on

I’m trying to make a decision about wall systems and am trying to determine which is the better system for my climate (southern Oregon).

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  1. GBA Editor
    Martin Holladay | | #1

    Claire,
    As far as I know, the Oak Ridge National Lab has not tested any Durisol walls for whole-wall R-value. The manufacturer has used a computer modeling program to estimate the clear-wall R-value of a Durisol Wall. See:
    http://www.durisolbuild.com/Webdocs/Durisolthermalperformance.pdf

    The R-value of a Durisol wall will depend on whether insulation inserts are used before the concrete is poured. The Durisol WF30 wall form has a clear-wall R-value of R-9.1. If mineral wool inserts are included, the R-value increases to R-13.8 (with a 1.5-inch insulation insert) up to a maximum of R-20.6 (with a 3 1/2-in. insulation insert). As far as I can determine, however, these estimated R-values have not been verified by an independent third-party laboratory.

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