31 Mar '17, 12pm

What’s the R-value of Cedar Shingle Siding? https://t.co/iv07PDVCdi

What’s the R-value of Cedar Shingle Siding? https://t.co/iv07PDVCdi

I first heard about the R-value claims on the Dow's web site from Michael Maines, a GBA GreenBuildingAdvisor.com blogger and certified Passive House A residential building construction standard requiring very low levels of air leakage, very high levels of insulation, and windows with a very low U-factor. Developed in the early 1990s by Bo Adamson and Wolfgang Feist, the standard is now promoted by the Passivhaus Institut in Darmstadt, Germany. To meet the standard, a home must have an infiltration rate no greater than 0.60 AC/H @ 50 pascals, a maximum annual heating energy use of 15 kWh per square meter (4,755 Btu per square foot), a maximum annual cooling energy use of 15 kWh per square meter (1.39 kWh per square foot), and maximum source energy use for all purposes of 120 kWh per square meter (11.1 kWh per square foot). The standard recommends, but does not require, a ma...

Full article: http://www.greenbuildingadvisor.com/articles/dept/musings...

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