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Insulative Values for Straw Bale Construction

Insulative Values for Straw Bale Construction. Emily Hartz and Michael McDonald. Variables Affecting Straw Bale Efficiency. Moisture Large air gaps Installation Thickness Type of straw Interior walls Roof efficiency Straw orientation. Graphical Comparison of R-Values. Conclusions.

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Insulative Values for Straw Bale Construction

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  1. Insulative Values for Straw BaleConstruction Emily Hartz and Michael McDonald

  2. Variables Affecting Straw Bale Efficiency • Moisture • Large air gaps • Installation • Thickness • Type of straw • Interior walls • Roof efficiency • Straw orientation

  3. Graphical Comparison of R-Values

  4. Conclusions • Ultimately it is difficult to compare R-values in straw bale construction because of the many variables affecting their efficiency. R-values vary from R 3.0 per inch to R 0.94 per inch depending on construction and the method of R-value measurement. • R-value has also been known to decrease with time as the material degrades.

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