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Examples
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In that contest spray in foam ties with Blown In Blanket fiberglass, with an R-Value of 4.0 per one inch of thickness and fiberglass batt has a 3.4 value.
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The way you measure how effective insulation is in resisting heat flow is the R-Value.
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To answer your question about the R-Value of shipping containers.
SG Blocks Container House Debuts at West Coast Green | Inhabitat 2008
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Simple answer is that Shipping containers use a ceramic spray on application called SuperTherm, which with one coat used on the interior and exterior has the equivelent R-Value of 28.5 compared to 6 inches of Fiberglass with R-19.
SG Blocks Container House Debuts at West Coast Green | Inhabitat 2008
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Foam companies say the R-Value doesn't take into account how well the product stops air flow -- a big issue if you think about what it feels like to wear a wool sweater instead of a ski jacket at the top of a mountain.
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However, the mass-enhanced R-Value is only significant when the outdoor temperatures cycle above and below indoor temperatures within a 24-hour period.
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Heck, most efficiency ratings SEER, R-Value, etc are so abstract that they represent an ordinal rating system to all but the most informed purchasers.
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Insultex® House-Wrap will be able to offer a house wrap with an R-Value, at a mere
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The R-Value testing, conducted by BRC Laboratory, resulted in an R-Value approaching 3.
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To achieve this high level of energy efficiency, Epoch utilized its High Performance wall system, combining wood and rigid foam strapping with factory installed Icynene spray foam insulation to increase the R-Value, reduce air movement and drastically reduces thermal bridging.
PR.com Press Releases Epoch Homes 2010
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