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InSoFast, LLC <br /> Finally, An Easy Way to Finish Concrete Surfaces <br /> L <br /> To: City of Portland <br /> RE: R-15 Code Exception for a 2x4 Wall Assembly <br /> Date: Nov. 9, 2009 <br /> As you will see in the charts below, InSoFast® with its total wall assembly R-Value of 11.08 will <br /> outperform the currently accepted 2x4 framed wall using R-13 fiberglass insulation. Using the "Typically <br /> Installed" performance of fiberglass, InSoFast performs 8.4% better than the R-10.22 of the traditional <br /> wall assembly. <br /> According to the Department of Energy's Building America Report an un-insulated basement can <br /> account for up to one third of the heat loss of a residential structure. The DOE report states that by <br /> installing R-5 insulation (Total Assembly R-Value 7.13) on the interior of a basement wall,the heat loss <br /> will be cut by 70%. Based on this report, installing InSoFast with an R-Value of 8.5 (Total Assembly R- <br /> Value 11.08)the heat loss will be reduced by 81%. <br /> Example: Annual Heating Bill of$1,000 <br /> An Un-insulated Basement accounts for up to 1/3 of Heat Cost=$333 <br /> insulation Type Savings% Heat Dollars Saved <br /> Un-insulated Basement Heat 0 <br /> Loss of 70% $0.00 <br /> R-5 Wall System 70% $231.10 <br /> 2x4 with R-13 Fiberglass 79% $263.07 <br /> InSoFast Wall System 81% $269.73 <br /> •C <br /> • <br /> InSoFast, LLC -- 7255 Commerce Ci. E. -- Fridley, MN 55432 <br />