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Daily Archives: May 8, 2014

Product R-value vs Total R-value

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When you’re looking at the performance of different insulation products, the number that matters is Total R-value, sometimes called System R-value. In theory, it tells you how well a particular product will work once it becomes part of the structure of your building. R-value concepts At this point, a quick summary of R-value basics may be helpful. R-value is a ... Read More »