R-ValueNovember 21, 2012 By SLSThe R-Value measures the resistance of an item to allow heat to pass through an item. The higher the R Value, the better its insulative quality is.WP Glossary Term UsageSay what… aka the acronym dilemmaU-ValueInterior Storm Window: One Option & a How ToFAQ: Why are my windows always so drafty during the winter?
