What is R-value?
R-value is the measure of the insulation material’s resistance to heat or thermal transfer. There are many variables that affect the R-value, such as moisture, temperature, and improper installation. We encourage you to read the R-value Myth article, which better explains how R-value relates to insulation.
Our closed-cell foam product has an effective R-Value of 7.0 per inch. Spray foam is the only insulation product that offers a true R-value because it is the only product that creates an air seal. Don't get caught up in the Myth of R-values. R-value means nothing without a true thermal air seal. Only spray-foam achieves this.