What is R-Value?

The R-Value refers to the resistance to heat flow for insulation. The higher the R-Value, the less heat that enters a home in the summer time and the less heat that escapes the home during the winter time. Generally an R-19 value is accepted new construction for wall insulation in a home and R-30 for ceiling insulation (though Energy Star and other green building options usually have greater R values for wall and ceiling insulation).