What is R-Value?
R stands for resistance to heat flow. The higher the R-Value, the greater the insulating power and resistance to heat flow.
Depending on where you live and what area of your home you are insulating, different R-Values are recommended. For example, a colder climate requires higher R-Values than a milder, more temperate one. In certain applications, R-Values may be added together for increased thermal resistance. For information on your region and home, see What R-Value Do I Need? in the FAQ section.