If you are having a home built or improving on your home, you have probably heard the term "R Value" - but what does it actually mean and how does it affect the comfort of your home? Take a look at this explanation of R Value, how to calculate it, and what the optimal R Value is for a comfortable, energy efficient home. Online Quote Calculator: http://www.affordablecomfort.biz/Calculator.aspx Affordable Comfort of Missouri and Illinois http://www.affordablecomfort.biz/