All About Insulation R-Value

R-value is a measurement of how well building insulation can prevent the flow or transfer of heat into and out of the home. A greater, or higher R-value means greater insulating performance which leads to a better savings on your energy bills. We’re going to expand on this concept and teach you all you need to know about insulation R-values so you can ensure you have proper insulation R-value throughout your home.

What is Insulation R-Value?

An R-value is the numerical value given to represent how well a material resists the transfer of heat. This is important as homeowners are trying to keep heat in or out of the home depending on the season. Insulation ratings are measured in R-value per inch. Typically, a higher R-value means a better energy efficiency – but not in all cases. For instance, spray foam insulation may have a lower R-value per inch of applied thickness, but with it’s superior ari sealing properties, it will out perform nearly all insulation products.

R-Value & Climate Zone

Your home’s insulation needs are dependent on your local building code, and climate. This means that you homes doesn’t necessarily need the highest R-value insulation possible.

The map shows each Climate Zone as designated by the US Department of Energy. You can find your homes zone on the map and use the table provided to determine the minimum R-value you insulation should have.

R-Value Insulation Chart

 Once you know your climate zone, you can use the R-value chart to determine the level of insulation you need to properly insulate your attic and walls – even your floors and crawlspace as well. You should note that each location has a different ideal insulation R-value. For example, your attic will have a different ideal R-value than your walls.

With a better understanding of insulation R-value, you can make sure your home is properly insulated. If you need to improve the insulation in your home, we’d be glad to help and we offer free estimates.